Introduction to the Theory of Analytic Functions

Front Cover
Macmillan and Company, limited, 1898 - Analytic functions - 336 pages
 

Contents

The axis of real numbers
12
Imaginary numbers and the axis of imaginary numbers
13
Strokes
15
Complex numbers and the points of a plane
16
Absolute value and amplitude of x+in
17
Addition of two complex numbers
18
Ratio and multiplication 22303
20
The nth roots of unity
22
The nth power and nth root of a stroke
23
To find the point which divides in a given ratio r the stroke from a₁ to aq 24 23005
24
The centroid of a system of points
25
Examples
26
The double ratios of four points
34
The bilinear transformation is equivalent to two inversions
42
The logarithm in general
48
The addition theorem of the exponential
54
Case of coincident fixed points
60
ART CHAPTER VI
67
a
68
Every sequence of constantly increasing real numbers admits a finite or infinite limit
69
Every sequence of real numbers has an upper and a lower limit
70
The necessary and sufficient condition that a sequence tends to a finite limit
71
Real functions of a real variable
72
Continuity of a function of a real variable
73
A continuous function of a real variable attains its upper and lower limits
74
Functions of two independent real variables
77
A continuous function ƒ n attains its upper and lower limits Uniform continuity of a function of one real variable
80
Uniform continuity of a function of two real variables
81
Uniform convergence to a limit
82
CHAPTER VII
84
Continuity of the rational integral function
85
57
87
The derivate of a function
88
The fundamental theorem of algebra 60 Proof of the fundamental theorem
91
61
93
CHAPTER VIII
96
64
99
Association of the terms of a series
101
Absolutely convergent series
105
Conditionally convergent series
106
Conversion of a single series into a double series
107
CHAPTER IX
113
Uniform convergence 72 Uniform convergence implies continuity
117
Uniform and absolute convergence PAGE
118
The real power series
119
CHAPTER X
123
Notation
125
The circle of convergence 77 Uniform convergence of complex series 78 Cauchys theorem on the coefficients of a power series
129
Por does not vanish near
131
Criteria of identity of power series
132
CHAPTER XI
134
Remarks on Weierstrasss theorem
137
Applications of Weierstrasss theorem
139
Reversion of a power series
142
Taylors theorem for power series
144
The derivates of a power series
146
Differentiation of a series of power series term by term
147
The inverse circular functions
172
Mapping with the circular functions
175
CHAPTER XIV
178
ΙΟΙ 104
182
Character of a onevalued function determined by its singu larities
183
123
187
106
188
107
189
WEIERSTRASSS FACTORTHEOREM 109 Infinite products
194
IIO Construction of functions Gr with assigned zeros
196
Weierstrasss primary factors
197
The factorformula for sin x
199
The Gamma function and its reciprocal 204
206
CHAPTER XVI
209
Reconciliation of the definitions in the case of the power series
211
ART PAGE 117 Case where the endvalues belong to different elements
214
Cauchys theorem
218
Residues
219
I20 General applications of the theory of residues
222
Special applications to real definite integrals
223
CHAPTER XVII
230
Isolated singularities of onevalued functions
232
Fouriers series
235
125
237
The theta functions
240
CHAPTER XVIII
243
128
245
129
246
Series for u tu ou in powers of u
249
131
250
132
251
Are S σ periodic?
252
134
255
Comparison of elliptic functions
258
137
259
The addition theorem for u
260
139
262
The addition theorem for u
263
Integration of an elliptic function
264
142
265
Relation connecting Pu ou
268
144
269
146
270
147
273
149
280
Continuation of a function defined by a power series 151
284
CHAPTER XXI
293
159
299
CHAPTER XXII
306
Extended form of Taylors theorem
313
The analytic function
314
Schwarzs and Christoffels mapping of a straight line on
321
LIST OF BOOKS
327
General remarks on analytic functions 156 92 Preliminary discussion of singular points 157
328
209
330
Transcendental integral functions 159
332
Natural boundaries 160
333

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