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Equimultiplicity and blowing up : an algebraic study

Author: Manfred Hermann; Shin Ikeda; B Moonen; Ulrich Orbanz
Publisher: Berlin [etc.] : Springer-Verlag, [1988]
Edition/Format:   Print book : EnglishView all editions and formats
Database:WorldCat
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With an Appendix by B.Moonen

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Document Type: Book
All Authors / Contributors: Manfred Hermann; Shin Ikeda; B Moonen; Ulrich Orbanz
ISBN: 354015289X 9783540152897 038715289X 9780387152899
OCLC Number: 642154869
Description: XVII, 629 p. ; 25 cm.
Contents: I - Review of Multiplicity Theory.- 1 The multiplicity symbol.- 2 Hilbert functions.- 3 Generalized multiplicities and Hilbert functions.- 4 Reductions and integral closure of ideals.- 5 Faithfully flat extensions.- 6 Projection formula and criterion for multiplicity one.- 7 Examples.- II - Z-Graded Rings and Modules.- 8 Associated graded rings and Rees algebras.- 9 Dimension.- 10 Homogeneous parameters.- 11 Regular sequences on graded modules.- 12 Review on blowing up.- 13 Standard bases.- 14 Examples.- Appendix - Homogeneous subrings of a homogeneous ring.- III - Asymptotic Sequences and Quasi-Unmixed Rings.- 15 Auxiliary results on integral dependence of ideals.- 16 Associated primes of the integral closure of powers of an ideal.- 17 Asymptotic sequences.- 18 Quasi-unmixed rings.- 19 The theorem of Rees-Boger.- IV - Various Notions of Equimultiple and Permissible Ideals.- 20 Reinterpretation of the theorem of Rees-Boger.- 21 Hironaka-Grothendieck homomorphism.- 22 Projective normal flatness and numerical characterization of permissibility.- 23 Hierarchy of equimultiplicity and permissibility.- 24 Open conditions and transitivity properties.- V - Equimultiplicity and Cohen-Macaulay Property of Blowing Up Rings.- 25 Graded Cohen-Macaulay rings.- 26 The case of hypersurfaces.- 27 Transitivity of Cohen-Macaulayness of Rees rings.- Appendix (K. Yamagishi and U. Orbanz) - Homogeneous domains of minimal multiplicity.- VI - Certain Inequalities and Equalities of Hilbert Functions and Multiplicities.- 28 Hyperplane sections.- 29 Quadratic transformations.- 30 Semicontinuity.- 31 Permissibility and blowing up of ideals.- 32 Transversal ideals and flat families.- VII - Local Cohomology and Duality of Graded Rings.- 33 Review on graded modules.- 34 Matlis duality.- I: Local case.- II: Graded case.- 35 Local cohomology.- 36 Local duality for graded rings.- Appendix - Characterization of local Gorenstein-rings by its injective dimension.- VIII - Generalized Cohen-Macaulay Rings and Blowing Up.- 37 Finiteness of local cohomology.- 38 Standard system of parameters.- 39 The computation of local cohomology of generalized Cohen-Macaulay rings.- 40 Blowing up of a standard system of parameters.- 41 Standard ideals on Buchsbaum rings.- 42 Examples.- IX - Applications of Local Cohomology to the Cohen-Macaulay Behaviour of Blowing Up Rings.- 43 Generalized Cohen-Macaulay rings with respect to an ideal.- 44 The Cohen-Macaulay property of Rees algebras.- 45 Rees algebras of m-primary ideals.- 46 The Rees algebra of parameter ideals.- 47 The Rees algebra of powers of parameter ideals.- 48 Applications to rings of low multiplicity.- Examples.- Appendix (B. Moonen) - Geometric Equimultiplicity.- I. Local Complex Analytic Geometry.- 1. Local analytic algebras.- 1.1. Formal power series.- 1.2. Convergent power series.- 1.3. Local analytic k-algebras.- 2. Local Weierstrass Theory I: The Division Theorem.- 2.1. Ordering the monomials.- 2.2. Monomial ideals and leitideals.- 2.3. The Division Theorem.- 2.4. Division with respect to an ideal; standard bases.- 2.5. Applications of standard bases: the General Weierstrass Preparation Theorem and the Krull Intersection Theorem.- 2.6. The classical Weierstrass Theorems.- 3. Complex spaces and the Equivalence Theorem.- 3.1. Complex spaces.- 3.3. The Equivalence Theorem.- 3.4. The analytic spectrum.- 4. Local Weierstrass Theory II: Finite morphisms.- 4.1. Finite morphisms.- 4.2. Weierstrass maps.- 4.3. The Finite Mapping Theorem.- 4.4. The Integrality Theorem.- 5. Dimension and Nullstellensatz.- 5.1. Local dimension.- 5.2. Active elements and the Active Lemma.- 5.3. The Ruckert Nullstellensatz.- 5.4. Analytic sets and local decomposition.- 6. The Local Representation Theorem for comple space-germs (Noether normalization).- 6.1. Openness and dimension.- 6.2. Geometric interpretation of the local dimension and of a system of parameters; algebraic Noether normalization.- 6.3. The Local Representation Theorem; geometric Noether normalization.- 7. Coherence.- 7.1. Coherent sheaves.- 7.2. Nonzerodivisors.- 7.3. Purity of dimension and local decomposition.- 7.4. Reduction.- II. Geometric Multiplicity.- 1. Compact Stein neighbourhoods.- 1.1. Coherent sheaves on closed subsets.- 1.2. Stein subsets.- 1.3. Compact Stein subsets and the Flatness Theorem.- 1.4. Existence of compact Stein neighbourhoods.- 2. Local mapping degree.- 2.1. Local decomposition revisited.- 2.2. Local mapping degree.- 3. Geometric multiplicity.- 3.1. The tangent cone.- 3.2. Multiplicity.- 4. The geometry of Samuel multiplicity.- 4.1. Degree of a projective variety.- 4.2. Hilbert functions.- 4.3. A generalization.- 4.4. Samuel multiplicity.- 5. Algebraic multiplicity.- 5.1. Algebraic degree.- 5.2. Algebraic multiplicity.- III. Geometric Equimultiplicity.- 1. Normal flatness and pseudoflatness.- 1.1. Generalities from Complex Analytic Geometry.- 1.2. The analytic and projective analytic spectrum.- 1.3. Flatness of admissible graded algebras.- 1.4 The normal cone, normal flatness, and normal pseudoflatness.- 2. Geometric equimultiplicity along a smooth subspace.- 2.1. Zariski equimultiplicity.- 2.2. The Hironaka-Schickhoff Theorem.- 3. Geometric equimultiplicity along a general subspace.- 3.1. Zariski equimultiplicity.- 3.2. Normal pseudoflatness.- References.- References - Chapter I.- References - Chapter II.- References - Appendix Chapter II.- References - Chapter III.- References - Chapter IV.- References - Chapter V.- References - Appendix Chapter V.- References - Chapter VI.- References - Chapter VII.- References - Chapter VIII.- References - Chapter IX.- Bibliography to the Appendix Geometric Equimultiplicity.- General Index.
Responsibility: M. Hermann, S. Ikeda, U. Orbanz ; with an appendix by B. Moonen.

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