Results 11 to 20 of about 537,126 (291)
Multiresolution separated representations of singular and weakly singular operators [PDF]
For a finite but arbitrary precision, efficient low separation rank representations for the Poisson kernel and for the projector on the divergence free functions in the dimension \(d=3\)are constructed. The given construction requires computing only one-dimensional integrals.
Beylkin, Gregory +3 more
openaire +2 more sources
On Weakly Singular Versions of Discrete Nonlinear Inequalities and Applications [PDF]
Some new weakly singular versions of discrete nonlinear inequalities are established, which generalize some existing weakly singular inequalities and can be used in the analysis of nonlinear Volterra type difference equations with weakly singular kernels.
Kelong Cheng, Chunxiang Guo, Qingke Zeng
doaj +2 more sources
A note on the polynomial approximation of vertex singularities in the boundary element method in three dimensions [PDF]
We study polynomial approximations of vertex singularities of the type $r^\lambda |\log r|^\beta$ on three-dimensional surfaces. The analysis focuses on the case when $\lambda > -\frac 12$.
Bespalov, A, Bespalov, Alexei
core +7 more sources
An hp-version discontinuous Galerkin method for integro-differential equations of parabolic type [PDF]
We study the numerical solution of a class of parabolic integro-differential equations with weakly singular kernels. We use an $hp$-version discontinuous Galerkin (DG) method for the discretization in time.
H. Mustapha +7 more
core +4 more sources
On Type I singularities in Ricci flow [PDF]
07.02.13 KB. Accepted version ok to add to Spiral. IP/Sherpa.We define several notions of singular set for Type I Ricci flows and show that they all coincide.
Topping, P, Enders, J, Müller, R
core +6 more sources
Stabilization of solutions of weakly singular quenching problems [PDF]
In this paper we prove that if 0 > β
Fila, Marek +2 more
openaire +2 more sources
Lagrangian flows for vector fields with gradient given by a singular integral [PDF]
We prove quantitative estimates on ows of ordinary di erential equations with vector field with gradient given by a singular integral of an L1 function.
Crippa, Gianluca, Bouchut, Francois
core +1 more source
On singular projective deformations of two second class totally focal pseudocongruences of planes
Let C:L→L¯ be a projective deformation of the second order of two totally focal pseudocongruences L and L¯ of (m−1)-planes in projective spaces Pn and P¯n, 2m−1 ...
Ludmila Goldberg
doaj +1 more source
In this paper, the governing model with the inclusion of parabolic law nonlinearity, weakly non-local nonlinearity in addition to perturbation terms is examined for the sake of uncovering quite important optical soliton solutions.
Anjan Biswas +5 more
doaj +1 more source
In this paper, a new approach for solving the system of fractional integro-differential equation with weakly singular kernels is introduced. The method is based on a class of symmetric orthogonal polynomials called shifted sixth-kind Chebyshev ...
S. Yaghoubi, H. Aminikhah, K. Sadri
doaj +1 more source

