B. Güneysu

activity

20122022

collaborators

4 papers

math.FA2022

Essential spectrum and Feller type properties

Ali BenAmor, Batu Gueneysu, Peter Stollmann

We give necessary and sufficient conditions for a regular semi-Dirichlet form to enjoy a new Feller type property, which we call \emph{weak Feller property}. Our characterization i…

math.AP2021

Estimates for the covariant derivative of the heat semigroup on differential forms, and covariant Riesz transforms

Robert Baumgarth, Baptiste Devyver, Batu Güneysu

With $Δ_{j} \geq 0$ is the uniquely determined self-adjoint realization of the Laplace operator acting on $j$ -forms on a geodesically complete Riemannian manifold $M$ and $\nabla$ …

math.PR2017

Feynman path integrals for magnetic Schrödinger operators on infinite weighted graphs

Batu Güneysu, Matthias Keller

We prove a Feynman path integral formula for the unitary group $exp (- i t L_{v, θ})$ , $t \geq 0$ , associated with a discrete magnetic Schrödinger operator $L_{v, θ}$ on a large class o…

math.DG2012

Functions with bounded variation on a class of Riemannian manifolds with Ricci curvature unbounded from below

Batu Güneysu, Diego Pallara

After establishing some new global facts (like a measure theoretic structure theorem and approximation results) about complex-valued functions with bounded variation on arbitrary n…