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Morse Theory Of Gradient Flows, Concavity And Complexity On Manifolds With Boundary [Kõva köide]

(Massachusetts Inst Of Tech, Usa)
  • Formaat: Hardback, 516 pages
  • Ilmumisaeg: 30-Aug-2019
  • Kirjastus: World Scientific Publishing Co Pte Ltd
  • ISBN-10: 981436875X
  • ISBN-13: 9789814368759
Teised raamatud teemal:
  • Formaat: Hardback, 516 pages
  • Ilmumisaeg: 30-Aug-2019
  • Kirjastus: World Scientific Publishing Co Pte Ltd
  • ISBN-10: 981436875X
  • ISBN-13: 9789814368759
Teised raamatud teemal:
This monograph is an account of the author's investigations of gradient vector flows on compact manifolds with boundary. Many mathematical structures and constructions in the book fit comfortably in the framework of Morse Theory and, more generally, of the Singularity Theory of smooth maps.The geometric and combinatorial structures, arising from the interactions of vector flows with the boundary of the manifold, are surprisingly rich. This geometric setting leads organically to many encounters with Singularity Theory, Combinatorics, Differential Topology, Differential Geometry, Dynamical Systems, and especially with the boundary value problems for ordinary differential equations. This diversity of connections animates the book and is the main motivation behind it.The book is divided into two parts. The first part describes the flows in three dimensions. It is more pictorial in nature. The second part deals with the multi-dimensional flows, and thus is more analytical. Each of the nine chapters starts with a description of its purpose and main results. This organization provides the reader with independent entrances into different chapters.
Preface vii
Acknowledgments xi
Flows in 2D and 3D 1(2)
1 A Prelude in 2D: Flows in Flatland
3(24)
1.1 In this chapter
3(1)
1.2 On Morse Theory on surfaces with boundary and beyond
3(6)
1.3 Vector fields and Morse stratifications on surfaces
9(4)
1.4 Concavity and complexity of vector flows in 2D
13(3)
1.5 On spaces of vector fields
16(1)
1.6 On the graph-theoretical approach to the concavity of traversing fields in 2D
17(8)
1.7 Combinatorics of tangency for traversing flows in 2D
25(2)
2 Vector Fields, Morse Stratifications, and Gradient Spines of 3-folds
27(58)
2.1 In this chapter
27(1)
2.2 Morse stratifications on 3-folds with boundary
28(6)
2.3 Surgery on Morse stratifications of 3-folds
34(3)
2.4 Morse strata, convexity, and concavity
37(9)
2.5 Cascades, 2D-spines, and concavity
46(24)
2.6 Abstract gradient spines
70(15)
3 Concavity and Complexity of Traversing Flows on 3-folds
85(60)
3.1 In this chapter
85(1)
3.2 Combinatorial and gradient complexities of 3-folds
86(25)
3.3 Which spines are gradient?
111(9)
3.4 The 3-folds of gradient complexity 0 and 1
120(25)
4 Deformations of Traversing Flows in 3D and Modifications of Gradient Spines
145(66)
4.1 In this chapter
145(1)
4.2 On the combinatorics of 3D and 4D traversing vector flows
146(2)
4.3 One-parameter families of traversing flows on 3-folds
148(3)
4.4 Local algebraic models of traversally generic 4D-flows and their 3D-slices
151(3)
4.5 Algebraic models of elementary surgery for truly generic deformations of traversing 3D-flows
154(7)
4.6 How truly generic deformations of traversing vector fields affect the gradient spines
161(21)
4.7 Philips' Theorem and the spaces of vector fields in 3D
182(10)
4.8 Eliminating cusps by surgery on traversing vector fields, while preserving their complexity
192(7)
4.9 On the spaces of traversing vector fields in 3D with no cusps
199(12)
High-dimensional Flows
211(280)
5 Stratified Convexity and Concavity of Flows on Manifolds with Boundary
213(54)
5.1 In this chapter
213(1)
5.2 Revisiting the Morse stratification {∂+j X(v)}
214(12)
5.3 Deforming the Morse stratification
226(9)
5.4 Boundary convexity and concavity of vector fields
235(15)
5.5 Morse stratifications of the boundary 3-convex and 3-concave vector fields
250(10)
5.6 On the concave traversing flows whose trajectories are of the combinatorial types (11) and (121) only
260(7)
6 Traversally Generic and Versal Flows: Semi-algebraic Models of Tangency
267(94)
6.1 In this chapter
267(1)
6.2 Morin's local models: how nonsingular flows interact with boundary
268(7)
6.3 Traversally generic and versal vector fields
275(50)
6.4 On the trajectory spaces of traversing and traversally generic flows
325(24)
6.5 The ball-based Origami theorem for traversally generic flows
349(5)
6.6 A glimpse of holography
354(7)
7 Combinatorics of Tangency: the Stratified Spaces of Real Polynomials
361(44)
7.1 In this chapter
361(1)
7.2 Bifurcations of the real polynomial divisors: the universal combinatorics of tangency for traversing flows
361(11)
7.3 On stratified spaces
372(1)
7.4 Spaces of real univariate polynomials, stratified by the combinatorial types of their real divisors
372(15)
7.5 Combinatorics of multi-tangent trajectories
387(18)
8 Complexity of Shadows and Traversing Flows in Terms of the Simplicial Volume
405(64)
8.1 In this chapter
405(2)
8.2 On spines and cospines
407(4)
8.3 Shadows of manifolds with boundary
411(2)
8.4 Simplicial semi-norms, amenable localization, and complexity of shadows
413(27)
8.5 Complexity of traversally generic vector fields and the simplicial semi-norms
440(24)
8.6 Complexity of the fundamental group as a lower bound for the complexity of traversing flows
464(5)
9 The Burnside Ring-valued Morse Formula for Equivariant Vector Fields
469(22)
9.1 In this chapter
469(1)
9.2 G-equivariant vector fields and Morse stratifications
470(5)
9.3 Equivariant Morse formula for vector fields
475(7)
9.4 Polynomial vector fields in polynomial domains
482(4)
9.5 Gottlieb's and Gauss-Bonnet's equivariant formulas
486(3)
9.6 Speculations about differently flavored Burnside rings
489(2)
Bibliography 491