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2001 (9)

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Book
Arithmétique des revêtements algébriques : actes du colloque de Saint-Etienne [24 - 26 mars 2000]
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ISBN: 2856291163 Year: 2001 Publisher: Paris : Société Mathématique de France - SMF,

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De Rham cohomology of differential modules on algebraic varieties
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ISBN: 3764363487 3034895224 3034883366 9783764363482 Year: 2001 Volume: 189 Publisher: Basel ; Berlin ; Boston : Birkhäuser,

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This is a study of algebraic differential modules in several variables, and of some of their relations with analytic differential modules. Let us explain its source. The idea of computing the cohomology of a manifold, in particular its Betti numbers, by means of differential forms goes back to E. Cartan and G. De Rham. In the case of a smooth complex algebraic variety X, there are three variants: i) using the De Rham complex of algebraic differential forms on X, ii) using the De Rham complex of holomorphic differential forms on the analytic an manifold X underlying X, iii) using the De Rham complex of Coo complex differential forms on the differ­ entiable manifold Xdlf underlying Xan. These variants tum out to be equivalent. Namely, one has canonical isomorphisms of hypercohomology: While the second isomorphism is a simple sheaf-theoretic consequence of the Poincare lemma, which identifies both vector spaces with the complex cohomology H (XtoP, C) of the topological space underlying X, the first isomorphism is a deeper result of A. Grothendieck, which shows in particular that the Betti numbers can be computed algebraically. This result has been generalized by P. Deligne to the case of nonconstant coeffi­ cients: for any algebraic vector bundle .M on X endowed with an integrable regular connection, one has canonical isomorphisms The notion of regular connection is a higher dimensional generalization of the classical notion of fuchsian differential equations (only regular singularities).


Book
Boundary cohomology of Shimura varieties, III: coherent cohomology on higher-rank boundary strata and applications to Hodge theory
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ISBN: 2856291074 Year: 2001 Publisher: Paris : Société Mathématique de France - SMF,

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Book
Symmetry types of hyperelliptic Riemann surfaces
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Year: 2001 Publisher: Paris : Société Mathématique de France - SMF,


Book
Albanese and Picard 1-motives
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ISBN: 2856291139 Year: 2001 Publisher: Paris : Société Mathématique de France - SMF,


Book
Opere
Author:
Year: 2001 Publisher: Palermo : Circolo matematico di Palermo,

Gorenstein liaison, complete intersection liaison invariants and unobstructedness
Authors: --- --- --- ---
ISBN: 0821827383 Year: 2001 Publisher: Providence, Rhode Island : American Mathematical Society,


Book
Plane algebraic curves
Authors: ---
ISSN: 15209121 ISBN: 0821821229 9780821821220 Year: 2001 Volume: 15 Publisher: Providence : American Mathematical Society,

Intuitive combinatorial topology
Authors: --- --- ---
ISBN: 0387951148 1441928820 1475756046 9780387951140 Year: 2001 Publisher: New York, NY : Springer,

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Topology is a relatively young and very important branch of mathematics. It studies properties of objects that are preserved by deformations, twistings, and stretchings, but not tearing. This book deals with the topology of curves and surfaces as well as with the fundamental concepts of homotopy and homology, and does this in a lively and well-motivated way. There is hardly an area of mathematics that does not make use of topological results and concepts. The importance of topological methods for different areas of physics is also beyond doubt. They are used in field theory and general relativity, in the physics of low temperatures, and in modern quantum theory. The book is well suited not only as preparation for students who plan to take a course in algebraic topology but also for advanced undergraduates or beginning graduates interested in finding out what topology is all about. The book has more than 200 problems, many examples, and over 200 illustrations.

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