Results 141 to 150 of about 2,689 (164)

A Gaussian Lower Bound for the Dirichlet Heat Kernel

Bulletin of the London Mathematical Society, 1992
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Reproducing Kernels and Extremal Functions in Dirichlet-Type Spaces

Journal of Mathematical Sciences, 2001
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A nonsingular-kernel Dirichlet-to-Dirichlet mapping method for the exterior Stokes problem

Advances in Computational Mathematics
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Xiaojuan Liu, Maojun Li, Tao Yin, Shangyou Zhang   +3 more
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The Dirichlet and Fejér Kernels. Cesàro Summability

1979
In this chapter we introduce the so-called Dirichlet and Fejer kernels and their elementary properties. These kernels are basic in the study of point wise convergence and summability, respectively, of Fourier series. From their properties we shall derive the localization principle, together with alternative proofs of the uniqueness and approximation ...
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On Decomposition of the Dirichlet Kernel on Vilenkin Groups

Sarajevo Journal of Mathematics
We give a useful decomposition of the Dirichlet kernel on Vilenkin groups.
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The Spectral Envelope Estimate via Dirichlet Kernel Function

Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 )
In this article the spectral envelope function for a nonstationary time series is estimated by using the Dirichlet kernel function. we divide the time series into a number of segmentations, then the nonstationary problem is solved to reduce its effect. The simulation and the sequence of the nitrogenous bases of the DNA of Escherichia coli bacteria are ...
Tahir R. Dikheel, null Ali J. Alkenani, null Ali G. Abood   +2 more
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Triangular Dirichlet Kernels and Growth of L p Lebesgue Constants

Journal of Fourier Analysis and Applications, 2009
The following estimate of the \(L^p\) norm of the two-dimensional triangular Dirichlet kernel is obtained. For each finite \(p>1\) and arbitrary \(N\geq1\), \[ \int_{\mathbb T^2}\left|\,\sum\limits_{n\in K_{\alpha,N}\cap\mathbb Z^2} e^{i(n_1x_1+n_2x_2)}\right|^p\,dx\leq C_pN^{2p-2} \] uniformly with respect to \(\alpha\) and \(N\), where \[ K_{\alpha,N}
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The Dirichlet Heat Kernel in Inner Uniform Domains in Fractal-Type Spaces

Potential Analysis, 2021
exaly  

Heat kernel estimates for the fractional Laplacian with Dirichlet conditions

Annals of Probability, 2010
Krzysztof Bogdan, Tomasz Grzywny, Michał Ryznar   +2 more
exaly  

The Dirichlet heat kernel in inner uniform domains: Local results, compact domains and non-symmetric forms

Journal of Functional Analysis, 2014
Laurent Saloff-Coste
exaly