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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).
Modules (Algebra) --- Differential algebra --- Arithmetical algebraic geometry --- Géométrie algébrique arithmétique --- Geometry. --- Mathematics --- Euclid's Elements --- Géométrie algébrique arithmétique. --- Geometrie algebrique --- Cohomologie
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Geometry, Algebraic --- Géométrie algébrique --- Hodge theory. --- Hodge, Théorie de.
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Geometry, Algebraic. --- Géométrie algébrique --- Hodge theory. --- Hodge, Théorie de --- Analytic spaces. --- Espaces analytiques --- Complex manifolds. --- Variétés complexes --- Singularities (Mathematics) --- Singularités (mathématiques) --- Geometrie algebrique --- Cohomologie --- Geometrie algebrique --- Cohomologie
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Mathematiques --- Histoire des mathematiques --- Histoire des mathematiques --- Geometrie algebrique --- Oeuvres reunies --- 19e siecle --- 20e siecle --- Mathematiques --- Histoire des mathematiques --- Histoire des mathematiques --- Geometrie algebrique --- Oeuvres reunies --- 19e siecle --- 20e siecle
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Algebraic geometry --- Determinantal varieties. --- Schemes (Algebraic geometry) --- Schémas (géométrie algébrique) --- Liaison theory (Mathematics) --- Liaison, Théorie de la --- Determinantal varieties --- Geometry, Algebraic --- Linkage theory (Mathematics) --- Algebraic varieties --- Liaison, Théorie de la.
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Curves, Algebraic. --- 512.77 --- Algebraic curves. Algebraic surfaces. Three-dimensional algebraic varieties --- 512.77 Algebraic curves. Algebraic surfaces. Three-dimensional algebraic varieties --- Curves, Algebraic --- Algebraic curves --- Algebraic varieties --- Courbes planes --- Geometrie algebrique --- Courbes algebriques
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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.
Combinatorial topology. --- Topologie combinatoire --- Combinatorial topology --- Variétés topologiques --- Topological manifolds --- Variétés (mathématiques) --- Manifolds (Mathematics) --- Algebraic topology. --- Algebraic geometry. --- Fluids. --- Algebraic Topology. --- Algebraic Geometry. --- Fluid- and Aerodynamics. --- Hydraulics --- Mechanics --- Physics --- Hydrostatics --- Permeability --- Algebraic geometry --- Geometry --- Topology --- Variétés (mathématiques) --- Variétés topologiques --- Topological manifolds. --- Geometrie algebrique --- Varietes algebriques
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