Results 21 to 30 of about 71,302 (258)

Algebraic Tangent Cones of Reflexive Sheaves [PDF]

International Mathematics Research Notices, 2018
Abstract We study the notion of algebraic tangent cones at singularities of reflexive sheaves. These correspond to extensions of reflexive sheaves across a negative divisor. We show the existence of optimal extensions in a constructive manner, and we prove the uniqueness in a suitable sense.
Chen, Xuemiao, Sun, Song
openaire   +2 more sources

An alternative approach for a distance inequality associated with the second-order cone and the circular cone

Journal of Inequalities and Applications, 2016
It is well known that the second-order cone and the circular cone have many analogous properties. In particular, there exists an important distance inequality associated with the second-order cone and the circular cone.
Xin-He Miao, Yen-chi Roger Lin, Jein-Shan Chen   +2 more
doaj   +1 more source

On Tangent Cones of Schubert Varieties [PDF]

Arnold Mathematical Journal, 2017
We consider tangent cones of Schubert varieties in the complete flag variety, and investigate the problem when the tangent cones of two different Schubert varieties coincide. We give a sufficient condition for such coincidence, and formulate a conjecture that provides a necessary condition.
Fuchs, Dmitry, Kirillov, Alexandre, Morier-Genoud, Sophie, Ovsienko, Valentin   +3 more
openaire   +2 more sources

Singularities of plane complex curves and limits of Kähler metrics with cone singularities. I: Tangent Cones

Complex Manifolds, 2017
The goal of this article is to provide a construction and classification, in the case of two complex dimensions, of the possible tangent cones at points of limit spaces of non-collapsed sequences of Kähler-Einstein metrics with cone singularities.
Borbon Martin de
doaj   +1 more source

Local Structure of Convex Surfaces near Regular and Conical Points

Axioms, 2022
Consider a point on a convex surface in Rd, d≥2 and a plane of support Π to the surface at this point. Draw a plane parallel with Π cutting a part of the surface.
Alexander Plakhov
doaj   +1 more source

Cohen-Macaulayness of tangent cones [PDF]

Proceedings of the American Mathematical Society, 1999
We give a criterion for checking the Cohen-Macaulayness of the tangent cone of a monomial curve by using the Gröbner basis. For a family of monomial curves, we give the full description of the defining ideal of the curve and its tangent cone at the origin.
openaire   +3 more sources

Contributions to Four-Position Theory with Relative Rotations [PDF]

, 2009
We consider the geometry of four spatial displacements, arranged in cyclic order, such that the relative motion between neighbouring displacements is a pure rotation.
Schröcker, Hans-Peter
core   +1 more source

The nonuniqueness of the tangent cones at infinity of Ricci-flat manifolds

, 2016
It is shown by Colding and Minicozzi the uniqueness of the tangent cone at infinity of Ricci-flat manifolds with Euclidean volume growth which has at least one tangent cone at infinity with a smooth cross section.
Hattori, Kota
core   +1 more source

Computation of hydromagnetic tangent hyperbolic non-Newtonian flow from a rotating non-isothermal cone to a non-Darcy porous medium with thermal radiative flux

Physics Open
A theoretical and numerical study is conducted on nonlinear, steady-state thermal convection boundary layer flow of a magnetized incompressible Tangent Hyperbolic non-Newtonian fluid from a rotating cone to a non-Darcy porous medium.
S. Abdul Gaffar, O. Anwar Bég, S. Kuharat, T.A. Bég   +3 more
doaj   +1 more source

Spacelike developable surfaces through a common line of curvature in Minkowski 3-space

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
This paper studies the problem to construct a spacelike developable surface possessing a given non-null parametric curve as the line of curvature in Minkowski 3-space.
Cai-Yun LI, Chun-Gang ZHU, Ren-Hong WANG
doaj   +1 more source