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BEGIN:VEVENT
DTSTART;TZID=UTC:20250205T153000
DTEND;TZID=UTC:20250205T163000
DTSTAMP:20260611T102749
CREATED:20250130T120621Z
LAST-MODIFIED:20250130T120621Z
UID:7934-1738769400-1738773000@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar
DESCRIPTION:Kemeny’s constant for Markov chains and random walks on graphs\nSpeaker: Jane Breen\, Ontario Tech University\n\nKemeny’s constant is an interesting and useful quantifier of how well-connected the states of a Markov chain are. Though it was first introduced in the 1960s\, interest in this concept has recently exploded. This talk will provide an introduction to Markov chains\, an overview of the history of Kemeny’s constant\, discussion of some applications\, and a survey of recent results\, with an emphasis on those where the combinatorial structure of the Markov chain is of interest. This comes to the forefront when the Markov chain in question is a random walk on a graph\, in which case Kemeny’s constant is interpreted as a measure of how `well-connected’ the graph is.\n \nZoom link:\nhttps://us02web.zoom.us/j/86861499971?pwd=rTDAaju0TCu24asnaBGvkuNlT11KZ1.1\n\n\nMeeting ID: 868 6149 9971\nPasscode: 325258
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-25/
LOCATION:Online via Zoom
CATEGORIES:AARMS Atlantic Graph Theory Seminar
ORGANIZER;CN="jeannette Janssen":MAILTO:jeannette.janssen@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20250212T153000
DTEND;TZID=UTC:20250212T163000
DTSTAMP:20260611T102749
CREATED:20250211T123857Z
LAST-MODIFIED:20250211T124101Z
UID:7937-1739374200-1739377800@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar
DESCRIPTION:Time: 3:30 pm\, Atlantic time\, (4:00 pm NST) Wednesday\, Feb. 12\nSpeaker: Robert Bailey\, Memorial University\nTitle: Computer constructions of distance-regular graphs with primitive automorphism groups\n\nAbstract:\nA graph is distance-regular if\, for each vertex $v$ and each vertex $w$ at distance $i$ from $v$\, the number of neighbours of $w$ at distances $i-1$\, $i$ or $i+1$ from $v$ depends only on $i$\, and not on the choice of $v$ or $w$.  These are highly-structured graphs with interesting structural and algebraic properties.  Many of the well-known examples have large symmetry groups.\n\nThe GAP computer algebra system contains libraries of primitive permutation groups (i.e. those which preserve no interesting equivalence relations).  With the assistance of my undergraduate research students\, I have been analyzing these libraries with the ultimate aim of classifying the distance-regular graphs with such groups as automorphism groups.  In this talk\, I will discuss the status of this work\, a few surprises which came up along the way\, and some (theoretical and computational) questions which remain open.\n \nZoom link:\nhttps://us02web.zoom.us/j/86861499971?pwd=rTDAaju0TCu24asnaBGvkuNlT11KZ1.1\n\nMeeting ID: 868 6149 9971\nPasscode: 325258
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-26/
LOCATION:Online via Zoom
CATEGORIES:AARMS Atlantic Graph Theory Seminar
ORGANIZER;CN="jeannette Janssen":MAILTO:jeannette.janssen@dal.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250215
DTEND;VALUE=DATE:20250216
DTSTAMP:20260611T102749
CREATED:20250121T120849Z
LAST-MODIFIED:20250121T120849Z
UID:7877-1739577600-1739663999@aarms.math.ca
SUMMARY:Girls STEM Up Conference 2025: connect and Conquer
DESCRIPTION:Girls STEM Up is collectively 28 women students based in Fredericton\, NB\, who are passionate about bridging the gap of gender inequity in STEM fields\, focusing on intersectionality. Founded in 2019\, with the goal of sparking necessary discussions and changing the perception of women in STEM. We have since expanded to include 60+ general members\, high school ambassadors\, and volunteers.\nOur experiences as underrepresented individuals in STEM have brought us together to promote diversity\, inclusion\, and equity in these fields through representation\, awareness\, and education. \nWe proudly host an annual conference celebrating girls’ and women in STEM’s achievements. Our event provides an extraordinary platform for women and girls to connect with like-minded individuals\, exchange valuable knowledge\, and shine spotlight to incredible success stories in STEM. This ignites passion in those pursuing STEM careers. Our sixth edition of the conference GSU: Connect and Conquer will take place in February 2025.
URL:https://aarms.math.ca/event/girls-stem-up-conference-2025-connect-and-conquer/
LOCATION:Delta Hotels by Mariott Fredericton\, 225 Woodstock Rd\, Fredericton\, New Brunswick\, Canada
CATEGORIES:AARMS sponsored events
ORGANIZER;CN="Emma Russell":MAILTO:erussel6@unb.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20250226
DTEND;VALUE=DATE:20250227
DTSTAMP:20260611T102749
CREATED:20250121T175824Z
LAST-MODIFIED:20250121T175824Z
UID:7903-1740528000-1740614399@aarms.math.ca
SUMMARY:2025 Integration Competition
DESCRIPTION:The Integration Competition is a fun\, head-to-head competition among first-year calculus students to solve integrals\, with the winners of each matchup progressing to further rounds until a winner emerges. Participants challenge themselves to solve integral problems on-the-spot\, and in addition to generating interest and excitement in mastering this mathematical skill\, the event is used to promote mathematics more broadly to potential majors.
URL:https://aarms.math.ca/event/2025-integration-competition/
LOCATION:Saint Francis Xavier University\, 4130 University Avenue\, Antigonish\, Nova Scotia\, B2G 2W5\, Canada
CATEGORIES:AARMS outreach events
ORGANIZER;CN="Ryan Lukeman":MAILTO:rlukeman@stfx.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=UTC:20250226T153000
DTEND;TZID=UTC:20250226T163000
DTSTAMP:20260611T102749
CREATED:20250220T195135Z
LAST-MODIFIED:20250220T195135Z
UID:7949-1740583800-1740587400@aarms.math.ca
SUMMARY:Atlantic Graph Theory Seminar
DESCRIPTION:Speaker: Karen Meagher\, University of Regina\nTitle: Derangement graphs and the intersection density of permutation groups\n\nAbstract:\nTwo permutations are intersecting if they both map some $i$ to the same point\, equivalently\, permutations $\sigma$\nand $\pi$ are intersecting if and only if $\pi^{-1}\sigma$ has a fixed point. A set of permutations is called intersecting if any two permutations in the set are intersecting. For any transitive group the stabilizer of a point is an intersecting set. The intersection density of a permutation group is the ratio of the size of the largest intersecting set in the group\, to the size of the stabilizer of a point. If the intersection density of a group is 1\, then the stabilizer of a point is an intersecting set of maximum size. Such groups are said to have the Erd\H{o}s-Ko-Rado property.\n\nOne effective way to determine the intersection density of a group is build a graph whose vertices are the elements of the group and the edges are defined so that the cocliques (or the independent sets) in the graph are exactly the intersecting sets in the group. This graph is called the derangement graph for the group. The focus on this talk is to demonstrate several ways we can use the derangement graph to find the intersection density of a group.\n\nAn easy example of how this can be done is if the graph has a clique with the size of the degree of the group\, then the group has intersection density 1. We can also use graph homomorphisms to find bounds on the intersection density. For many small groups\, the derangement graph has a very simple form and the intersection density of the group can be easily found simply from the structure of the derangement graph. In a surprising number of cases\, eigenvalues of the derangement graph can be found using the representation theory of the group and\, using tools from algebraic graph theory\, these eigenvalues can be used to bound the size of a coclique.\n\nZoom link:\nhttps://us02web.zoom.us/j/86861499971?pwd=rTDAaju0TCu24asnaBGvkuNlT11KZ1.1\n\nMeeting ID: 868 6149 9971\nPasscode: 325258
URL:https://aarms.math.ca/event/atlantic-graph-theory-seminar-27/
LOCATION:Online via Zoom
CATEGORIES:AARMS Atlantic Graph Theory Seminar
ORGANIZER;CN="jeannette Janssen":MAILTO:jeannette.janssen@dal.ca
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