Results 61 to 70 of about 91,268 (87)

On representation theory and the cohomology rings of irreducible compact hyperkähler manifolds of complex dimension four

Open Mathematics, 2003
Guan Daniel
doaj   +1 more source

Algebraic nonhyperbolicity of hyperkähler manifolds with picard rank greater than one

, 2017
A projective manifold is algebraically hyperbolic if the de-gree of any curve is bounded from above by its genus times a constant, which is independent from the curve. This is a property which follows from Kobayashi hyperbolicity.
Verbitskiy, Misha, Kamenova, Ljudmila
core  

Quaternionic geometry of matroids

Open Mathematics, 2005
Hausel Tamás
doaj   +1 more source

Subgroup separability, knot groups, and graph manifolds

, 2000
This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T., Graham A. Niblo, Daniel T. Wise, Niblo, Graham A.   +3 more
core  

Subgroup separability, knot groups, and graph manifolds

, 2001
This paper answers a question of Burns, Karrass and Solitar by giving examples of knot and link groups which are not subgroup-separable. For instance, it is shown that the fundamental group of the square knot complement is not subgroup separable.
Wise, Daniel T., Niblo, Graham A.
core  

Roundness of the ample cone and existence of double Lagrangian fibrations on hyperkähler manifolds

Let M be a hyperkähler manifold of maximal holonomy (i.e., an IHS manifold), and let K be its Kähler cone, which is an open, convex subset in the space H1,1(M,R) of real (1,1)-forms.
Misha Verbitsky, Ljudmila Kamenova
core   +1 more source

Hyperkähler manifolds

, 2018
International audienceThe aim of these notes is to acquaint the reader with important objects in complex algebraic geometry: K3 surfaces and their higher-dimensional analogs, hyperk\"ahler manifolds. These manifolds are interesting from several points of
Debarre, Olivier
core   +1 more source

Unstable minimal spheres with degree-1 Gauss lift in hyperkähler 4-manifolds

We exhibit new minimal 2-spheres in hyperkähler 4-manifolds arising from the Gibbons--Hawking ansatz and in the K3 manifold endowed with a hyperkähler metric.
Trinca, Federico, Foscolo, Lorenzo
core  

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Advances in matrix manifolds for computer vision

Image and Vision Computing, 2012
Yui Man Lui
exaly  

Weak Sharp Minima on Riemannian Manifolds

SIAM Journal on Optimization, 2011
Jen-Chih Yao, Boris Mordukhovich, Chong Li   +2 more
exaly