Results 21 to 30 of about 118,819 (179)

The Structure of Operators on Manifolds with Polyhedral Singularities [PDF]

open access: yes, 2006
We discuss intuitive ideas and historical background of concepts in the analysis on configurations with singularities, here in connection with our iterative approach for higher singularities.
openaire   +4 more sources

Singular vertices of nonnegatively curved integral polyhedral 3-manifolds [PDF]

open access: yes, 2023
In this paper, we study polyhedral 3-manifolds with nonnegative curvature and integral monodromy, two conditions motivated by Thurston's work in arXiv:math/9801088. We classify the 32 isometry types of codimension 3 singularities in such manifolds.
Sharpe, Thomas
core   +1 more source

The Seiberg-Witten equations on 3-manifolds with boundary [PDF]

open access: yes, 1999
The Seiberg-Witten equations have proved to be quite powerful in studying smooth 4-manifolds since their landing in 1994. The corresponding Seiberg-Witten theory on closed 3-manifolds can either be obtained by a dimension reduction from the four ...
Yang, Qing
core   +1 more source

Identifying and remeshing contact interfaces in a polyhedral assembly for digital mock-up applications [PDF]

open access: yes, 2006
Polyhedral models are widely used for applications such as manufacturing, digital simulation or visualization. They are discrete models; easy to store, to manipulate, allowing levels of resolution for visualization.
VERON, Philippe, CHOUADRIA, RYM
core   +1 more source

Cohomology of D-complex manifolds [PDF]

open access: yes, 2012
In order to look for a well-behaved counterpart to Dolbeault cohomology in D-complex geometry, we study the de Rham cohomology of an almost D-complex manifold and its subgroups made up of the classes admitting invariant, respectively anti-invariant ...
Daniele Angella   +4 more
core   +1 more source

Computing one-dimensional global manifolds of Poincaré maps by continuation [PDF]

open access: yes, 2005
We present an algorithm to compute one-dimensional stable and unstable manifolds of saddle periodic orbits in a Poincaré section. The computation is set up as a boundary value problem by restricting the beginning and end points of orbit segments to the ...
England, James   +6 more
core   +1 more source

Quasi-Kahler Chern-flat manifolds and complex 2-step nilpotent Lie algebras [PDF]

open access: yes, 2012
The study of quasi-Kaehler Chern-flat almost Hermitian manifolds is strictly related to the study of anti-bi-invariant almost complex Lie algebras.
Lauret, J.   +2 more
core   +1 more source

Polyhedral neighborhoods in triangulated manifolds [PDF]

open access: yesBulletin of the American Mathematical Society, 1963
This note is an outline of some of the author's recent work concerning triangulated manifolds. A combinatorial structure is never assumed; indeed with this condition added, our results are mostly corollaries to well known theorems. The purpose of these investigations is two-fold: it is possible that they may lead to a proof of the cellularity of vertex
openaire   +3 more sources

Beurling-Landau's density on compact manifolds [PDF]

open access: yes, 2012
Given a compact Riemannian manifold $M$, we consider the subspace of $L^2(M)$ generated by the eigenfunctions of the Laplacian of eigenvalue less than $L\geq1$.
Ortega-Cerdà, Joaquim   +2 more
core   +1 more source

Ideal polyhedral surfaces in Fuchsian manifolds [PDF]

open access: yesGeometriae Dedicata, 2019
Let $S_{g,n}$ be a surface of genus $g > 1$ with $n>0$ punctures equipped with a complete hyperbolic cusp metric. Then it can be uniquely realized as the boundary metric of an ideal Fuchsian polyhedron. In the present paper we give a new variational proof of this result.
openaire   +3 more sources

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