Results 21 to 30 of about 181,310 (279)
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
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
Covariant Algebraic Method for Calculation of the Low-Energy Heat Kernel [PDF]
, 1995 Using our recently proposed covariant algebraic approach the heat kernel for a Laplace-like differential operator in low-energy approximation is studied.
Gilkey P. B., I. G. Avramidi
core +2 more sources
On the Dimensional Reduction Procedure [PDF]
, 2000 The issue related to the so-called dimensional reduction procedure is revisited within the Euclidean formalism. First, it is shown that for symmetric spaces, the local exact heat-kernel density is equal to the reduced one, once the harmonic sum has been ...
Balbinot +38 more
core +3 more sources
Weighted Nash Inequalities [PDF]
, 2010 Nash or Sobolev inequalities are known to be equivalent to ultracontractive properties of Markov semigroups, hence to uniform bounds on their kernel densities.
Bakry, Dominique +3 more
core +6 more sources
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
Covariant techniques for computation of the heat kernel [PDF]
, 1997 The heat kernel associated with an elliptic second-order partial differential operator of Laplace type acting on smooth sections of a vector bundle over a Riemannian manifold, is studied.
Gilkey P. B., I. G. AVRAMIDI
core +3 more sources
Cones, spins and heat kernels [PDF]
Nuclear Physics B, 1997 The heat kernels of Laplacians for spin 1/2, 1, 3/2 and 2 fields, and the asymptotic expansion of their traces are studied on manifolds with conical singularities. The exact mode-by-mode analysis is carried out for 2-dimensional domains and then extended to arbitrary dimensions.
FURSAEV D. V, MIELE, GENNARO
openaire +4 more sources
Heat-kernel approach for scattering [PDF]
, 2015 An approach for solving scattering problems, based on two quantum field theory methods, the heat kernel method and the scattering spectral method, is constructed.
Dai, Wu-Sheng, Li, Wen-Du
core +2 more sources
On the Diamond Bessel Heat Kernel
Journal of Applied Mathematics, 2011 We study the heat equation in n dimensional by Diamond Bessel operator. We find the solution by method of convolution and Fourier transform in distribution theory and also obtain an interesting kernel related to the spectrum and the kernel which is ...
Wanchak Satsanit
doaj +1 more source