Mathav Murugan
University of British Columbia
Scientific, Colloquia
PIMS/UBC Mathematical Sciences Early Career Award Colloquium: Mathav Murugan
The energy image density property arises in two seemingly distinct lines of research. It first appeared in Malliavin’s proof of Hörmander’s hypoellipticity theorem and has since played a central role in the study of regularity properties of...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
We affirmatively resolve the energy image density conjecture of Bouleau and Hirsch (1986). This conjecture generalizes a foundational result in Malliavin calculus: the non-degeneracy of the Malliavin matrix of a random variable implies absolute...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
Given a strongly local Dirichlet form on a metric measure space that satisfies Gaussian heat kernel bounds, we show that the martingale dimension of the associated diffusion process coincides with Cheeger's analytic dimension of the underlying metric...
Scientific, Summer School
2025 PIMS-CRM Summer School in Probability
Event Organizers Gordon Slade University of British Columbia Omer Angel University of British Columbia Louigi Addario-Berry McGill University Mathav Murugan University of British Columbia Course Descriptions Main course: Tom Hutchcroft Title...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
We describe a solution to the inverse problem of constructing diffusions and random walks with prescribed sub-Gaussian heat kernel bounds with given volume growth and escape time profiles.
Scientific, Colloquia
UBC Math Department Colloquium: Mathav Murugan
There is a well-developed theory of Sobolev spaces on metric measure spaces, stemming from the seminal works of Cheeger and Shanmugalingam in the 1990s. However, this notion does not lead to a suitable space for fractals. We develop an alternate...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
Spitzer (1958) showed that the trace of reflected Brownian motion on the upper half space on its boundary is a Cauchy process. More generally, every symmetric stable process in n-dimensional Euclidean space can be obtained as a trace process of a...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
I report recent progress on heat kernel estimates for reflected diffusion on uniform domains where the underlying space admits sub-Gaussian heat kernel bounds. A key novelty of our work is the use of an extension operator that extends functions from...
Scientific, Seminar
UBC Probability Seminar: Mathav Murugan
The conformal Assouad dimension is the infimum of all possible values of the Assouad dimension after a quasisymmetric change of metric. We show that the conformal Assouad dimension equals a critical exponent associated with the combinatorial modulus...
Scientific, Seminar
Probability Seminar: Mathav Murugan
A metric space is a length space if the distance between two points equals the infimum of the lengths of curves joining them. For a measured length space, we characterize Gaussian estimates for iterated transition kernel for random walks and...