Results 11 to 20 of about 27,767 (221)

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

open access: yesComplex 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   +3 more sources

On Certain Classes of Curve Singularities with Reduced Tangent Cone [PDF]

open access: yes, 1999
We study a class of rational curves with an ordinary singular point, which was introduced in [Geramita and Orecchia, Minimally Generating Ideals Defining Certain Tangent Cones, J. of Algebra 78, No. 1 (1982), 36 – 57].
DE PARIS, ALESSANDRO
core   +1 more source

Singularity of Mean Curvature Flow of Lagrangian Submanifolds [PDF]

open access: yes, 2003
In this article we study the tangent cones at first time singularity of a Lagrangian mean curvature flow. If the initial compact submanifold is Lagrangian and almost calibrated by Re\Omega in a Calabi-Yau n-fold (M,\Omega), and T>0 is the first blow-up ...
Chen, Jingyi, Li, Jiayu
core   +1 more source

Blending Cylinders and Cones using Canal Surfaces

open access: yesNonlinear Analysis, 2000
There is reviewed the construction of a rational blending surface between cylinders and cones in some interlocation cases. This surface is constructed as a patch of rolling ball envelope, i.e.
M. Kazakevičiūtė, R. Krasauskas
doaj   +1 more source

On Tangent Cones of Schubert Varieties [PDF]

open access: yesArnold 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   +3 more
openaire   +2 more sources

A notion of rectifiability modeled on Carnot groups [PDF]

open access: yes, 2004
We introduce a notion of rectifiability modeled on Carnot groups. Precisely, we say that a subset E of a Carnot group M and N is a subgroup of M, we say E is N-rectifiable if it is the Lipschitz image of a positive measure subset of N.
Pauls, Scott D.
core   +4 more sources

Tangent cones to positive-(1,1) De Rham currents [PDF]

open access: yes, 2011
We consider positive-(1,1) De Rham currents in arbitrary almost complex manifolds and prove the uniqueness of the tangent cone at any point where the density does not have a jump with respect to all of its values in a neighbourhood.
Bellettini, Costante
core   +3 more sources

Cohen-Macaulayness of tangent cones [PDF]

open access: yesProceedings 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

Algebraic vertices of non-convex polyhedra [PDF]

open access: yes, 2017
In this article we define an algebraic vertex of a generalized polyhedron and show that it is the smallest set of points needed to define the polyhedron.
Akopyan, Arseniy   +2 more
core   +2 more sources

Rigidity of irreducible Hermitian symmetric spaces of the compact type under K"ahler deformation [PDF]

open access: yes, 1996
We study deformations of irreducible Hermitian symmetric spaces $S$ of the compact type, known to be locally rigid, as projective-algberaic manifolds and prove that no jump of complex structures can occur.
Hwang, Jun-Muk, Mok, Ngaiming
core   +3 more sources

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