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DTSTART;TZID=UTC:20210324T153000
DTEND;TZID=UTC:20210324T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T181307Z
UID:5742-1616599800-1616603400@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Danielle Cox\, Mount Saint Vincent University
DESCRIPTION:The Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-03-24/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210319T160000
DTEND;TZID=America/Halifax:20210319T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20210113T131005Z
UID:5719-1616169600-1616173200@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Marco Merkli (MUN)
DESCRIPTION:The Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-steven-lester-kings-college-london-2-2-2/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210317T153000
DTEND;TZID=UTC:20210317T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T181326Z
UID:5740-1615995000-1615998600@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Peter Danziger\, Ryerson University
DESCRIPTION:The Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-03-17/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210317T103000
DTEND;TZID=America/Halifax:20210317T113000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20210313T181446Z
UID:5753-1615977000-1615980600@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: Ting-Hao Hsu (UNB)
DESCRIPTION:Slow-Fast Systems in Epidemic Models\nDifferential equations involving slow and fast time scales have been adopted in mathematical modelling to capture rapid changes occurred in the epidemic systems. Examples include outbreaks of infectious diseases and autonomous behavioural changes of individuals. I will introduce a new technic in slow-fast systems to analyze relaxation oscillations\, i.e.\, periodic orbits with slow and fast segments\, in such models. The approach is based on extending the so-called entry-exit function to multi-dimensional slow-fast systems using the geometric singular perturbation theory. \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.  All times are given in the Atlantic timezone.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2021-03-17/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210312T160000
DTEND;TZID=America/Halifax:20210312T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20210113T130648Z
UID:5712-1615564800-1615568400@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: François Monard (U. California\, Santa Cruz)
DESCRIPTION:The Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-steven-lester-kings-college-london-2/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210310T153000
DTEND;TZID=UTC:20210310T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T181112Z
UID:5738-1615390200-1615393800@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Nancy Clarke\, Acadia University
DESCRIPTION:The Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-03-10/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210305T160000
DTEND;TZID=America/Halifax:20210305T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20210113T130546Z
UID:5709-1614960000-1614963600@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Steven Lester (King's College London)
DESCRIPTION:The Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-steven-lester-kings-college-london/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210303T153000
DTEND;TZID=UTC:20210303T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T180908Z
UID:5736-1614785400-1614789000@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Jeannette Janssen\, Dalhousie University
DESCRIPTION:The Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-03-03/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210303T103000
DTEND;TZID=America/Halifax:20210303T113000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20210224T014137Z
UID:5751-1614767400-1614771000@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: James Watmough (UNB)
DESCRIPTION:Case importation and community spread: post-pandemic control of the spread of SARS-CoV-2 in low density populations\nIt has been just over one year and 100 million cases since we first heard of a novel coronavirus with pandemic potential. We are now all far too familiar with epidemic curves and would very much like to see the tail of this one. In this talk\, I will review the simple mathematical models for the transition from pandemic to endemic and what they tell us about this tail. \nFor the past year\, Canada has kept case numbers relatively low through a combination of community quarantine and travel restrictions. In theory\, this has implications for how we approach and manage the new normal of endemic SARS-CoV-2. I will focus on what this might mean for Atlantic Canada. \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.  All times are given in the Atlantic timezone.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2021-03-03/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210224T153000
DTEND;TZID=UTC:20210224T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210224T014431Z
UID:5734-1614180600-1614184200@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr. Gary Gordon\, Lafayette College
DESCRIPTION:Permutations of finite subsets of R^2 generated by Euclidean distances\nGiven a finite set of points S = {P1\, P2\, . . . \, Pn} and a vantage point V\, generate an ordering of the points of S by measuring the Euclidean distance from V to each of the points of S\, ordering them from nearest to farthest. As the vantage point moves around the plane\, different orderings will be generated. We are interested in the maximum\, minimum\, and intermediate values achievable for different point-sets S. (Good and Tideman solved the maximum problem in all dimensions in the 1970s.) We also consider a generalization that uses two vantage points\, using the average distance (d(V1\, Pk) + d(V2\, Pk))/2 to the points of S to generate an ordering. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-02-24/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210224T130000
DTEND;TZID=America/Halifax:20210224T140000
DTSTAMP:20260610T164411
CREATED:20200706T160843Z
LAST-MODIFIED:20210212T175656Z
UID:5781-1614171600-1614175200@aarms.math.ca
SUMMARY:Atlantic GR Seminar: Sarah Muth (MUN)
DESCRIPTION:Marginally Outer Trapped (Open) Surfaces in 4+1 Dimensional Schwarzschild\nIn the case of binary black hole mergers\, the surface of most obvious interest\, the Event Horizon\, is often computationally difficult to locate. Instead\, it is useful to turn to quasi-local characterizations of black hole boundaries\, such as Marginally Outer Trapped Surfaces (MOTS)\, which are defined for a single time slice of the spacetime\, and the outer-most of which is the apparent horizon. In this talk\, I will describe ongoing work focused on understanding MOTS in the interior of a five-dimensional Schwarzschild black hole. Similar to the four-dimensional case previously studied\, we find examples of self-intersecting MOTS with an arbitrary number of self-intersections. This provides further support that self-intersecting behavior is rather generic. I will also briefly discuss the next stage of our research\, which involves further examples of these self-intersecting MOTS\, this time in the full Kruskal extension of Schwarzschild. \nThe Atlantic General Relativity 2020 online postdoc/student seminar series is in the tradition of the annual AGR meetings\, providing a forum not only for students and postdocs to present their research and make professional contacts but also to facilitate connections and collaborations between all Atlantic Canadian relativists. The series is student-organized and includes all areas of classical and quantum gravity. Talks will occur on the last Wednesday of every month\, with each session consisting of two 30 minute talks. If you would like to attend\, please email the organizers for connection details. \nNote: all times are Atlantic Time
URL:https://aarms.math.ca/event/atlantic-gr-seminar-2021-02-24/
LOCATION:Zoom seminar
CATEGORIES:Atlantic GR Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210217T103000
DTEND;TZID=America/Halifax:20210217T113000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20210212T194831Z
UID:5749-1613557800-1613561400@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: JC Loredo-Osti (Memorial)
DESCRIPTION:Covid-19 management in Newfoundland and Labrador\nAtlantic Canada and the territories have experienced a qualitatively different COVID-19 epidemic than the other Canadian provinces. The question is\, do these differences suggest different best approaches to public health policy or they are just the consequence of geographic/demographic conditions? When infection prevalence is low\, imported infections are not only a large fraction of all infections\, but a major trigger of outbreaks. This also posses questions about the merits of travel restrictions as well as the escalation of measures in response to outbreaks. On this presentation\, we will discuss some of the ways to quantify these issues in the context of the pandemic in Atlantic Canada\, and in particular in Newfoundland and Labrador. \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.  All times are given in the Atlantic timezone.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2021-02-17/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210210T153000
DTEND;TZID=UTC:20210210T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210212T180031Z
UID:5732-1612971000-1612974600@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Anthony Bonato\, Ryerson University
DESCRIPTION:The localization game played on graph\nGraph searching investigates combinatorial models for the detection or neutralization of an adversary’s activity on a network. One such model is the localization game\, where pursuers use distance probes to capture an invisible evader. We present new results on the localization number of a graph\, which is the minimum number of pursuers needed to capture the evader. We survey what is known and unknown for the localization number\, discuss connections with the chromatic number\, and give bounds on graph families such as hypercubes\, incidence graphs of combinatorial designs\, and Kneser graphs. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-02-10/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210203T103000
DTEND;TZID=America/Halifax:20210203T113000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20210202T025813Z
UID:5747-1612348200-1612351800@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: Sanjeev Seahra (UNB)
DESCRIPTION:COVID-19 modelling in New Brunswick and elsewhere\nWe present a simple differential equation based model of the COVID-19 pandemic that allows for time-evolving social distancing.  We apply the model to the first 80 days of the pandemic in 24 different jurisdictions to quantify the effectiveness of government lockdowns in March 2020.  Using Bayesian methods\, we then estimate model parameters relevant to the current outbreak in New Brunswick. \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.  All times are given in the Atlantic timezone.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2021-02-03/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210129T160000
DTEND;TZID=America/Halifax:20210129T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20201231T203710Z
UID:5687-1611936000-1611939600@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Alan Lindsay (Notre Dame)
DESCRIPTION:The Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-2021-01-29/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210127T153000
DTEND;TZID=UTC:20210127T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T180340Z
UID:5730-1611761400-1611765000@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Jordan Barrett\, PhD Candidate\, McGill University
DESCRIPTION:The Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-01-27/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20210122T160000
DTEND;TZID=America/Halifax:20210122T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20201231T211013Z
UID:5685-1611331200-1611334800@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Allan Greenleaf (Rochester)
DESCRIPTION:The Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-2021-01-22/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210120T153000
DTEND;TZID=UTC:20210120T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T180143Z
UID:5727-1611156600-1611160200@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr. Hugh Thomas\, UQAM
DESCRIPTION:Dynamical algebraic combinatorics and independence sets of graphs\nDynamical algebraic combinatorics is a relatively new (and fun!) topic\, which looks at cyclic group actions on objects from algebraic combinatorics\, inspired by some questions coming from dynamical systems. I will give an introduction to the area\, focusing on an action I have defined with Nathan Williams on the independent sets of a graph (arXiv:1805.00815). We also construct a partial order on the set of independent sets of a graph\, which may be of independent interest. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-01-20/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20210113T153000
DTEND;TZID=UTC:20210113T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20210127T175821Z
UID:5724-1610551800-1610555400@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Stephen Finbow\, Saint Francis Xavier University
DESCRIPTION:The γ-graph of a graph\nFor a graph G = (V\, E)\, the γ-graph of G\, G(γ) = (V (γ)\, E(γ))\, is the reconfiguration graph whose vertex set is the collection of minimum dominating sets\, or γ-sets of G\, and two γ-sets are adjacent in G(γ) if they differ by a single vertex and the two different vertices are adjacent in G. The γ-graph of G was introduced by Fricke et al. in 2011 where they studied properties of γ-graphs\, and raised seven questions. In this seminar we will discuss the study of γ-graphs to date with a focus on the progress of these questions. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2021-01-13/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201216T150000
DTEND;TZID=America/Halifax:20201216T163000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20201207T122128Z
UID:5643-1608130800-1608136200@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: Ali Gharouni (McMaster)
DESCRIPTION:COVID-19 Outbreak Dynamics and Testing-Isolation Efficacy; Insights from a Simple Epidemic Model\nOne of the main challenges in understanding COVID-19 dynamics is to estimate changes in the total level of infection in a population. The daily case count is a highly accessible form of data where observations are driven by two types of processes: (i) epidemic processes and (ii) testing processes. The challenge is then to separate these processes and understand how they interact. We developed a model that incorporates mechanistic processes of epidemic processes and testing. We have used the model to study the potential\neffect of testing strategies on disease dynamics. In future work\, we will develop improved methods for estimating true incidence by using data from negative as well as positive tests. \nIn collaboration with: Fady Abdelmalek and Drs Benjamin M Bolker\, Jonathan Dushoff\, David JD Earn \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.  All times are given in the Atlantic timezone.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2020-12-16/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20201209T153000
DTEND;TZID=UTC:20201209T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20201231T210934Z
UID:5694-1607527800-1607531400@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Erin Meger (Université du Québec à Montréal)
DESCRIPTION:The Iterated Local Model for Social Networks\nComplex networks are said to exhibit four key properties: large scale\, evolving over time\, small world properties\, and power law degree distribution. The Preferential Attachment Model (Barab´asi–Albert\, 1999) and the ACL Preferential Attachment Model (Aiello\, Chung\, Lu\, 2001) for random networks\, evolve over time and rely on the structure of the graph at the previous time step. Further models of complex networks include: the Iterated Local Transitivity Model (Bonato\, Hadi\, Horn\, Pralat\, Wang\, 2011) and the Iterated Local Anti-Transitivity Model (Bonato\, Infeld\, Pokhrel\, Pralat\, 2017). In this talk\, we will define and discuss the Iterated Local Model. This is a generalization of the ILT and ILAT models\, where at each time step edges are added deterministically according to the structure of the graph at the previous time step. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2020-12-09/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201204T160000
DTEND;TZID=America/Halifax:20201204T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20201231T203053Z
UID:5475-1607097600-1607101200@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Peter Hintz (MIT)
DESCRIPTION:Title: Linear stability of slowly rotating Kerr spacetimes\nAbstract: I will describe joint work with Dietrich Häfner and András Vasy in which we study the asymptotic behavior of linearized gravitational perturbations of Schwarzschild or slowly rotating Kerr black hole spacetimes. We show that solutions of the linearized Einstein equation decay at an inverse polynomial rate to a stationary solution (given by an infinitesimal variation of the mass and angular momentum of the black hole)\, plus a pure gauge term. The proof uses a detailed description of the resolvent of an associated wave equation on symmetric 2-tensors near zero energy. \nThe Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-2020-10-16-2-2-2-3/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20201202T153000
DTEND;TZID=UTC:20201202T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20201231T204813Z
UID:5691-1606923000-1606926600@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Melissa Huggan (Ryerson University)
DESCRIPTION:The Cheating Robot and Insider Information\nThroughout this talk\, we explore a deterministic model as an alternative approach to studying simultaneous play combinatorial games. We call this the Cheating Robot model. This model forces both players to move at the same time\, but one player has extra information about where their opponent is going to move and can react accordingly. We discuss some general theory and explore a case study to get some insight into this model. This is joint work with Richard J. Nowakowski. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2020-12-02/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201127T160000
DTEND;TZID=America/Halifax:20201127T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20201123T152316Z
UID:5472-1606492800-1606496400@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Graham Cox (Memorial University)
DESCRIPTION:Title: Nodal deficiency via equipartition energy functionals and the Dirichlet-to-Neumann map\nAbstract: A classic result in differential equations is that the nth eigenfunction\nof a Sturm-Liouville boundary value problem has precisely n-1 zeros.\nCourant’s nodal domain theorem provides a natural generalization of this\nresult to higher dimensions\, but it is generally not sharp. The lack of\nsharpness is measured by the “nodal deficiency” of an eigenfunction.\nDespite over a century of intensive study\, this quantity is still not\nvery well understood. \nThe first explicit formula for the nodal deficiency was obtained in 2012\nby Berkolaiko\, Kuchment and Smilansky\, using an energy functional\ndefined on the space of equipartitions. More recently\, with Jones and\nMarzuola\, I obtained another formula for the nodal deficiency\, in terms\nof Dirichlet-to-Neumann operators defined on the eigenfunction’s nodal\ndomains. While originally derived using symplectic methods\, this result\ncan also be understood using the spectral flow generated by a family of\nboundary conditions imposed on the nodal set. In this talk I will\ndescribe this flow\, and explain how it provides a concrete mechanism by\nwhich low energy eigenfunctions do or do not contribute to the nodal\ndeficiency. I will also describe recent progress relating these two\nformulas for the nodal deficiency\, and hint at some applications to the\ntheory of spectral minimal partitions. \nThis talk represents joint work with Thomas Beck\, Gregory Berkolaiko\,\nIsabel Bors\, Yaiza Canzani\, Grace Conte\, Christopher Jones and Jeremy\nMarzuola. \nThe Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-2020-10-16-2-2-2/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20201125T153000
DTEND;TZID=UTC:20201125T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20201231T162125Z
UID:5664-1606318200-1606321800@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Dr Jared Howell (Memorial University of Newfoundland\, Grenfell Campus)
DESCRIPTION:Gracefully labelling windmills using Skolem-like sequences\nTo gracefully label a graph G\, assign each vertex v ∊ V(G) a distinct label l(v) from {0\,1\,2\,…\,|E(G)|}\, such that {|l(u)-l(v)| : uv ∊ E(G)}={1\,2\,3\,…\,|E(G)|}. In this talk we will examine constructive techniques using Skolem-like sequences to gracefully label windmills of cycles. This includes new constructive techniques for known results as well as new results on windmills with vanes of mixed cycle length. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2020-11-25/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201125T130000
DTEND;TZID=America/Halifax:20201125T140000
DTSTAMP:20260610T164411
CREATED:20200706T160843Z
LAST-MODIFIED:20201108T225205Z
UID:5390-1606309200-1606312800@aarms.math.ca
SUMMARY:Atlantic GR Seminar: Jinzhao Wang  (ETH Zurich) and Saikat Mondal (MUN)
DESCRIPTION:Outer entropy equals Bartnik-Bray inner mass\, and the gravitational ant conjecture\nJinzhao Wang (ETH Zurich) \nEntropy and energy are found to be closely tied on our quest for quantum gravity. We point out an interesting connection between the recently proposed outer entropy\, a coarse-grained entropy defined for a compact spacetime domain motivated by the holographic duality\, and the Bartnik-Bray quasilocal mass long known in the mathematics community. In both scenarios\, one seeks an optimal spacetime fill-in of a given closed\, connected\, spacelike\, codimension-two boundary. We show that for an outer-minimizing mean-convex surface\, the Bartnik-Bray inner mass matches exactly with the irreducible mass corresponding to the outer entropy. The equivalence implies that the area laws derived from the outer entropy are mathematically equivalent as the monotonicity property of the quasilocal mass. It also gives rise to new bounds between entropy and the gravitational energy\, which naturally gives the gravitational counterpart to Wall’s ant conjecture. We also observe that the equality can be achieved in a conformal flow of metrics\, which is structurally similar to the Ceyhan-Faulkner proof of the ant conjecture. We compute the small sphere limit of the outer entropy and it is proportional to the bulk stress tensor as one would expect for a quasilocal mass. \nMarginally outer trapped (open) surfaces in Schwarzschild geometry and extreme mass ratio merger\n Saikat Mondal (MUN) \nBlack holes are one of the common objects in astrophysics. Some are formed from a dying star\, called a stellar black hole. There are also supermassive black holes consisting of mass millions or even billions times that of the sun. Such black holes are thought to lie at the center of almost every galaxy. In this talk we will explore the evolution of horizons of black hole mergers in a special limit called the ” extreme mass ratio” limit. For example\, a supermassive black hole merges with a stellar black hole to become a single black hole. In this limit\, the merging horizons can be studied with the help of simple numerics. We will discuss mainly about marginally outer trapped surfaces (MOTS). Interestingly\, the MOTSs we find in our numerical analysis have an arbitrary number of self-intersections. \nThe Atlantic General Relativity 2020 online postdoc/student seminar series is in the tradition of the annual AGR meetings\, providing a forum not only for students and postdocs to present their research and make professional contacts but also to facilitate connections and collaborations between all Atlantic Canadian relativists. The series is student-organized and includes all areas of classical and quantum gravity. Talks will occur on the last Wednesday of every month\, with each session consisting of two 30 minute talks. If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/atlantic-gr-seminar-2020-11-25/
LOCATION:Zoom seminar
CATEGORIES:Atlantic GR Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20201118T153000
DTEND;TZID=UTC:20201118T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20201108T230211Z
UID:5573-1605713400-1605717000@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar: Kyle MacKeigan (PhD Candidate\, Dalhousie University)
DESCRIPTION:Orthogonal Colourings of Graphs\nTwo colourings of a graph are orthogonal if they have the property that when two vertices receive the same colour in one colouring\, then those vertices receive distinct colours in the other colouring. In this talk\, the importance of perfect orthogonal colourings is demonstrated. Then\, perfect orthogonal colourings of Cayley graphs and tree graphs are constructed. To conclude\, it is shown how the Cartesian\, tensor\, and strong graph product can be used to generate perfect orthogonal colourings. \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2020-11-18/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201118T150000
DTEND;TZID=America/Halifax:20201118T163000
DTSTAMP:20260610T164411
CREATED:20200615T150024Z
LAST-MODIFIED:20201116T134618Z
UID:5578-1605711600-1605717000@aarms.math.ca
SUMMARY:AARMS COVID-19 Seminar: Shannon LeBlanc (Dept of Health NB)
DESCRIPTION:Importation Risk under the Northern Lights\nTo understand the risk that an infectious traveler from other Canadian provinces and territories will enter the Northwest Territories the Government of the Northwest Territories has fitted jurisdictional reported COVID-19 transmission data to a simple SEIR model. Using the most recent epidemiological parameters for transmission we estimate the likelihood that a pre-symptomatic or asymptomatic/unreported COVID-19 case will travel to the NWT at time t. We have mapped territorial travel data collected since May 2020 to identify the points in time that our importation risk was highest. Using the output of the importation risk model we have developed a Markov tree to assist public health decision makers in understanding the risk that these travelers pose to the public based on the testing and quarantine strategies that they choose to apply. \nShannon LeBlanc is currently an Epidemiologist at the New Brunswick Department of Health who has recently worked with the government of the Northwest Territories \nThis is a virtual zoom seminar.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/aarms-covid-19-seminar-2020-11-18/
LOCATION:Zoom seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Halifax:20201106T160000
DTEND;TZID=America/Halifax:20201106T170000
DTSTAMP:20260610T164411
CREATED:20200904T115630Z
LAST-MODIFIED:20201108T225930Z
UID:5470-1604678400-1604682000@aarms.math.ca
SUMMARY:Dalhousie-AARMS AAMP Seminar: Reem Yassawi (Open University\, London)
DESCRIPTION:Title: Some tame or wild Cantor dynamical systems\n Abstract: A topological dynamical system is a pair  where  is a compact metric spaces and  is a group or semigroup acting continuously on . One algebraic invariant of a such a dynamical system is the Ellis semigroup.  The Ellis semigroup  of a topological dynamical system is defined to be the compactification of the action  in the topology of pointwise convergence on the space of all function .  Tameness is a concept whose roots date back to Rosenthal’s  embedding theorem\, which says that if a sequence in  does not have a weakly Cauchy subsequence\, then it must be a sequence on unit vectors in .  Köhler linked the concept of tameness to the Ellis semigroup.  A system is tame if its Ellis semigroup has size at most the continuum.  Non-tame systems are very far from tame\, as they must contain a copy of \, the Stone-Cech compactification of . \nIn this talk\, I will briefly survey the properties of the Ellis semigroup that make it an interesting object to study\, and discuss recent developments concerning tameness.  I will then discuss Toeplitz shifts\, which themselves have been studied extensively in this context and is the subject of some joint work with G. Fuhrmann and J. Kellendonk. \nThe Dalhousie-AARMS Analysis-Applied Math-Physics Seminar takes place on Fridays from 4 – 5 pm Atlantic Time over Zoom.  If you would like to attend\, please email the organizers for connection details.
URL:https://aarms.math.ca/event/dalhousie-aarms-aamp-seminar-2020-10-16-2-2-2-2/
LOCATION:Zoom seminar
CATEGORIES:AAMP Seminar
ORGANIZER;CN="Suresh Eswarathasan":MAILTO:sr766936@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20201104T153000
DTEND;TZID=UTC:20201104T163000
DTSTAMP:20260610T164411
CREATED:20201006T115021Z
LAST-MODIFIED:20201108T225743Z
UID:5569-1604503800-1604507400@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar:  Dr Andrea Burgess (University of New Brunswick\, Saint John)
DESCRIPTION:Equitably colourable cycle decompositions\n A -colouring of a decomposition of a graph  is an assignment of  colours to the vertices of . A colouring is equitable if each colour is represented (as closely as possible) an equal number of times on each block\, i.e. for any two colours  and \, the number of vertices of colour  and  in any given block differ by at most 1. In this talk\, we give an overview of colourings of designs and cycle decompositions\, and present some recent joint results with Francesca Merola on the existence of equitably 2-colourable cycle decompositions of the cocktail party graph. In particular\, we give a complete existence result for equitably 2-colourable -cycle decompositions of  in various cases\, including that  or  (mod );  is a power of 2;  for  a prime power; or . \nThe Atlantic Graph Theory Seminar series will take place every Wednesday from 3:30-4:30 ADT online via zoom. The talks\, provided by researchers\, postdocs and graduate students\, will be on a variety of current topics in graph theory. If you would like to give a talk or attend\, please email one of the organizers (Jason Brown and Danielle Cox).
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-2020-11-04/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
END:VEVENT
END:VCALENDAR