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线性代数与射影几何/Linear algebra and projective geometry

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线性代数与射影几何/Linear algebra and projective geometry

最 低 价:¥154.20

定 价:¥171.31

作 者:ReinholdBaer 著

出 版 社:Oversea Publishing House

出版时间:2005-8-1

I S B N:9780486445656

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内容简介

Geared toward upper-level undergraduates and graduate students, this text establishes that projective geometry and linear algebra are essen-tially identical. The supporting evidence consists of theorems offering an algebraic demonstration of certain geometric concepts. These focus on the representation of projective geometries by linear manifolds, of projectivities by semilinear transformations, of collineations by linear transformations, and of dualities by semilinear forms. These theorems lead to a reconstruc-tion of the geometry that constituted the discussion's starting point, within algebraic structures such as the endomorphism ring of the underlying manifold or the full linear group.
Restricted to topics of an algebraic nature, the text shows how far purely algebraic methods may extend. It assumes only a familiarity with the basic concepts and terms of algebra. The methods of transfinite set theory frequently recur, and for readers unfamiliar with this theory, the concepts and principles appear in a special appendix.

作者简介

目录

PREFACE
CHAPTER I. MOTIVATION
I. 1. The Three-Dimensional Afiine Space as Prototype of Linear Manifolds
I. 2. The Real Projective Plane as Prototype of the Lat-tice of Subspaces of a Linear Manifold
CHAPTER II. THE BASIC PROPERTIES OF A LINEAR MANIFOLD.
II. 1. Dedekind's Law and the Principle of Complemen-tation
II. 2. Linear Dependence and Independence; Rank
II. 3. The Adjoint Space
Appendix I. Application to Systems of Linear Homogeneous Equations
Appendix II. Paired Spaces
II. 4. The Adjunct Space
Appendix III. Fano's Postulate
CHAPTER III. PROJECTIVITIES
III. I. Representation of Projectivitics by Semi-linear Transformations
Appendix I. Projective Construction of the Homothetic Group
III. 2. The Group of Collineations
III. 3. The Second Fundamental Theorem of Projective Geometry
Appendix II. The Theorem of Pappus
III. 4. The Projective Geo etry of a Line in Space; Cross Ratios
Appendix III. Projectivc Ordering of a Space
CHAPTER IV. DUALITIES
IV. I. Existence of Dualitics; Semi-bilinear Fornls
IV. 2. Null Systems
IV. 3. Representation of Polarities
IV. 4. Isotropic and Non-isotropic Subspaces of a Polar-ity; Index and Nullity
Appendix I. Sylvester's Theorem of Incrtia
Appendix II. Projective Relations between Lines Induced by Polarities
Appendix III. The Theorem of Pascal
IV. 5. The Group of a Polarity
Appendix IV. The Polarities with Transitive Group
IV. 6. The Non-isotropic Subspaces of a Polarity
CHAPTER V. THE RING OF A LINEAR MANIFOLD
V. 1. Definition of the Endomorphism Ring
V. 2. The Three Cornered Galois Theory
V. 3. The Finitely Generated Ideals
V. 4. The Isomorphisms of the Endomorphism Ring
V. 5. The Anti-isomorphisms of the Endomorphism Ring
Appendix I. The Two-sided Ideals of the Endomorphism Ring
CHAPTER VI. TttE GROUPS OF A LINEAR MANIFOLD
VI. 1. The Center of the Full Linear Group
VI. 2. First and Second Centralizer of an Involution
VI. 3. Transformations of Class 2
VI. 4. Cosets of Involutions
VI. 5. The Isomorphisms of the Full Linear Group
Appendix I. Groups of Involutions
VI. 6.CHAracterization of the Full Linear Group within the Group of Semi-linear Transformations
VI. 7. The Isomorphisms of the Group of Semi-linear Transformations
CHAPTLR VII. INTERNAL CHARACTERIZATION OF THE SYSTEM OF SUBSPACES
A Short Bibliography of the Principles of Geo-metry
VII. 1. Basic Concepts, Postulates and Elementary Pro-perties
VII. 2. Dependent and Independent Points
VII. 3. The Theorem of Desargues
VII. 4. The Imbedding Theorem
VII. 5. The Group of a Hyperplane
VII. 6. The Representation Theorem
VII. 7. The Principles of Affine Geometry
AppenDIX S. A SURVEY OF THE BASIC CONCEPTS AND PRIN-CIPLES OF THE THEORY OF SETS
A Selection of Suitable Introductions into the Theory of Sets
Sets and Subsets
Mappings
Partially Ordered Sets
Well Ordering
Ordinal Numbers
Cardinal Numbers.
Bibliography
Index

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