Results 61 to 70 of about 2,341,415 (375)

FREDHOLM PROPERTY OF COMPOSITE TWO-DIMENSIONAL INTEGRAL OPERATORS WITH HOMOGENEOUS SINGULAR-TYPE KERNELS IN pL SPACE

open access: yesAdvanced Engineering Research, 2014
The authors have previously studied two - dimensional Fredholm integral operators with homogeneous kernels of fiber - singular type. For this class of operators, the symbolic calculus is built using the theory of biloc al operators by V.
Vladimir Mikhaylovich Deundyak   +1 more
doaj   +1 more source

New estimates for the maximal singular integral [PDF]

open access: yes, 2009
In this paper we pursue the study of the problem of controlling the maximal singular integral $T^{*}f$ by the singular integral $Tf$. Here $T$ is a smooth homogeneous Calder\'on-Zygmund singular integral of convolution type.
Centre de Recerca Matemàtica   +4 more
core   +3 more sources

Singular integrals in the Cesàro sense [PDF]

open access: yesThe Journal of Fourier Analysis and Applications, 2000
The existence of the singular integral ∫K(x, y)f(y)dy associated to a Calderón-Zygmund kernel where the integral is understood in the principal value sense TF(x)=limε→0+∫|x−y|>εK(x, y)f(y)dy has been well studied. In this paper we study the existence of the above integral in the Cesàro-α sense.
Bernardis, A.L., Martin-Reyes, F.J.
openaire   +4 more sources

Some new weakly singular integral inequalities and their applications to fractional differential equations

open access: yes, 2016
Some new inequalities with weakly singular integral kernel are developed, which generalize some known inequalities and can be used in the qualitative and quantitative analysis of the solutions to certain fractional differential equations.
R. Xu, F. Meng
semanticscholar   +1 more source

Solutions of singular integral equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1982
Qualitative behavior of solutions of possibly singluar integral equations is studied. It includes properties such as positivity, boundedness and monotonicity of the solutions of the infinite interval.
Rina Ling
doaj   +1 more source

Non-homogeneous impulsive time fractional heat conduction equation

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
This article provides a concise exposition of the integral transforms and its application to singular integral equation and fractional partial differential equations.
Arman Aghili
doaj   +1 more source

Rank one perturbations and singular integral operators [PDF]

open access: yes, 2008
We consider rank one perturbations $A_\alpha=A+\alpha(\cdot,\varphi)\varphi$ of a self-adjoint operator $A$ with cyclic vector $\varphi\in\mathcal H_{-1}(A)$ on a Hilbert space $\mathcal H$. The spectral representation of the perturbed operator $A_\alpha$
Liaw, Constanze, Treil, Sergei
core   +2 more sources

Lagrangian flows for vector fields with gradient given by a singular integral [PDF]

open access: yes, 2012
We prove quantitative estimates on flows of ordinary differential equations with vector field with gradient given by a singular integral of an L1 function.
F. Bouchut, Gianluca Crippa
semanticscholar   +1 more source

Integrable cross-field generation based on imposed singularity configuration -- the 2D manifold case -- [PDF]

open access: yesarXiv, 2022
This work presents the mathematical foundations for the generation of integrable cross-field on 2D manifolds based on user-imposed singularity configuration. In this paper, we either use singularities that appear naturally, e.g., by solving a non-linear problem, or use as an input user-defined singularity pattern, possibly with high valence ...
arxiv  

Regularity of the minimiser of one-dimensional interaction energies

open access: yes, 2019
We consider both the minimisation of a class of nonlocal interaction energies over non-negative measures with unit mass and a class of singular integral equations of the first kind of Fredholm type. Our setting covers applications to dislocation pile-ups,
Kimura, M., van Meurs, P.
core   +1 more source

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