4 papers
Heat kernel estimates on book-like graphs
Emily Dautenhahn, Laurent Saloff-Coste
In this paper, we prove two-sided heat kernel estimates on what we call "book-like" graphs. These are graphs consisting of pieces that satisfy the parabolic Harnack inequality that…
Faber-Krahn inequality and heat kernel estimates on glued graphs
Emily Dautenhahn, Laurent Saloff-Coste
Faber-Krahn functions provide lower bounds on the first Dirichlet eigenvalue of the Laplacian and are useful because they imply heat kernel upper bounds. In this paper, we are inte…
Hitting probabilities and uniformly -transient subgraphs
Emily Dautenhahn, Laurent Saloff-Coste
We study the probability that a random walk started inside a subgraph of a larger graph exits that subgraph (or, equivalently, hits the exterior boundary of the subgraph). Consider…
Heat kernel estimates on manifolds with ends with mixed boundary condition
Emily Dautenhahn, Laurent Saloff-Coste
We obtain two-sided heat kernel estimates for Riemannian manifolds with ends with mixed boundary condition, provided that the heat kernels for the ends are well understood. These r…