Results 21 to 30 of about 3,199,416 (302)

Singular Higher Order Divergence-Conforming Bases of Additive Kind and Moments Method Applications to 3D Sharp-Wedge Structures [PDF]

open access: yes, 2008
We present new subsectional, singular divergence conforming vector bases that incorporate the edge conditions for conducting wedges. The bases are of additive kind because obtained by incrementing the regular polynomial vector bases with other ...
GRAGLIA, Roberto   +2 more
core   +1 more source

Indefinite Hamiltonian systems whose Titchmarsh–Weyl coefficients have no finite generalized poles of non-positive type [PDF]

open access: yes, 2013
The two-dimensional Hamiltonian system (*)  y'(x)=zJH(x)y(x),  x∈(a,b), where the Hamiltonian H takes non-negative 2x2-matrices as values, and $J:= \begin{pmatrix} 0 & -1 \\ 1 & 0 \end{pmatrix}$, has attracted a lot of interest over the past decades ...
Langer, Matthias, Woracek, Harald
core   +4 more sources

Jost function for singular potentials [PDF]

open access: yesPhysical Review A, 1999
12 pages, latex, 2 eps-figures, submitted to Phys.Rev ...
Sofianos, S. A.   +2 more
openaire   +3 more sources

Design of quadrature rules for Müntz and Müntz-logarithmic polynomials using monomial transformation [PDF]

open access: yes, 2009
A method for constructing the exact quadratures for Müntz and Müntz-logarithmic polynomials is presented. The algorithm does permit to anticipate the precision (machine precision) of the numerical integration of Müntz-logarithmic polynomials in terms of ...
Lombardi, Guido, Guido Lombardi
core   +1 more source

On singular sets of c-concave functions [PDF]

open access: yes, 2017
We prove that under quite general condition on a cost function c in R n the Hausdorff dimension of the singular set of a c-concave function has dimension at most n - 1. Our result applies for non-semiconcave cost functions and has applications in optimal
Zoltán M. Balogh   +3 more
core   +2 more sources

Singular random matrix decompositions: distributions. [PDF]

open access: yes, 2002
Assuming that Y has a singular matrix variate elliptically contoured distribution with respect to the Hausdorff measure, the distributions of several matrices associated to QR, modified QR, SV and Polar decompositions of matrix Y are determined, for ...
González Farías, Graciela   +3 more
core   +1 more source

TO THE QUESTION OF UNIQUENESS OF DEGENERATE SINGULAR INTEGRAL EQUATIONS SOLUTIONS

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. The work is devoted to the study of sets of functions in which the condition for the unique solvability of degenerate singular integral equations is satisfied.
I. V. Boykov   +2 more
doaj   +1 more source

Topology of Locally and Non-Locally Generalized Derivatives

open access: yesFractal and Fractional
This article investigates the continuity of derivatives of real-valued functions from a topological perspective. This is achieved by the characterization of their sets of discontinuity.
Dimiter Prodanov
doaj   +1 more source

Singularities of Hypoelliptic Green Functions [PDF]

open access: yesPotential Analysis, 1998
This paper is devoted to a precise description of the singularity near the diagonal of the Green function associated to a hypoelliptic operator using a probabilistic approach. Examples and some applications to potential theory are given.
Ben Arous, Gérard, Gradinaru, Mihai
openaire   +4 more sources

Singular random matrix decompositions: Jacobians. [PDF]

open access: yes, 2002
For a singular random matrix Y, we find the Jacobians associated with the following decompositions; QR, Polar, Singular Value (SVD), L'U, L'DM and modified QR (QDR).
González Farías, Graciela   +1 more
core   +1 more source

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