Mathematical Analysis and Applications :Selected Topics

Chapter

1.3 Monomial Asymptotic Expansions

1.4 Monomial Summability for Singularly Perturbed Differential Equations

1.5 Pfaffian Systems

References

Chapter 2 Duality for Gaussian Processes from Random Signed Measures

2.1 Introduction

2.2 Reproducing Kernel Hilbert Spaces (RKHSs) in the Measurable Category

2.3 Applications to Gaussian Processes

2.4 Choice of Probability Space

2.5 A Duality

2.A Stochastic Processes

2.B Overview of Applications of RKHSs

Acknowledgments

References

Chapter 3 Many‐Body Wave Scattering Problems for Small Scatterers and Creating Materials with a Desired Refraction Coefficient

3.1 Introduction

3.2 Derivation of the Formulas for One‐Body Wave Scattering Problems

3.3 Many‐Body Scattering Problem

3.3.1 The Case of Acoustically Soft Particles

3.3.2 Wave Scattering by Many Impedance Particles

3.4 Creating Materials with a Desired Refraction Coefficient

3.5 Scattering by Small Particles Embedded in an Inhomogeneous Medium

3.6 Conclusions

References

Chapter 4 Generalized Convex Functions and their Applications

4.1 Brief Introduction

4.2 Generalized E‐Convex Functions

4.3 Ea- Epigraph

4.4 Generalized s‐Convex Functions

4.5 Applications to Special Means

References

Chapter 5 Some Properties and Generalizations of the Catalan, Fuss, and Fuss–Catalan Numbers

5.1 The Catalan Numbers

5.1.1 A Definition of the Catalan Numbers

5.1.2 The History of the Catalan Numbers

5.1.3 A Generating Function of the Catalan Numbers

5.1.4 Some Expressions of the Catalan Numbers

5.1.5 Integral Representations of the Catalan Numbers

5.1.6 Asymptotic Expansions of the Catalan Function

5.1.7 Complete Monotonicity of the Catalan Numbers

5.1.8 Inequalities of the Catalan Numbers and Function

5.1.9 The Bell Polynomials of the Second Kind and the Bessel Polynomials

5.2 The Catalan–Qi Function

5.2.1 The Fuss Numbers

5.2.2 A Definition of the Catalan–Qi Function

5.2.3 Some Identities of the Catalan–Qi Function

5.2.4 Integral Representations of the Catalan–Qi Function

5.2.5 Asymptotic Expansions of the Catalan–Qi Function

5.2.6 Complete Monotonicity of the Catalan–Qi Function

5.2.7 Schur‐Convexity of the Catalan–Qi Function

5.2.8 Generating Functions of the Catalan–Qi Numbers

5.2.9 A Double Inequality of the Catalan–Qi Function

5.2.10 The q‐Catalan–Qi Numbers and Properties

5.2.11 The Catalan Numbers and the k‐Gamma and k‐Beta Functions

5.2.12 Series Identities Involving the Catalan Numbers

5.3 The Fuss–Catalan Numbers

5.3.1 A Definition of the Fuss–Catalan Numbers

5.3.2 A Product‐Ratio Expression of the Fuss–Catalan Numbers

5.3.3 Complete Monotonicity of the Fuss–Catalan Numbers

5.3.4 A Double Inequality for the Fuss–Catalan Numbers

5.4 The Fuss–Catalan–Qi Function

5.4.1 A Definition of the Fuss–Catalan–Qi Function

5.4.2 A Product‐Ratio Expression of the Fuss–Catalan–Qi Function

5.4.3 Integral Representations of the Fuss–Catalan–Qi Function

5.4.4 Complete Monotonicity of the Fuss–Catalan–Qi Function

5.5 Some Properties for Ratios of Two Gamma Functions

5.5.1 An Integral Representation and Complete Monotonicity

5.5.2 An Exponential Expansion for the Ratio of Two Gamma Functions

5.5.3 A Double Inequality for the Ratio of Two Gamma Functions

5.6 Some New Results on the Catalan Numbers

5.7 Open Problems

Acknowledgments

References

Chapter 6 Trace Inequalities of Jensen Type for Self‐adjoint Operators in Hilbert Spaces: A Survey of Recent Results

6.1 Introduction

6.1.1 Jensen's Inequality

6.1.2 Traces for Operators in Hilbert Spaces

6.2 Jensen's Type Trace Inequalities

6.2.1 Some Trace Inequalities for Convex Functions

6.2.2 Some Functional Properties

6.2.3 Some Examples

6.2.4 More Inequalities for Convex Functions

6.3 Reverses of Jensen's Trace Inequality

6.3.1 A Reverse of Jensen's Inequality

6.3.2 Some Examples

6.3.3 Further Reverse Inequalities for Convex Functions

6.3.4 Some Examples

6.3.5 Reverses of Hölder's Inequality

6.4 Slater's Type Trace Inequalities

6.4.1 Slater's Type Inequalities

6.4.2 Further Reverses

References

Chapter 7 Spectral Synthesis and Its Applications

7.1 Introduction

7.2 Basic Concepts and Function Classes

7.3 Discrete Spectral Synthesis

7.4 Nondiscrete Spectral Synthesis

7.5 Spherical Spectral Synthesis

7.6 Spectral Synthesis on Hypergroups

7.7 Applications

Acknowledgments

References

Chapter 8 Various Ulam–Hyers Stabilities of Euler–Lagrange–Jensen General (a,b;k=a+b)‐Sextic Functional Equations

8.1 Brief Introduction

8.2 General Solution of Euler–Lagrange–Jensen General (a,b;k=a+b)‐Sextic Functional Equation

8.3 Stability Results in Banach Space

8.3.1 Banach Space: Direct Method

8.3.2 Banach Space: Fixed Point Method

8.4 Stability Results in Felbin's Type Spaces

8.4.1 Felbin's Type Spaces: Direct Method

8.4.2 Felbin's Type Spaces: Fixed Point Method

8.5 Intuitionistic Fuzzy Normed Space: Stability Results

8.5.1 IFNS: Direct Method

8.5.2 IFNS: Fixed Point Method

References

Chapter 9 A Note on the Split Common Fixed Point Problem and its Variant Forms

9.1 Introduction

9.2 Basic Concepts and Definitions

9.2.1 Introduction

9.2.2 Vector Space

9.2.3 Hilbert Space and its Properties

9.2.4 Bounded Linear Map and its Properties

9.2.5 Some Nonlinear Operators

9.2.6 Problem Formulation

9.2.7 Preliminary Results

9.2.8 Strong Convergence for the Split Common Fixed‐Point Problems for Total Quasi‐Asymptotically Nonexpansive Mappings

9.2.9 Strong Convergence for the Split Common Fixed‐Point Problems for Demicontractive Mappings

9.2.10 Application to Variational Inequality Problems

9.2.11 On Synchronal Algorithms for Fixed and Variational Inequality Problems in Hilbert Spaces

9.2.12 Preliminaries

9.3 A Note on the Split Equality Fixed‐Point Problems in Hilbert Spaces

9.3.1 Problem Formulation

9.3.2 Preliminaries

9.3.3 The Split Feasibility and Fixed‐Point Equality Problems for Quasi‐Nonexpansive Mappings in Hilbert Spaces

9.3.4 The Split Common Fixed‐Point Equality Problems for Quasi‐Nonexpansive Mappings in Hilbert Spaces

9.4 Numerical Example

9.5 The Split Feasibility and Fixed Point Problems for Quasi‐Nonexpansive Mappings in Hilbert Spaces

9.5.1 Problem Formulation

9.5.2 Preliminary Results

9.6 Ishikawa‐Type Extra‐Gradient Iterative Methods for Quasi‐Nonexpansive Mappings in Hilbert Spaces

9.6.1 Application to Split Feasibility Problems

9.7 Conclusion

References

Chapter 10 Stabilities and Instabilities of Rational Functional Equations and Euler–Lagrange–Jensen (a,b)‐Sextic Functional Equations

10.1 Introduction

10.1.1 Growth of Functional Equations

10.1.2 Importance of Functional Equations

10.1.3 Functional Equations Relevant to Other Fields

10.1.4 Definition of Functional Equation with Examples

10.2 Ulam Stability Problem for Functional Equation

10.2.1 ϵ‐Stability of Functional Equation

10.2.2 Stability Involving Sum of Powers of Norms

10.2.3 Stability Involving Product of Powers of Norms

10.2.4 Stability Involving a General Control Function

10.2.5 Stability Involving Mixed Product–Sum of Powers of Norms

10.2.6 Application of Ulam Stability Theory

10.3 Various Forms of Functional Equations

10.4 Preliminaries

10.5 Rational Functional Equations

10.5.1 Reciprocal Type Functional Equation

10.5.2 Solution of Reciprocal Type Functional Equation

10.5.3 Generalized Hyers–Ulam Stability of Reciprocal Type Functional Equation

10.5.4 Counter‐Example

10.5.5 Geometrical Interpretation of Reciprocal Type Functional Equation

10.5.6 An Application of Equation (10.41) to Electric Circuits

10.5.7 Reciprocal‐Quadratic Functional Equation

10.5.8 General Solution of Reciprocal‐Quadratic Functional Equation

10.5.9 Generalized Hyers–Ulam Stability of Reciprocal‐Quadratic Functional Equations

10.5.10 Counter‐Examples

10.5.11 Reciprocal‐Cubic and Reciprocal‐Quartic Functional Equations

10.5.12 Hyers–Ulam Stability of Reciprocal‐Cubic and Reciprocal‐Quartic Functional Equations

10.5.13 Counter‐Examples

10.6 Euler‐Lagrange–Jensen (a,b;k=a+b)‐Sextic Functional Equations

10.6.1 Generalized Ulam–Hyers Stability of Euler‐Lagrange‐Jensen Sextic Functional Equation Using Fixed Point Method

10.6.2 Counter‐Example

10.6.3 Generalized Ulam–Hyers Stability of Euler‐Lagrange‐Jensen Sextic Functional Equation Using Direct Method

References

Chapter 11 Attractor of the Generalized Contractive Iterated Function System

11.1 Iterated Function System

11.2 Generalized F‐contractive Iterated Function System

11.3 Iterated Function System in b‐Metric Space

11.4 Generalized F‐Contractive Iterated Function System in b‐Metric Space

References

Chapter 12 Regular and Rapid Variations and Some Applications

12.1 Introduction and Historical Background

12.2 Regular Variation

12.2.1 The Class Tr(RVs)

12.2.2 Classes of Sequences Related to Tr(RVs)

12.2.3 The Class ORVs and Seneta Sequences

12.3 Rapid Variation

12.3.1 Some Properties of Rapidly Varying Functions

12.3.2 The Class ARVs

12.3.3 The Class KRs,∞

12.3.4 The Class Tr(Rs,∞)

12.3.5 Subclasses of Tr(Rs,∞)

12.3.6 The Class 𝚪s

12.4 Applications to Selection Principles

12.4.1 First Results

12.4.2 Improvements

12.4.3 When ONE has a Winning Strategy?

12.5 Applications to Differential Equations

12.5.1 The Existence of all Solutions of (A)

12.5.2 Superlinear Thomas–Fermi Equation (A)

12.5.3 Sublinear Thomas–Fermi Equation (A)

12.5.4 A Generalization

References

Chapter 13 n‐Inner Products, n‐Norms, and Angles Between Two Subspaces

13.1 Introduction

13.2 n‐Inner Product Spaces and n‐Normed Spaces

13.2.1 Topology in n‐Normed Spaces

13.3 Orthogonality in n‐Normed Spaces

13.3.1 G‐, P‐, I‐, and BJ‐ Orthogonality

13.3.2 Remarks on the n‐Dimensional Case

13.4 Angles Between Two Subspaces

13.4.1 An Explicit Formula

13.4.2 A More General Formula

References

Chapter 14 Proximal Fiber Bundles on Nerve Complexes

14.1 Brief Introduction

14.2 Preliminaries

14.2.1 Nerve Complexes and Nerve Spokes

14.2.2 Descriptions and Proximities

14.2.3 Descriptive Proximities

14.3 Sewing Regions Together

14.3.1 Sewing Nerves Together with Spokes to Construct a Nervous System Complex

14.4 Some Results for Fiber Bundles

14.5 Concluding Remarks

References

Chapter 15 Approximation by Generalizations of Hybrid Baskakov Type Operators Preserving Exponential Functions

15.1 Introduction

15.2 Baskakov–Szász Operators

15.3 Genuine Baskakov–Szász Operators

15.4 Preservation of eAx

15.5 Conclusion

References

Chapter 16 Well‐Posed Minimization Problems via the Theory of Measures of Noncompactness

16.1 Introduction

16.2 Minimization Problems and Their Well‐Posedness in the Classical Sense

16.3 Measures of Noncompactness

16.4 Well‐Posed Minimization Problems with Respect to Measures of Noncompactness

16.5 Minimization Problems for Functionals Defined in Banach Sequence Spaces

16.6 Minimization Problems for Functionals Defined in the Classical Space C([a,b])

16.7 Minimization Problems for Functionals Defined in the Space of Functions Continuous and Bounded on the Real Half‐Axis

References

Chapter 17 Some Recent Developments on Fixed Point Theory in Generalized Metric Spaces

17.1 Brief Introduction

17.2 Some Basic Notions and Notations

17.3 Fixed Points Theorems

17.3.1 Fixed Points Theorems for Monotonic and Nonmonotonic Mappings

17.3.2 PPF‐Dependent Fixed‐Point Theorems

17.3.3 Fixed Points Results in b‐Metric Spaces

17.3.4 The generalized Ulam–Hyers Stability in b‐Metric Spaces

17.3.5 Well‐Posedness of a Function with Respect to α‐Admissibility in b‐Metric Spaces

17.3.6 Fixed Points for F‐Contraction

17.4 Common Fixed Points Theorems

17.4.1 Common Fixed‐Point Theorems for Pair of Weakly Compatible Mappings in Fuzzy Metric Spaces

17.5 Best Proximity Points

17.6 Common Best Proximity Points

17.7 Tripled Best Proximity Points

17.8 Future Works

References

Chapter 18 The Basel Problem with an Extension

18.1 The Basel Problem

18.2 An Euler Type Sum

18.3 The Main Theorem

18.4 Conclusion

References

Chapter 19 Coupled Fixed Points and Coupled Coincidence Points via Fixed Point Theory

19.1 Introduction and Preliminaries

19.2 Fixed Point Results

19.2.1 The Single‐Valued Case

19.2.2 The Multi‐Valued Case

19.3 Coupled Fixed Point Results

19.3.1 The Single‐Valued Case

19.3.2 The Multi‐Valued Case

19.4 Coincidence Point Results

19.5 Coupled Coincidence Results

References

Chapter 20 The Corona Problem, Carleson Measures, and Applications

20.1 The Corona Problem

20.1.1 Banach Algebras: Spectrum

20.1.2 Banach Algebras: Maximal Spectrum

20.1.3 The Algebra of Bounded Holomorphic Functions and the Corona Problem

20.2 Carleson's Proof and Carleson Measures

20.2.1 Wolff's Proof

20.3 The Corona Problem in Higher Henerality

20.3.1 The Corona Problem in C

20.3.2 The Corona Problem in Riemann Surfaces: A Positive and a Negative Result

20.3.3 The Corona Problem in Domains of Cn

20.3.4 The Corona Problem for Quaternionic Slice‐Regular Functions

20.3.4.1 Slice‐Regular Functions f:D→H

20.3.4.2 The Corona Theorem in the Quaternions

20.4 Results on Carleson Measures

20.4.1 Carleson Measures of Hardy Spaces of the Disk

20.4.2 Carleson Measures of Bergman Spaces of the Disk

20.4.3 Carleson Measures in the Unit Ball of Cn

20.4.4 Carleson Measures in Strongly Pseudoconvex Bounded Domains of Cn

20.4.5 Generalizations of Carleson Measures and Applications to Toeplitz Operators

20.4.6 Explicit Examples of Carleson Measures of Bergman Spaces

20.4.7 Carleson Measures in the Quaternionic Setting

20.4.7.1 Carleson Measures on Hardy Spaces of B⊂H

20.4.7.2 Carleson Measures on Bergman Spaces of B⊂H

References

Index

EULA

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