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30. Complex Analysis

This volume studies functions of a complex variable.

This volume studies functions of a complex variable. It develops analyticity, contour integration, and the rich structure that arises from complex differentiability.

Part I. Complex Numbers and Functions

Chapter 1. Complex Numbers

1.1 Algebra of complex numbers 1.2 Geometry in the complex plane 1.3 Polar form and Euler’s formula 1.4 Roots of unity 1.5 Basic properties

Chapter 2. Complex Functions

2.1 Functions of a complex variable 2.2 Limits and continuity 2.3 Differentiability 2.4 Holomorphic functions 2.5 Examples

Chapter 3. Analyticity

3.1 Power series 3.2 Analytic functions 3.3 Cauchy–Riemann equations 3.4 Harmonic functions 3.5 Examples

Part II. Complex Integration

Chapter 4. Contours and Integrals

4.1 Paths in the complex plane 4.2 Line integrals 4.3 Properties 4.4 Examples 4.5 Applications

Chapter 5. Cauchy Theory

5.1 Cauchy integral theorem 5.2 Cauchy integral formula 5.3 Consequences 5.4 Applications 5.5 Examples

Chapter 6. Residue Theory

6.1 Singularities 6.2 Residues 6.3 Residue theorem 6.4 Evaluation of integrals 6.5 Applications

Part III. Series and Expansions

Chapter 7. Power Series

7.1 Convergence 7.2 Radius of convergence 7.3 Operations on series 7.4 Examples 7.5 Applications

Chapter 8. Laurent Series

8.1 Expansion near singularities 8.2 Principal parts 8.3 Classification of singularities 8.4 Examples 8.5 Applications

Chapter 9. Analytic Continuation

9.1 Extension of functions 9.2 Monodromy (overview) 9.3 Branch points 9.4 Riemann surfaces (overview) 9.5 Applications

Part IV. Conformal Mapping

Chapter 10. Conformal Maps

10.1 Angle preservation 10.2 Basic examples 10.3 Möbius transformations 10.4 Properties 10.5 Applications

Chapter 11. Mapping Theorems

11.1 Riemann mapping theorem (overview) 11.2 Schwarz lemma 11.3 Automorphisms of domains 11.4 Applications 11.5 Examples

Chapter 12. Applications

12.1 Fluid flow 12.2 Electrostatics 12.3 Boundary value problems 12.4 Engineering applications 12.5 Examples

Part V. Special Functions and Advanced Topics

Chapter 13. Entire and Meromorphic Functions

13.1 Definitions 13.2 Growth of functions 13.3 Zeros and poles 13.4 Weierstrass factorization (overview) 13.5 Applications

Chapter 14. Special Functions

14.1 Gamma function 14.2 Zeta function 14.3 Elliptic functions (overview) 14.4 Functional equations 14.5 Applications

Chapter 15. Value Distribution Theory (Overview)

15.1 Nevanlinna theory basics 15.2 Distribution of values 15.3 Applications 15.4 Examples 15.5 Connections

Part VI. Harmonic and Potential Connections

Chapter 16. Harmonic Functions

16.1 Laplace equation 16.2 Mean value property 16.3 Maximum principle 16.4 Applications 16.5 Examples

Chapter 17. Potential Theory Links

17.1 Green’s functions 17.2 Dirichlet problem 17.3 Boundary behavior 17.4 Applications 17.5 Examples

Chapter 18. Fourier and Complex Methods

18.1 Fourier series via complex analysis 18.2 Integral transforms 18.3 Applications 18.4 Examples 18.5 Connections

Part VII. Computational and Applied Aspects

Chapter 19. Numerical Complex Analysis

19.1 Approximation methods 19.2 Contour integration techniques 19.3 Stability issues 19.4 Applications 19.5 Examples

Chapter 20. Applications

20.1 Physics 20.2 Engineering 20.3 Signal processing 20.4 Number theory links 20.5 Examples

Chapter 21. Computational Tools

21.1 Symbolic computation 21.2 Numerical libraries 21.3 Visualization 21.4 Software systems 21.5 Applications

Part VIII. Research Directions

Chapter 22. Advanced Topics

22.1 Several complex variables (overview) 22.2 Complex dynamics 22.3 Teichmüller theory (overview) 22.4 Modern developments 22.5 Emerging areas

Chapter 23. Open Problems

23.1 Growth and distribution questions 23.2 Mapping problems 23.3 Functional equations 23.4 Computational challenges 23.5 Future directions

Chapter 24. Historical and Conceptual Notes

24.1 Development of complex analysis 24.2 Key contributors 24.3 Evolution of ideas 24.4 Cross-disciplinary impact 24.5 Summary

Appendix

A. Common identities and formulas B. Residue computation table C. Proof techniques checklist D. Example catalog E. Cross-reference to other MSC branches

This volume develops complex analysis as a highly structured theory of functions. It emphasizes analyticity, integration, and geometric properties unique to the complex domain.