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Preface | xiii | |
Symbols and Terms | xix | |
1 | Preliminaries | 1 |
1.1 | Preview | 1 |
A | It Takes Two Harmonic Functions | 3 |
B | Heat Flow | 6 |
C | A Geometric Rule | 9 |
D | Electrostatics | 10 |
E | Fluid Flow | 13 |
F | One Model, Many Applications | 14 |
Exercises | 15 | |
1.2 | Sets, Functions, and Visualization | 18 |
A | Terminology and Notation for Sets | 18 |
B | Terminology and Notation for Functions | 20 |
C | Functions from R to R | 25 |
D | Functions from R[superscript 2] to R | 27 |
E | Functions from R[superscript 2] to R[superscript 2] | 29 |
Exercises | 30 | |
1.3 | Structures on R[superscript 2], and Linear Maps from R[superscript 2] to R[superscript 2] | 34 |
A | The Real Line and the Plane | 34 |
B | Polar Coordinates in the Plane | 36 |
C | When Is a Mapping M: R[superscript 2] [right arrow] R[superscript 2] Linear? | 38 |
D | Visualizing Nonsingular Linear Mappings | 40 |
E | The Determinant of a Two-by-Two Matrix | 44 |
F | Pure Magnifications, Rotations, and Conjugation | 45 |
G | Conformal Linear Mappings | 46 |
Exercises | 48 | |
1.4 | Open Sets, Open Mappings, Connected Sets | 51 |
A | Distance, Interior, Boundary, Openness | 51 |
B | Continuity in Terms of Open Sets | 55 |
C | Open Mappings | 56 |
D | Connected Sets | 57 |
Exercises | 58 | |
1.5 | A Review of Some Calculus | 61 |
A | Integration Theory for Real-Valued Functions | 61 |
B | Improper Integrals, Principal Values | 63 |
C | Partial Derivatives | 66 |
D | Divergence and Curl | 68 |
Exercises | 70 | |
1.6 | Harmonic Functions | 71 |
A | The Geometry of Laplace's Equation | 71 |
B | The Geometry of the Cauchy-Riemann Equations | 72 |
C | The Mean Value Property | 73 |
D | Changing Variables in a Dirichlet or Neumann Problem | 76 |
Exercises | 77 | |
2 | Basic Tools | 83 |
2.1 | The Complex Plane | 83 |
A | The Definition of a Field | 83 |
B | Complex Multiplication | 84 |
C | Powers and Roots | 87 |
D | Conjugation | 89 |
E | Quotients of Complex Numbers | 90 |
F | When Is a Mapping L : C [right arrow] C Linear? | 91 |
G | Complex Equations for Lines and Circles | 92 |
H | The Reciprocal Map, and Reflection in the Unit Circle | 93 |
I | Reflections in Lines and Circles | 96 |
Exercises | 97 | |
2.2 | Visualizing Powers, Exponential, Logarithm, and Sine | 102 |
A | Powers of z | 103 |
B | Exponential and Logarithms | 104 |
C | Sin z | 106 |
D | The Cosine and Sine, and the Hyperbolic Cosine and Sine | 110 |
Exercises | 111 | |
2.3 | Differentiability | 115 |
A | Differentiability at a Point | 115 |
B | Differentiability in the Complex Sense: Holomorphy | 119 |
C | Finding Derivatives | 122 |
D | Picturing the Local Behavior of Holomorphic Mappings | 124 |
Exercises | 126 | |
2.4 | Sequences, Compactness, Convergence | 128 |
A | Sequences of Complex Numbers | 128 |
B | The Limit Superior of a Sequence of Reals | 131 |
C | Implications of Compactness | 133 |
D | Sequences of Functions | 134 |
Exercises | 135 | |
2.5 | Integrals Over Curves, Paths, and Contours | 138 |
A | Integrals of Complex-Valued Functions | 138 |
B | Curves | 138 |
C | Paths | 144 |
D | Pathwise Connected Sets | 147 |
E | Independence of Path and Morera's Theorem | 148 |
F | Goursat's Lemma | 150 |
G | The Winding Number | 153 |
H | Green's Theorem | 155 |
I | Irrotational and Incompressible Fluid Flow | 158 |
J | Contours | 161 |
Exercises | 162 | |
2.6 | Power Series | 166 |
A | Infinite Series | 166 |
B | The Geometric Series | 167 |
C | An Improved Root Test | 171 |
D | Power Series and the Cauchy-Hadamard Theorem | 172 |
E | Uniqueness of the Power Series Representation | 174 |
F | Integrals That Give Rise to Power Series | 178 |
Exercises | 180 | |
3 | The Cauchy Theory | 187 |
3.1 | Fundamental Properties of Holomorphic Functions | 188 |
A | Integral and Series Representations | 188 |
B | Eight Ways to Say "Holomorphic" | 193 |
C | Determinism | 193 |
D | Liouville's Theorem | 196 |
E | The Fundamental Theorem of Algebra | 196 |
F | Subuniform Convergence Preserves Holomorphy | 197 |
Exercises | 198 | |
3.2 | Cauchy's Theorem | 204 |
A | Cerny's 1976 Proof | 205 |
B | Simply Connected Sets | 208 |
C | Subuniform Boundedness, Subuniform Convergence | 209 |
3.3 | Isolated Singularities | 212 |
A | The Laurent Series Representation on an Annulus | 212 |
B | Behavior Near an Isolated Singularity in the Plane | 216 |
C | Examples: Classifying Singularities, Finding Residues | 219 |
D | Behavior Near a Singularity at Infinity | 225 |
E | A Digression: Picard's Great Theorem | 229 |
Exercises | 229 | |
3.4 | The Residue Theorem and the Argument Principle | 236 |
A | Meromorphic Functions and the Extended Plane | 236 |
B | The Residue Theorem | 239 |
C | Multiplicity and Valence | 242 |
D | Valence for a Rational Function | 243 |
E | The Argument Principle: Integrals That Count | 243 |
Exercises | 249 | |
3.5 | Mapping Properties | 251 |
Exercises | 259 | |
3.6 | The Riemann Sphere | 260 |
Exercises | 264 | |
4 | The Residue Calculus | 267 |
4.1 | Integrals of Trigonometric Functions | 268 |
Exercises | 270 | |
4.2 | Estimating Complex Integrals | 273 |
Exercises | 276 | |
4.3 | Integrals of Rational Functions Over the Line | 277 |
Exercises | 280 | |
4.4 | Integrals Involving the Exponential | 282 |
A | Integrals Giving Fourier Transforms | 286 |
Exercises | 290 | |
4.5 | Integrals Involving a Logarithm | 293 |
Exercises | 301 | |
4.6 | Integration on a Riemann Surface | 302 |
A | Mellin Transforms | 306 |
Exercises | 307 | |
4.7 | The Inverse Laplace Transform | 309 |
Exercises | 315 | |
5 | Boundary Value Problems | 317 |
5.1 | Examples | 318 |
A | Easy Problems | 318 |
B | The Conformal Mapping Method | 323 |
Exercises | 326 | |
5.2 | The Mobius Maps | 327 |
Exercises | 338 | |
5.3 | Electric Fields | 341 |
A | A Point Charge in 3-Space | 341 |
B | Uniform Charge on One or More Long Wires | 342 |
C | Examples with Bounded Potentials | 347 |
Exercises | 350 | |
5.4 | Steady Flow of a Perfect Fluid | 350 |
Exercises | 354 | |
5.5 | Using the Poisson Integral to Obtain Solutions | 355 |
A | The Poisson Integral on a Disk | 355 |
B | Solutions on the Disk by the Poisson Integral | 358 |
C | Geometry of the Poisson Integral | 361 |
D | Harmonic Functions and the Mean Value Property | 363 |
E | The Neumann Problem on a Disk | 364 |
F | The Poisson Integral on a Half-Plane, and on Other Domains | 365 |
Exercises | 366 | |
5.6 | When Is the Solution Unique? | 368 |
Exercises | 370 | |
5.7 | The Schwarz Reflection Principle | 370 |
5.8 | Schwarz-Christoffel Formulas | 374 |
A | Triangles | 375 |
B | Rectangles and Other Polygons | 385 |
C | Generalized Polygons | 389 |
Exercises | 390 | |
6 | Lagniappe | 393 |
6.1 | Dixon's 1971 Proof of Cauchy's Theorem | 394 |
6.2 | Runge's Theorem | 398 |
Exercises | 403 | |
6.3 | The Riemann Mapping Theorem | 404 |
Exercises | 405 | |
6.4 | The Osgood-Taylor-Caratheodory Theorem | 406 |
References | 413 | |
Index | 419 |
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Add Complex Analysis, Vol. 1, Recent decades have seen profound changes in the way we understand complex analysis. This new work presents a much-needed modern treatment of the subject, incorporating the latest developments and providing a rigorous yet accessible introduction to the co, Complex Analysis, Vol. 1 to the inventory that you are selling on WonderClubX
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Add Complex Analysis, Vol. 1, Recent decades have seen profound changes in the way we understand complex analysis. This new work presents a much-needed modern treatment of the subject, incorporating the latest developments and providing a rigorous yet accessible introduction to the co, Complex Analysis, Vol. 1 to your collection on WonderClub |