• Atlantic GR Seminar: Kam To Billy Chan (MUN)

    Zoom seminar

    The Reissner-Nordstrom Near Horizon Geometry is a Tangent Spacetime The near horizon geometry (NHG) of an extremal Reissner-Nordstrom black hole is obtained in conventional global AdS coordinates and in the coordinates of the parent spacetime. Geometrical objects, specifically Killing vectors

  • Dalhousie-AARMS AAMP Seminar: John Toth (McGill University)

    Zoom seminar

    Title: Pointwise bounds for joint eigenfunctions of quantum completely integrable (QCI) systems Abstract: I will discuss some recent results on improvements in supremum bounds for joint eigenfunctions of QCI systems together with sharp exponential decay estimates away from the projections

  • Atlantic Graph Theory Seminar: David Pike (Memorial)

    Zoom seminar

    Perfect 1-Factorisations A matching in a graph $G$ is a subset $M \subseteq E(G)$ of the edge set of $G$ such that no two edges of $M$ share a vertex. A 1-factor of a graph $G$ is a matching $F$

  • Dalhousie-AARMS AAMP Seminar: Julie Rowlett (Chalmers, Sweden)

    Zoom seminar

    Decisions and Disease Do you usually get a flu shot every year? Do you usually take preventive measures to avoid contracting sexually transmitted infections? It is reasonable to expect that while many people may answer `no‘ to the first question,

  • Atlantic Graph Theory Seminar: Dr. Ben Cameron (University of Guelph)

    Zoom seminar

    Title: Families of graphs containing only finitely many vertex-critical graphs. In this talk, motivated by algorithmic aspects of graph colouring, we will consider the problem of classifying vertex-critical graphs in families of graphs. We will complete a dichotomy theorem for

  • Dalhousie-AARMS AAMP Seminar: Hari Kunduri (Memorial University)

    Zoom seminar

    Title: Geometric inequalities for axisymmetric black holes Abstract: In general relativity, isolated, dynamical black holes arise from asymptotically flat initial data for the Einstein equations. Such data are characterized by invariants such as the ADM mass and angular momentum. When angular

  • Atlantic GR Seminar: Turkuler Durgut (MUN)

    Zoom seminar

    Asymptotically Anti-de Sitter Gravitational Solitons In 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

  • Dalhousie-AARMS AAMP Seminar: Jean-Pierre Garbardo (McMaster University)

    Zoom seminar

    Title: Factorization of positive definite functions through convolution and the Turàn problem Abstract: If $G$ is a finite abelian group, we call a subset $S\subset G$ symmetric if $0\in G$ and $-x\in S$ whenever $x\in S$. We also let $S^*=(G\setminus