Introduction to Singularities and Deformations

Introduction to Singularities and Deformations PDF Author: Gert-Martin Greuel
Publisher: Springer Science & Business Media
ISBN: 3540284192
Category : Mathematics
Languages : en
Pages : 482

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Book Description
Singularity theory is a young, rapidly-growing topic with connections to algebraic geometry, complex analysis, commutative algebra, representations theory, Lie groups theory and topology, and many applications in the natural and technical sciences. This book presents the basic singularity theory of analytic spaces, including local deformation theory and the theory of plane curve singularities. It includes complete proofs.

Introduction to Singularities

Introduction to Singularities PDF Author: Shihoko Ishii
Publisher: Springer
ISBN: 443155081X
Category : Mathematics
Languages : en
Pages : 227

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Book Description
This book is an introduction to singularities for graduate students and researchers. It is said that algebraic geometry originated in the seventeenth century with the famous work Discours de la méthode pour bien conduire sa raison, et chercher la vérité dans les sciences by Descartes. In that book he introduced coordinates to the study of geometry. After its publication, research on algebraic varieties developed steadily. Many beautiful results emerged in mathematicians’ works. Most of them were about non-singular varieties. Singularities were considered “bad” objects that interfered with knowledge of the structure of an algebraic variety. In the past three decades, however, it has become clear that singularities are necessary for us to have a good description of the framework of varieties. For example, it is impossible to formulate minimal model theory for higher-dimensional cases without singularities. Another example is that the moduli spaces of varieties have natural compactification, the boundaries of which correspond to singular varieties. A remarkable fact is that the study of singularities is developing and people are beginning to see that singularities are interesting and can be handled by human beings. This book is a handy introduction to singularities for anyone interested in singularities. The focus is on an isolated singularity in an algebraic variety. After preparation of varieties, sheaves, and homological algebra, some known results about 2-dim ensional isolated singularities are introduced. Then a classification of higher-dimensional isolated singularities is shown according to plurigenera and the behavior of singularities under a deformation is studied.

Deformations of Algebraic Schemes

Deformations of Algebraic Schemes PDF Author: Edoardo Sernesi
Publisher: Springer Science & Business Media
ISBN: 3540306153
Category : Mathematics
Languages : en
Pages : 343

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Book Description
This account of deformation theory in classical algebraic geometry over an algebraically closed field presents for the first time some results previously scattered in the literature, with proofs that are relatively little known, yet relevant to algebraic geometers. Many examples are provided. Most of the algebraic results needed are proved. The style of exposition is kept at a level amenable to graduate students with an average background in algebraic geometry.

Singularities of the Minimal Model Program

Singularities of the Minimal Model Program PDF Author: János Kollár
Publisher: Cambridge University Press
ISBN: 1107035341
Category : Mathematics
Languages : en
Pages : 381

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Book Description
An authoritative reference and the first comprehensive treatment of the singularities of the minimal model program.

Isomonodromic Deformations and Frobenius Manifolds

Isomonodromic Deformations and Frobenius Manifolds PDF Author: Claude Sabbah
Publisher: Springer Science & Business Media
ISBN: 1848000545
Category : Mathematics
Languages : en
Pages : 290

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Book Description
Based on a series of graduate lectures, this book provides an introduction to algebraic geometric methods in the theory of complex linear differential equations. Starting from basic notions in complex algebraic geometry, it develops some of the classical problems of linear differential equations. It ends with applications to recent research questions related to mirror symmetry. The fundamental tool used is that of a vector bundle with connection. The book includes complete proofs, and applications to recent research questions. Aimed at graduate students and researchers, the book assumes some familiarity with basic complex algebraic geometry.

Deformation Theory

Deformation Theory PDF Author: Robin Hartshorne
Publisher: Springer Science & Business Media
ISBN: 1441915966
Category : Mathematics
Languages : en
Pages : 241

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Book Description
The basic problem of deformation theory in algebraic geometry involves watching a small deformation of one member of a family of objects, such as varieties, or subschemes in a fixed space, or vector bundles on a fixed scheme. In this new book, Robin Hartshorne studies first what happens over small infinitesimal deformations, and then gradually builds up to more global situations, using methods pioneered by Kodaira and Spencer in the complex analytic case, and adapted and expanded in algebraic geometry by Grothendieck. The author includes numerous exercises, as well as important examples illustrating various aspects of the theory. This text is based on a graduate course taught by the author at the University of California, Berkeley.

Mixed Hodge Structures and Singularities

Mixed Hodge Structures and Singularities PDF Author: Valentine S. Kulikov
Publisher: Cambridge University Press
ISBN: 9780521620604
Category : Mathematics
Languages : en
Pages : 210

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Book Description
This vital work is both an introduction to, and a survey of singularity theory, in particular, studying singularities by means of differential forms. Here, some ideas and notions that arose in global algebraic geometry, namely mixed Hodge structures and the theory of period maps, are developed in the local situation to study the case of isolated singularities of holomorphic functions. The author introduces the Gauss-Manin connection on the vanishing cohomology of a singularity, that is on the cohomology fibration associated to the Milnor fibration, and draws on the work of Brieskorn and Steenbrink to calculate this connection, and the limit mixed Hodge structure. This is an excellent resource for all researchers in singularity theory, algebraic or differential geometry.

Sheaves in Topology

Sheaves in Topology PDF Author: Alexandru Dimca
Publisher: Springer Science & Business Media
ISBN: 3642188680
Category : Mathematics
Languages : en
Pages : 253

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Book Description
Constructible and perverse sheaves are the algebraic counterpart of the decomposition of a singular space into smooth manifolds. This introduction to the subject can be regarded as a textbook on modern algebraic topology, treating the cohomology of spaces with sheaf (as opposed to constant) coefficients. The author helps readers progress quickly from the basic theory to current research questions, thoroughly supported along the way by examples and exercises.

Frobenius Manifolds and Moduli Spaces for Singularities

Frobenius Manifolds and Moduli Spaces for Singularities PDF Author: Claus Hertling
Publisher: Cambridge University Press
ISBN: 9780521812962
Category : Mathematics
Languages : en
Pages : 292

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Book Description
This book presents the theory of Frobenius manifolds, as well as all the necessary tools and several applications.

Singularities of Differentiable Maps

Singularities of Differentiable Maps PDF Author: V.I. Arnold
Publisher: Springer Science & Business Media
ISBN: 1461251540
Category : Mathematics
Languages : en
Pages : 390

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Book Description
... there is nothing so enthralling, so grandiose, nothing that stuns or captivates the human soul quite so much as a first course in a science. After the first five or six lectures one already holds the brightest hopes, already sees oneself as a seeker after truth. I too have wholeheartedly pursued science passionately, as one would a beloved woman. I was a slave, and sought no other sun in my life. Day and night I crammed myself, bending my back, ruining myself over my books; I wept when I beheld others exploiting science fot personal gain. But I was not long enthralled. The truth is every science has a beginning, but never an end - they go on for ever like periodic fractions. Zoology, for example, has discovered thirty-five thousand forms of life ... A. P. Chekhov. "On the road" In this book a start is made to the "zoology" of the singularities of differentiable maps. This theory is a young branch of analysis which currently occupies a central place in mathematics; it is the crossroads of paths leading from very abstract corners of mathematics (such as algebraic and differential geometry and topology, Lie groups and algebras, complex manifolds, commutative algebra and the like) to the most applied areas (such as differential equations and dynamical systems, optimal control, the theory of bifurcations and catastrophes, short-wave and saddle-point asymptotics and geometrical and wave optics).