Functions of real variables ; Functions of a complex variable / by William Fogg Osgood.

Por: Osgood, William F. (William Fogg), 1864-1943Editor: New York : Chelsea, [1958]Descripción: xii, 407, viii, 262 p. ; 21 cmOtro título: Functions of real and complex variables [Titulo de lomo] | Functions of a complex variableOtra clasificación: 26-01 (30-01)
Contenidos:
 CONTENTS
Chapter I
Convergence of Infinite Series
1. Definitions [1]
2. Comparison Tests for Series of Positive Terms [3]
3. A General Test-Ratio Test [7]
4. Cauchy’s Test by Integration [9]
5. Tests in Case lim un+1/un =1 [13]
6. Kummer’s Criterion [16]
7. Continuation. Discussion [18]
8. Alternating Series [20]
9. Series with Positive and Negative Terms at Pleasure [22]
10. Infinite Products [26]
11. The Hypergeometric Series [30]
Chapter II
The Number System
1. The Problem [34]
2. Fractions [36]
3. Negative Numbers [40]
4. Irrational Numbers [46]
5. The Theorem of Continuity [48]
6. Convergence. Limits. The Fundamental Theorem [49]
7. Addition of Irrationals [50]
8. Limit of the Sum of Two Variables [52]
9. Multiplication of Irrationals [53]
10. Roots. Inequalities [57]
11. Retrospect [58]
Chapter III
Point Sets. Limits. Continuity
1. Definitions [62]
2. An Example [65]
3. Functions [67]
4. Continuation [68]
5. Limits [70]
6. Bounded Functions [74]
7. Three Theorems on Limits [76]
8. Continuous Functions [80]
9. Three Theorems on Continuous Functions [83]
10. Uniform Continuity [87]
11. The Covering Theorem [91]
12. The Axiom of Choice [91]
Chapter IV
Derivatives. Integrals. Implicit Functions
1. Derivatives [97]
2. Continuous Function without a Derivative [100]
3. Rolle’s Theorem [101]
4. Law of the Mean [102]
5. Differentiation of Composite Functions. Differentials [103]
6. Taylor’s Theorem with a Remainder [105]
7. Functions of Several Variables [105]
8. Integral of a Continuous Function [110]
9. Implicit Functions [117]
10. The Existence Theorem [119]
11. Simultaneous Systems of Equations [123]
12. The Inverse of a Transformation [127]
13. Identical Vanishing of the Jacobian [128]
14. Solutions in the Large [130]
Chapter V
Uniform Convergence
1. Series of Functions [132]
2. Uniform Convergence [134]
4. Weierstrass’s M-Test [136]
5. Continuity [138]
6. Power Series [141]
6. Abel’s Lemma [146]
7. The Binomial Series [147]
8. Integration of Series [154]
9. Differentiation of Series [159]
10. Double Limits and the s (n, m) -Theorem [164]
11. Application: Differentiation of Series [170]
12. Condensation of Singularities [172]
Chapter VI
The Elementary Functions
1. The Trigonometric Functions [176]
2. The Logarithmic Function [183]
3. The Exponential Function [186]
4. A Simpler Analytic Treatment [189]
5. Partial Fractions. Development of cot x [190]
6. Infinite Products [196]
Chapter VII
Algebraic Transformations of Infinite Series
1. Elementary Theorems [197]
2. The Commutative Law [198]
3. The Associative Law [199]
4. Double Series [200]
5. Series of Series [205]
6. Power Series [207]
7. Bernoulli’s Numbers [212]
8. The Development of cot x [214]
9. Analytic Functions of Several Variables [215]
10. Regular Curves. Jordan Curves [218]
Chapter VIII
Fourier’s Series
1. Fourier’s Series [220]
2. Bessel’s Inequality. Normal Functions [223]
5. Appraisal of the Fourier’s Coefficients [226]
4. Identical Vanishing [227]
5. The Formulas of Summation [230]
6. Abel’s Theorem [232]
7. Proof of Convergence [234]
8. Continuation. The Discontinuous Case [234]
9. The Gibbs Effect [236]
10. Integration and Differentiation of the Expansion [240]
11. Divergent Series [242]
12. Summable Fourier’s Series [247]
15. Concluding Remarks [251]
Chapter IX
Definite Integrals. Line Integrals
1. Proper Integrals. Continuity [258]
2. Continuation [261]
3. Differentiation. Leibniz’s Rule [263]
4. Variable Limits of Integration [266]
5. Iterated Integral with Constant Limits [268]
6. Proof that ϑ2u/ϑx ϑy = ϑ2u/ϑy ϑx [269]
7. Improper Integrals [270]
8. Double Limits [272]
9. Uniform Convergence [272]
10. The de la Vallee-Poussin μ (x) - Test [273]
11. Continuity [275]
12. Integration. Reversal of the Order [277]
13. Leibniz’s Rule [279]
14. Applications [281]
15. The Gamma Function [283]
16. Improper Integrals over a Finite Interval [284]
17. The Beta-Function [286]
18. Both Limits Infinite [287]
19. Application. The B-Function in Terms of the Γ-Function [290]
20. Rectangular Region of Integration [292]
21. Appraisal of an Alternating Integral [294]
22. Computation of ∫0∞ (sin x / x)dx [296]
Applications [296]
Duhamel’s Theorem [300]
Line Integrals [303]
Continuation. The Integral: ∫c Pdx + Qdy [305]
Chapter X
The Gamma Function
Definition [312]
The Difference Equation [314]
Gauss’s Product [314]
Agreement of the Two Definitions [319]
Stirling’s Formula [320]
Chapter XI
Fourier’s Integral
Fourier’s Integral. Heuristic Treatment [327]
A Lemma [329]
Continuation. The General Case [332]
Convergence of Fourier’s Integral. Differentiation [336]
Derived Integrals [338]
Fourier’s Integral for Functions of Several Variables [341]
Chapter XII
Differential Equations. Existence Theorems The Problem [348]
The Existence Theorem [350]
Continuation; n Equations [357]
The Semi-Linear Case [362]
Dependence on Parameters [367]
Implicit Integral Relations [371]
Linear Differential Equations [375]
Differential Equations of Higher Order; General Case [376]
Complex Variables [377]
Linear Partial Differential Equations of the First Order [378]
The General Case [383]
12. Change of Variables [385]
13. The General Partial Differential Equation of the First Order; n = 2 [387]
14. Continuation. Integration by Means of Characteristics [393]
15. The Case of n Variables [398]
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Reproducción de dos textos publicados originalmente en China en 1936.

CONTENTS --
Chapter I --
Convergence of Infinite Series --
1. Definitions [1] --
2. Comparison Tests for Series of Positive Terms [3] --
3. A General Test-Ratio Test [7] --
4. Cauchy’s Test by Integration [9] --
5. Tests in Case lim un+1/un =1 [13] --
6. Kummer’s Criterion [16] --
7. Continuation. Discussion [18] --
8. Alternating Series [20] --
9. Series with Positive and Negative Terms at Pleasure [22] --
10. Infinite Products [26] --
11. The Hypergeometric Series [30] --
Chapter II --
The Number System --
1. The Problem [34] --
2. Fractions [36] --
3. Negative Numbers [40] --
4. Irrational Numbers [46] --
5. The Theorem of Continuity [48] --
6. Convergence. Limits. The Fundamental Theorem [49] --
7. Addition of Irrationals [50] --
8. Limit of the Sum of Two Variables [52] --
9. Multiplication of Irrationals [53] --
10. Roots. Inequalities [57] --
11. Retrospect [58] --
Chapter III --
Point Sets. Limits. Continuity --
1. Definitions [62] --
2. An Example [65] --
3. Functions [67] --
4. Continuation [68] --
5. Limits [70] --
6. Bounded Functions [74] --
7. Three Theorems on Limits [76] --
8. Continuous Functions [80] --
9. Three Theorems on Continuous Functions [83] --
10. Uniform Continuity [87] --
11. The Covering Theorem [91] --
12. The Axiom of Choice [91] --
Chapter IV --
Derivatives. Integrals. Implicit Functions --
1. Derivatives [97] --
2. Continuous Function without a Derivative [100] --
3. Rolle’s Theorem [101] --
4. Law of the Mean [102] --
5. Differentiation of Composite Functions. Differentials [103] --
6. Taylor’s Theorem with a Remainder [105] --
7. Functions of Several Variables [105] --
8. Integral of a Continuous Function [110] --
9. Implicit Functions [117] --
10. The Existence Theorem [119] --
11. Simultaneous Systems of Equations [123] --
12. The Inverse of a Transformation [127] --
13. Identical Vanishing of the Jacobian [128] --
14. Solutions in the Large [130] --
Chapter V --
Uniform Convergence --
1. Series of Functions [132] --
2. Uniform Convergence [134] --
4. Weierstrass’s M-Test [136] --
5. Continuity [138] --
6. Power Series [141] --
6. Abel’s Lemma [146] --
7. The Binomial Series [147] --
8. Integration of Series [154] --
9. Differentiation of Series [159] --
10. Double Limits and the s (n, m) -Theorem [164] --
11. Application: Differentiation of Series [170] --
12. Condensation of Singularities [172] --
Chapter VI --
The Elementary Functions --
1. The Trigonometric Functions [176] --
2. The Logarithmic Function [183] --
3. The Exponential Function [186] --
4. A Simpler Analytic Treatment [189] --
5. Partial Fractions. Development of cot x [190] --
6. Infinite Products [196] --
Chapter VII --
Algebraic Transformations of Infinite Series --
1. Elementary Theorems [197] --
2. The Commutative Law [198] --
3. The Associative Law [199] --
4. Double Series [200] --
5. Series of Series [205] --
6. Power Series [207] --
7. Bernoulli’s Numbers [212] --
8. The Development of cot x [214] --
9. Analytic Functions of Several Variables [215] --
10. Regular Curves. Jordan Curves [218] --
Chapter VIII --
Fourier’s Series --
1. Fourier’s Series [220] --
2. Bessel’s Inequality. Normal Functions [223] --
5. Appraisal of the Fourier’s Coefficients [226] --
4. Identical Vanishing [227] --
5. The Formulas of Summation [230] --
6. Abel’s Theorem [232] --
7. Proof of Convergence [234] --
8. Continuation. The Discontinuous Case [234] --
9. The Gibbs Effect [236] --
10. Integration and Differentiation of the Expansion [240] --
11. Divergent Series [242] --
12. Summable Fourier’s Series [247] --
15. Concluding Remarks [251] --
Chapter IX --
Definite Integrals. Line Integrals --
1. Proper Integrals. Continuity [258] --
2. Continuation [261] --
3. Differentiation. Leibniz’s Rule [263] --
4. Variable Limits of Integration [266] --
5. Iterated Integral with Constant Limits [268] --
6. Proof that ϑ2u/ϑx ϑy = ϑ2u/ϑy ϑx [269] --
7. Improper Integrals [270] --
8. Double Limits [272] --
9. Uniform Convergence [272] --
10. The de la Vallee-Poussin μ (x) - Test [273] --
11. Continuity [275] --
12. Integration. Reversal of the Order [277] --
13. Leibniz’s Rule [279] --
14. Applications [281] --
15. The Gamma Function [283] --
16. Improper Integrals over a Finite Interval [284] --
17. The Beta-Function [286] --
18. Both Limits Infinite [287] --
19. Application. The B-Function in Terms of the Γ-Function [290] --
20. Rectangular Region of Integration [292] --
21. Appraisal of an Alternating Integral [294] --
22. Computation of ∫0∞ (sin x / x)dx [296] --
Applications [296] --
Duhamel’s Theorem [300] --
Line Integrals [303] --
Continuation. The Integral: ∫c Pdx + Qdy [305] --
Chapter X --
The Gamma Function --
Definition [312] --
The Difference Equation [314] --
Gauss’s Product [314] --
Agreement of the Two Definitions [319] --
Stirling’s Formula [320] --
Chapter XI --
Fourier’s Integral --
Fourier’s Integral. Heuristic Treatment [327] --
A Lemma [329] --
Continuation. The General Case [332] --
Convergence of Fourier’s Integral. Differentiation [336] --
Derived Integrals [338] --
Fourier’s Integral for Functions of Several Variables [341] --
Chapter XII --
Differential Equations. Existence Theorems The Problem [348] --
The Existence Theorem [350] --
Continuation; n Equations [357] --
The Semi-Linear Case [362] --
Dependence on Parameters [367] --
Implicit Integral Relations [371] --
Linear Differential Equations [375] --
Differential Equations of Higher Order; General Case [376] --
Complex Variables [377] --
Linear Partial Differential Equations of the First Order [378] --
The General Case [383] --
12. Change of Variables [385] --
13. The General Partial Differential Equation of the First Order; n = 2 [387] --
14. Continuation. Integration by Means of Characteristics [393] --
15. The Case of n Variables [398] --

MR, 20 #936

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