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SUMMARY:Atlantic GR Seminar: Turkuler Durgut (MUN)
DESCRIPTION:Asymptotically Anti-de Sitter Gravitational Solitons\nIn this talk\, I will consider the stability of asymptotically anti-de Sitter gravitational solitons. These are globally stationary\, asymptotically (globally) AdS spacetimes with positive energy but without horizons. I will introduce my ongoing project investigating solutions of the linear wave equation in this class of backgrounds. I will provide analytical expressions for the behavior of the scalar field near the soliton bubble and at spatial infinity. The special BPS (supersymmetric) case will then be examined as an example of a solution where stable trapping occurs. This project is joint work with Dr. Hari K. Kunduri and Dr. Robie A. Hennigar. \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-2020-10-28/
LOCATION:Zoom seminar
CATEGORIES:Atlantic GR Seminars
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SUMMARY:Atlantic Graph Theory Seminar:  Iain Beaton (PhD Candidate\, Dalhousie University)
DESCRIPTION:The Average Order of Dominating Sets of a Graph\nThis talk focuses on the average order of dominating sets of a graph. We find the extremal graphs for the maximum and minimum value over all graphs on n vertices\, while for trees we prove that the star minimizes the average order of dominating sets. We prove the average order of dominating sets in graphs without isolated vertices is at most 3n/4\, but provide evidence that the actual upper bound is 2n/3. Finally\, we show that the normalized average\, while dense in [1/2\,1]\, tends to 1/2 for almost all 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-2020-10-28/
LOCATION:Zoom seminar
CATEGORIES:Atlantic Graph Theory Seminar
ORGANIZER;CN="Jason Brown":MAILTO:jason.brown@dal.ca
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