Results 11 to 20 of about 5,245,414 (245)

Numerical solution of two dimensional harmonic boundary problems containing singularities by conformal transformation methods [PDF]

open access: yes, 1971
Numerical solutions to a class of two dimensional harmonic mixed boundary value problems defined on rectangular domains and containing singularities are obtained using conformal transformation methods.
Whiteman, J R, Papamichael, N
core   +6 more sources

A note on the polynomial approximation of vertex singularities in the boundary element method in three dimensions [PDF]

open access: yes, 2008
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
core   +7 more sources

The treatment of corner and pole-type singularities in numerical conformal mapping techniques [PDF]

open access: yes, 1984
This paper is a report of recent developments concerning the nature and the treatment of singularities that affect certain numerical conformal mapping techniques.
Warby, MK, Hough, DM, Papamichael, N
core   +6 more sources

Polarization singularities in isotropic random vector waves [PDF]

open access: yes, 2001
Following Nye & Hajnal, we explore the geometry of complex vector waves by regarding them as a field of polarization ellipses. Singularities of this field are the C lines and L lines, where the polarization is purely circular and purely linear ...
Dennis, MR   +5 more
core   +1 more source

Global configurations of singularities for quadratic differential systems with exactly three finite singularities of total multiplicity four

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this article we obtain the geometric classification of singularities, finite and infinite, for the two subclasses of quadratic differential systems with total finite multiplicity $m_f=4$ possessing exactly three finite singularities, namely: systems ...
Joan Artés   +3 more
doaj   +1 more source

Tjurina and Milnor numbers of matrix singularities [PDF]

open access: yes, 2005
To gain understanding of the deformations of determinants and Pfaffians resulting from deformations of matrices, the deformation theory of composites f ◦ F with isolated singularities is studied, where f : Y −→C is a function with (possibly non-isolated)
Mond, D. (David), Goryunov, Victor V.
core   +1 more source

Del Pezzo Singularities and SUSY Breaking

open access: yesAdvances in High Energy Physics, 2011
An analytic construction of compact Calabi-Yau manifolds with del Pezzo singularities is found. We present complete intersection CY manifolds for all del Pezzo singularities and study the complex deformations of these singularities.
Dmitry Malyshev
doaj   +1 more source

Simple curve singularities

open access: yes, 2015
In this paper we classify simple parametrisations of complex curve singularities of arbitrary embedding dimension. Simple means that all neighbouring singularities fall in finitely many equivalence classes.
Stevens, Jan, Stevens, Jan,
core   +1 more source

Phase singularities in isotropic random waves [PDF]

open access: yes, 2000
The singularities of complex scalar waves are their zeros; these are dislocation lines in space, or points in the plane. For waves in space, and waves in the plane (propagating in two dimensions, or sections of waves propagating in three), we calculate ...
Dennis, MR   +5 more
core   +1 more source

On the classification of rational surface singularities

open access: yes, 2012
A general strategy is given for the classification of graphs of rational surface singularities. For each maximal rational double point configuration we investigate the possible multiplicities in the fundamental cycle. We classify completely certain types
Stevens, Jan, Jan Stevens, Stevens, Jan,
core   +1 more source

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