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32. Several Complex Variables and Analytic Spaces

This volume studies functions of several complex variables, complex manifolds, and analytic spaces.

This volume studies functions of several complex variables, complex manifolds, and analytic spaces. It extends complex analysis into higher dimensions, where geometry and sheaf methods become central.

Part I. Functions of Several Complex Variables

Chapter 1. Complex Euclidean Space

1.1 Coordinates in ℂⁿ 1.2 Domains and open sets 1.3 Holomorphic functions 1.4 Complex differentiability 1.5 Examples

Chapter 2. Power Series

2.1 Several-variable power series 2.2 Domains of convergence 2.3 Holomorphic germs 2.4 Analytic continuation 2.5 Examples

Chapter 3. Cauchy Theory

3.1 Cauchy integral formula in several variables 3.2 Polydiscs 3.3 Hartogs phenomenon 3.4 Bochner–Martinelli formula 3.5 Applications

Part II. Domains of Holomorphy

Chapter 4. Pseudoconvexity

4.1 Convexity vs pseudoconvexity 4.2 Plurisubharmonic functions 4.3 Levi form 4.4 Examples 4.5 Applications

Chapter 5. Domains of Holomorphy

5.1 Definition 5.2 Holomorphic convexity 5.3 Envelopes of holomorphy 5.4 Cartan–Thullen theorem 5.5 Examples

Chapter 6. Stein Manifolds

6.1 Definition and examples 6.2 Cartan theorems A and B 6.3 Coherent analytic sheaves 6.4 Embedding theorems 6.5 Applications

Part III. Analytic Sets and Spaces

Chapter 7. Analytic Sets

7.1 Local zero sets 7.2 Irreducible components 7.3 Regular and singular points 7.4 Dimension 7.5 Examples

Chapter 8. Analytic Spaces

8.1 Structure sheaves 8.2 Local rings 8.3 Morphisms 8.4 Reduced spaces 8.5 Examples

Chapter 9. Singularities

9.1 Isolated singularities 9.2 Normalization 9.3 Resolution overview 9.4 Local invariants 9.5 Applications

Part IV. Sheaves and Cohomology

Chapter 10. Sheaves in Complex Analysis

10.1 Presheaves and sheaves 10.2 Sheaf of holomorphic functions 10.3 Coherent sheaves 10.4 Exact sequences 10.5 Examples

Chapter 11. Cohomology

11.1 Čech cohomology 11.2 Dolbeault cohomology 11.3 De Rham connections 11.4 Vanishing theorems 11.5 Applications

Chapter 12. The ∂̄ Problem

12.1 Differential forms 12.2 Dolbeault operator 12.3 Solving ∂̄ equations 12.4 L² methods overview 12.5 Applications

Part V. Complex Manifolds

Chapter 13. Complex Manifolds

13.1 Definitions 13.2 Holomorphic maps 13.3 Tangent and cotangent bundles 13.4 Examples 13.5 Basic properties

Chapter 14. Hermitian and Kähler Geometry

14.1 Hermitian metrics 14.2 Kähler forms 14.3 Connections and curvature 14.4 Examples 14.5 Applications

Chapter 15. Compact Complex Manifolds

15.1 Compactness phenomena 15.2 Meromorphic functions 15.3 Divisors and line bundles 15.4 Hodge theory overview 15.5 Examples

Part VI. Connections to Algebraic Geometry

Chapter 16. Complex Algebraic Varieties

16.1 Algebraic vs analytic sets 16.2 GAGA overview 16.3 Projective varieties 16.4 Analytic interpretation 16.5 Examples

Chapter 17. Moduli and Deformation

17.1 Deformations of complex structures 17.2 Kodaira–Spencer theory overview 17.3 Moduli spaces 17.4 Obstruction theory 17.5 Applications

Chapter 18. Complex Spaces and Schemes

18.1 Analytification 18.2 Proper maps 18.3 Coherent sheaves 18.4 Comparison results 18.5 Applications

Part VII. Applications and Computation

Chapter 19. Complex Dynamics

19.1 Holomorphic maps in several variables 19.2 Iteration and stability 19.3 Julia-type sets overview 19.4 Dynamical degrees 19.5 Applications

Chapter 20. PDE and Analysis Applications

20.1 Elliptic regularity 20.2 Boundary problems 20.3 Bergman kernels 20.4 Several-variable integral operators 20.5 Applications

Chapter 21. Computational Aspects

21.1 Local analytic computation 21.2 Power series algorithms 21.3 Symbolic methods 21.4 Numerical complex geometry 21.5 Software tools

Part VIII. Research Directions

Chapter 22. Advanced Topics

22.1 Hodge theory 22.2 Birational complex geometry 22.3 Non-Kähler geometry 22.4 Complex Monge–Ampère equations 22.5 Emerging areas

Chapter 23. Open Problems

23.1 Classification of complex manifolds 23.2 Singularities and resolutions 23.3 Boundary regularity 23.4 Moduli questions 23.5 Future directions

Chapter 24. Historical and Conceptual Notes

24.1 Development of several complex variables 24.2 Key contributors 24.3 Evolution of analytic spaces 24.4 Cross-disciplinary impact 24.5 Summary

Appendix

A. Several-variable notation reference B. Key theorems summary C. Proof techniques checklist D. Example catalog E. Cross-reference to other MSC branches

This volume develops the higher-dimensional theory of complex analysis. It emphasizes the shift from one-variable function theory to geometry, sheaves, and analytic spaces.