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Projective Geometry and Formal Geometry
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Catalogue Information
Field name
Details
Dewey Class
516.35
Title
Projective Geometry and Formal Geometry ([EBook] /) / by Lucian Bădescu.
Author
Bădescu, Lucian
Other name(s)
SpringerLink (Online service)
Publication
Basel : : Birkhäuser Basel : : Imprint: Birkhäuser, , 2004.
Physical Details
XIV, 214 p. : online resource.
Series
Monografie Matematyczne, Instytut Matematyczny Polskiej Akademii Nauk (IMPAN)
; 65
ISBN
9783034879361
Summary Note
The aim of this monograph is to introduce the reader to modern methods of projective geometry involving certain techniques of formal geometry. Some of these methods are illustrated in the first part through the proofs of a number of results of a rather classical flavor, involving in a crucial way the first infinitesimal neighbourhood of a given subvariety in an ambient variety. Motivated by the first part, in the second formal functions on the formal completion X/Y of X along a closed subvariety Y are studied, particularly the extension problem of formal functions to rational functions. The formal scheme X/Y, introduced to algebraic geometry by Zariski and Grothendieck in the 1950s, is an analogue of the concept of a tubular neighbourhood of a submanifold of a complex manifold. It is very well suited to study the given embedding Y\subset X. The deep relationship of formal geometry with the most important connectivity theorems in algebraic geometry, or with complex geometry, is also studied. Some of the formal methods are illustrated and applied to homogeneous spaces. The book contains a lot of results obtained over the last thirty years, many of which never appeared in a monograph or textbook. It addresses to algebraic geometers as well as to those interested in using methods of algebraic geometry.:
Contents note
I Special Chapters of Projective Geometry -- 1 Extensions of Projective Varieties -- 2 Proof of Theorem 1.3 -- 3 Counterexamples and Further Consequences -- 4 The Zak Map of a Curve. Gaussian Maps -- 5 Quasi-homogeneous Singularities and Projective Geometry -- 6 A Characterization of Linear Subspaces -- 7 Cohomological Dimension and Connectedness Theorems -- 8 A Problem of Complete Intersection -- II Formal Functions in Algebraic Geometry -- 9 Basic Definitions and Results -- 10 Lefschetz Theory and Meromorphic Functions -- 11 Connectedness and Formal Functions -- 12 Further Results on Formal Functions -- 13 Formal Functions on Homogeneous Spaces -- 14 Quasi-lines on Projective Manifolds -- Glossary of Notation.
System details note
Online access to this digital book is restricted to subscription institutions through IP address (only for SISSA internal users)
Internet Site
http://dx.doi.org/10.1007/978-3-0348-7936-1
Links to Related Works
Subject References:
Algebraic Geometry
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Functions of a Complex Variable
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Functions of complex variables
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Geometry
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Global Analysis and Analysis on Manifolds
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Global analysis (Mathematics)
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Manifolds (Mathematics)
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Mathematics
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Authors:
Bădescu, Lucian
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Corporate Authors:
SpringerLink (Online service)
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Series:
Monografie Matematyczne, Instytut Matematyczny Polskiej Akademii Nauk (IMPAN)
.
Classification:
516.35
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