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Volume 28

Analytic functions

Stanisław Saks, Antoni Zygmund

Warszawa-Wrocław 1952

Contents

INTRODUCTION THEORY OF SETS 

§ 1. Fundamental definitions
§ 2. Denumerable sets
§ 3. Abstract topological space
§ 4. Closed and open sets
§ 5. Connected sets
§ 6. Compact sets
§ 7. Continuous transformations
§ 8. The plane
§ 9. Connected sets in the plane
§ 10. Square nets in the plane
§ 11. Real and complex functions
§ 12. Curves
§ 13. Cartesian product of sets 

CHAPTER I FUNCTIONS OF A COMPLEX VARIABLE 

§ 1. Continuous functions
§ 2. Uniformly and almost uniformly convergent sequences
§ 3. Normal families of functions
§ 4. Equi-continuous functions
§ 5. The total differential
§ 6. The derivative in the complex domain. Cauchy-Riemann equations
§ 7. The exponential function
§ 8. Trigonometric functionsTrigonometric functions
§ 9. Argument
§ 10. Logarithm
§ 11. Branches of the logarithm, argument and power
§ 12. Angle between half-lines
§ 13. Tangent to a curve
§ 14. Homographic transformations
§ 15. Similarity transformations
§ 16. Regular curves
§ 17. Curvilinear integrals
§ 18. Examples 

CHAPTER II HOLOMORPHIC FUNCTIONS 

§ 1. The derivative in the complex domain
§ 2. Primitive function
§ 3. Differentiation of an integral with respect to a complex variable
§ 4. Cauchy's theorem for a rectangle
§ 5. Cauchy's formula for a system of rectangles
§ 6. Almost uniformly convergent sequences of holomorphic functions
§ 7. Theorem of Stieltjes-Osgood
§ 8. Morera's theorem 

CHAPTER III MEROMORPHIC FUNCTIONS 

§ 1. Power series in the circle of convergence
§ 2. Abel's theorem
§ 3. Expansion of Log (1 - z)
§ 4. Laurent's series. Annulus of convergence
§ 5. Laurent expansion in an annular neighbourhood
§ 6. Isolated singular points
§ 7. Regular, meromorphic, and rational functions
§ 8. Roots of a meromorphic function
§ 9. The logarithmic derivative
§ 10. Rouché's theorem
§ 11. Hurwitz's theorem
§ 12. Mappings defined by meromorphic functions
§ 13. Holomorphic functions of two variables
§ 14. Weierstrass's preparation theorem 

CHAPTER IV ELEMENTARY GEOMETRICAL METHODS OF THE THEORY OF FUNCTIONS 

§ 1. Translation of poles
§ 2. Runge's theorem. Cauchy's theorem for a simply connected region
§ 3. Branch of the logarithm
§ 4. Jensen's formula
§ 5. Increments of the logarithm and argument along a curve
§ 6. Index of a point with respect to a curve
§ 7.Theorem on residues
§ 8. The method of residues in the evaluation of definite integrals
§ 9. Cauchy's theorem and formula for an annulus
§ 10. Analytical definition of a simply connected region vv
§ 11. Jordan's theorem for a closed polygon
§ 12. Analytical definition of the degree of connectivity of a region 

CHAPTER V CONFORMAL TRANSFORMATIONS 

§ 1. Definition
§ 2. Homographic transformationsv
§ 3. Symmetry with respect to a circumference
§ 4. Blaschke's factors
§ 5. Schwarz's lemma
§ 6. Riemann's theorem
§ 7. Radó's theorem
§ 8. The Schwarz-Christoffel formulae 

CHAPTER VI ANALYTIC FUNCTIONS 

§ 1. Introductory remarks
§ 2. Analytic element
§ 3. Analytic continuation along a curve
§ 4. Analytic functions
§ 5. Inverse of an analytic function
§ 6. Analytic functions arbitrarily continuable in a region
§ 7. Theorem of Poincaré-Volterra
§ 8. An analytic function as an abstract space
§ 9. Analytic functions in an annular neighbourhood of a point
§ 10. Analytic functions in an annular neighbourhood as an abstract space
§ 11. Critical points
§ 12. Algebraic critical points
§ 13. Auxiliary theorems of algebra
§ 14. Functions with algebraic critical points
§ 15. Algebraic functions
§ 16. Riemann surfaces 

CHAPTER VII ENTIRE FUNCTIONS AND FUNCTIONS MEROMOR-PHIC IN THE ENTIRE OPEN PLANE 

§ 1. Infinite products
§ 2. Weierstrass's theorem on the decomposition of entire functions into
products
§ 3. Mittag-Leffler's theorem on the decomposition of meromorphic
functions into simple fractions
§ 4. Cauchy's method of decomposing meromorphic functions into simple fractions
§ 5. Examples of expansions of entire and meromorphic functions
§ 6. Order of an entire function
§ 7. Dependence of the order of an entire function on the coefficients
of its Taylor series expansion
§ 8. The exponent of convergence of the roots of an entire function
§ 9. Canonical product
§ 10. Hadamard's theorem
§ 11. Borel's theorem on the roots of entire functions
§ 12. The small theorem of Picard
§ 13. Schottky's theorem. Montel's theorem. Picard's great theorem
§ 14. Landau's theorem 

CHAPTER VIII ELLIPTIC FUNCTIONS 

§ 1. General remarks about periodic functions
§ 2. Expansion of a periodic function in a Fourier series
§ 3. General theorems on elliptic functions
§ 4. The function p(z)
§ 5. Differential equation of the function p(z)
§ 6. The function ...
§ 7. Construction of elliptic functions by means of the function ...
§ 8. Expression of elliptic functions in terms of the functions ...
§ 9. Algebraic addition theorem for the function p(z)
§ 10. Algebraic relations between elliptic functions
§ 11. The modular function ...
§ 12. Further properties of the function ...
§ 13.Solution of the system of equations ...
§ 14. Elliptic integrals 

CHAPTER IX THE FUNCTIONS .... DIRICHLET SERIE 

§ 1. The function ...
§ 2. The function B(p, q)
§ 3. Hankel's formulae for the function ...
§ 4. Stirling's formula
§ 5. The function ... of Riemann
§ 6. Functional equation of the function ...
§ 7. Roots of the function ...
§ 8. Dirichlet series 

Materiały redakcyjne  

Preface, preface to the english edition, index, errata, contents 

 
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