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Title:
The theory of differential equations : classical and qualitative
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Upper Saddle River, NJ : Pearson Education, 2004
ISBN:
9780131020269
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30000010124576 QA431 K44 2004 Open Access Book Book
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Summary

Summary

Designed for second or a first honours course in differential equations, this book introduces many of the important topics associated with modern and classical approaches to ordinary differential equations.


Table of Contents

Prefacep. ix
Chapter 1 First-Order Differential Equationsp. 1
1.1 Basic Resultsp. 1
1.2 First-Order Linear Equationsp. 4
1.3 Phase Line Diagramsp. 6
1.4 Bifurcationp. 11
1.5 Exercisesp. 15
Chapter 2 Linear Systemsp. 20
2.1 Introductionp. 20
2.2 The Vector Equation x' = A(t)xp. 24
2.3 The Matrix Exponential Functionp. 40
2.4 Induced Matrix Normp. 54
2.5 Floquet Theoryp. 60
2.6 Exercisesp. 72
Chapter 3 Autonomous Systemsp. 81
3.1 Introductionp. 81
3.2 Phase Plane Diagramsp. 84
3.3 Phase Plane Diagrams for Linear Systemsp. 90
3.4 Stability of Nonlinear Systemsp. 101
3.5 Linearization of Nonlinear Systemsp. 107
3.6 Existence and Nonexistence of Periodic Solutionsp. 114
3.7 Three-Dimensional Systemsp. 127
3.8 Differential Equations and Mathematicap. 138
3.9 Exercisesp. 142
Chapter 4 Perturbation Methodsp. 153
4.1 Introductionp. 153
4.2 Periodic Solutionsp. 164
4.3 Singular Perturbationsp. 170
4.4 Exercisesp. 179
Chapter 5 The Self-Adjoint Second-Order Differential Equationp. 185
5.1 Basic Definitionsp. 185
5.2 An Interesting Examplep. 190
5.3 Cauchy Function and Variation of Constants Formulap. 192
5.4 Sturm-Liouville Problemsp. 197
5.5 Zeros of Solutions and Disconjugacyp. 205
5.6 Factorizations and Recessive and Dominant Solutionsp. 213
5.7 The Riccati Equationp. 222
5.8 Calculus of Variationsp. 234
5.9 Green's Functionsp. 244
5.10 Exercisesp. 264
Chapter 6 Linear Differential Equations of Order np. 272
6.1 Basic Resultsp. 272
6.2 Variation of Constants Formulap. 274
6.3 Green's Functionsp. 278
6.4 Factorizations and Principal Solutionsp. 288
6.5 Adjoint Equationp. 294
6.6 Exercisesp. 298
Chapter 7 BVPs for Nonlinear Second-Order DEsp. 300
7.1 Contraction Mapping Theorem (CMT)p. 300
7.2 Application of the CMT to a Forced Equationp. 302
7.3 Applications of the CMT to BVPsp. 304
7.4 Lower and Upper Solutionsp. 316
7.5 Nagumo Conditionp. 325
7.6 Exercisesp. 331
Chapter 8 Existence and Uniqueness Theoremsp. 335
8.1 Basic Resultsp. 335
8.2 Lipschitz Condition and Picard-Lindelof Theoremp. 338
8.3 Equicontinuity and the Ascoli-Arzela Theoremp. 346
8.4 Cauchy-Peano Theoremp. 348
8.5 Extendability of Solutionsp. 353
8.6 Basic Convergence Theoremp. 359
8.7 Continuity of Solutions with Respect to ICsp. 362
8.8 Kneser's Theoremp. 366
8.9 Differentiating Solutions with Respect to ICsp. 369
8.10 Maximum and Minimum Solutionsp. 377
8.11 Exercisesp. 386
Solutions to Selected Problemsp. 393
Bibliographyp. 405
Indexp. 409