Results 31 to 40 of about 2,478,358 (353)
Photometric Heat Kernel Signatures [PDF]
, 2012 In this paper, we explore the use of the diffusion geometry framework for the fusion of geometric and photometric information in local heat kernel signature shape descriptors. Our construction is based on the definition of a diffusion process on the shape manifold embedded into a high-dimensional space where the embedding coordinates represent the ...
Kovnatsky, Artiom +3 more
openaire +1 more source
Heat kernel estimates for symmetric jump processes with mixed polynomial growths [PDF]
Annals of Probability, 2018 In this paper, we study the transition densities of pure-jump symmetric Markov processes in $ {{\mathbb R}}^d$, whose jumping kernels are comparable to radially symmetric functions with mixed polynomial growths. Under some mild assumptions on their scale
Joohak Bae +3 more
semanticscholar +1 more source
A Varadhan Estimate for Big Order Differential Generators
Computer Sciences & Mathematics Forum, 2023 We give a logarithmic estimate of an elliptic semi-group generated by a big-order generator by using the Malliavin Calculus of Bismut type and large deviation estimates.
Rémi Léandre
doaj +1 more source
Quasisymmetric uniformization and heat kernel estimates [PDF]
Transactions of the American Mathematical Society, 2018 We show that the circle packing embedding in R 2 \mathbb {R}^2 of a one-ended, planar triangulation with polynomial growth is quasisymmetric if and only if the simple random walk on the graph satisfies sub-Gaussian heat kernel estimate
M. Murugan
semanticscholar +1 more source
Heat kernel estimates and intrinsic metric for random walks with general speed measure under degenerate conductances [PDF]
Electronic Communications in Probability, 2017 We establish heat kernel upper bounds for a continuous-time random walk under unbounded conductances satisfying an integrability assumption, where we correct and extend recent results by the authors to a general class of speed measures.
S. Andres, J. Deuschel, Martin Slowik
semanticscholar +1 more source
Besov class via heat semigroup on Dirichlet spaces II: BV functions and Gaussian heat kernel estimates [PDF]
Calculus of Variations and Partial Differential Equations, 2018 We introduce the class of bounded variation (BV) functions in a general framework of strictly local Dirichlet spaces with doubling measure. Under the 2-Poincaré inequality and a weak Bakry–Émery curvature type condition, this BV class is identified with ...
P. Alonso-Ruiz +5 more
semanticscholar +1 more source
Revisiting the heat kernel on isotropic and nonisotropic Heisenberg groups* [PDF]
Communications in Partial Differential Equations, 2018 The aim of this paper is threefold. First, we obtain the precise bounds for the heat kernel on isotropic Heisenberg groups by using well-known results in the three-dimensional case.
Hong-Quan Li, Yehui Zhang
semanticscholar +1 more source
Heat Stress After Pollination Reduces Kernel Number in Maize by Insufficient Assimilates
Frontiers in Genetics, 2021 Global warming has increased the occurrence of high temperature stress in plants, including maize, resulting in decreased the grain number and yield. Previous studies indicate that heat stress mainly damages the pollen grains and thus lowered maize grain
Shiduo Niu +8 more
semanticscholar +1 more source
Variable Besov–Morrey Spaces Associated with Operators
Mathematics, 2023 Let (X,d,μ) be a space of homogenous type and L be a non-negative self-adjoint operator on L2(X) with heat kernels satisfying Gaussian upper bounds. In this paper, we introduce the variable Besov–Morrey space associated with the operator L and prove that
Khedoudj Saibi
doaj +1 more source
Time Changes of the Brownian Motion: Poincaré Inequality, Heat Kernel Estimate and Protodistance
Memoirs of the American Mathematical Society, 2019 In this paper, time changes of the Brownian motions on generalized Sierpinski carpets including n-dimensional cube [0, 1] are studied. Intuitively time change corresponds to alteration to density of the medium where the heat flows.
Jun Kigami
semanticscholar +1 more source