Results 11 to 20 of about 12,637 (295)
The Geometric Hopf Invariant and Surgery Theory [PDF]
Written by leading experts in the field, this monograph provides homotopy theoretic foundations for surgery theory on higher-dimensional manifolds. Presenting classical ideas in a modern framework, the authors carefully highlight how their results relate
Michael Crabb, Andrew Ranicki
exaly +4 more sources
Geometric invariant theory and Einstein–Weyl geometry [PDF]
In this article, we give a survey of Geometric Invariant Theory for Toric Varieties, and present an application to the Einstein-Weyl Geometry. We compute the image of the Minitwistor space of the Honda metrics as a categorical quotient according to the most efficient linearization. The result is the complex weighted projective space CP_(1,1,2). We also
Kalafat, Mustafa, Mustafa Kalafat
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A Euclidean Geometric Invariant of Framed (Un)Knots in Manifolds [PDF]
We present an invariant of a three-dimensional manifold with a framed knot in it based on the Reidemeister torsion of an acyclic complex of Euclidean geometric origin.
Jérôme Dubois +2 more
doaj +3 more sources
Towards Non-Reductive Geometric Invariant Theory [PDF]
37 pages, 1 figure (parabola2.eps), in honor of Bob MacPherson's 60th ...
Doran, B, Kirwan, F
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Quantum Mechanics and Quantum Field Theory: Algebraic and Geometric Approaches
This is a non-standard exposition of the main notions of quantum mechanics and quantum field theory, including recent results. It is based on the algebraic approach in which the starting point is a star-algebra and on the geometric approach in which the ...
Igor Frolov, Albert Schwarz
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Stability conditions in geometric invariant theory [PDF]
ABSTRACT We explain how structures analogous to those appearing in the theory of stability conditions on abelian and triangulated categories arise in geometric invariant theory. This leads to an axiomatic notion of a central charge on a scheme with a group action and ultimately to a notion of a stability condition on a stack analogous to
Ruadhaí Dervan +1 more
core +4 more sources
Variation of geometric invariant theory quotients [PDF]
Plain Tex, Revised version, to appear in Publ. Math.
Dolgachev, Igor V., Hu, Yi
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Cocientes algebraicos y Teoría de Invariantes Geométricos
The quotient of an algebraic variety by action of an algebraic group does not always has a variety structure. The aim of this work is to describe a methodfor constructing good quotients, in the sense of Geometric invariant theory, in algebraicgeometry.
Nélida Medina García
doaj +1 more source
A Robust Image Watermarking Scheme Based on Image Normalization and Contourlet Transform
It is a challenging work to solve the geometric attack in the field of digital watermarking. In order to solve the synchronization between the host image and the watermark, image normalization is introduced.
Shaobao Wu +3 more
doaj +1 more source
We take advantage of the principal bundle geometry of the space of connections to obtain general results on the presymplectic structure of two classes of (pure) gauge theories: invariant theories, and non-invariant theories satisfying two restricting ...
J. François
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