Babes-Bolyai University of Cluj-Napoca
Faculty of Mathematics and Computer Science
Study Cycle: Master

SUBJECT

Code
Subject
MMA1009 Complex Functions of Several Variables
Section
Semester
Hours: C+S+L
Category
Type
Mathematics
4
2+1+0
speciality
optional
Teaching Staff in Charge
Prof. KOHR Gabriela, Ph.D.,  gkohrmath.ubbcluj.ro
Aims
The aim of this course is to introduce and thoroughgoing study certain fundamental results in the theory of functions of several complex variables. The introduction in certain special topics of geometric function theory of several complex variables. The implications of students in the research activity.
Content
1. Holomorphic functions of several complex variables. General properties. Equivalent
definitions, the integral representation formula on polydisc, power series. The
identity theorem for holomorphic function, maximum principle, sequences of
holomorphic functions. Hartogs@ theorem.
2. Holomorphic mappings. General properties. Locally biholomorphic mappings.
Biholomorphic mappings. The equivalence between univalence and biholomorphy. Cartan
uniqueness results. The biholomorphic automorphisms of the Euclidean unit ball and
the unit polydisc.
3. Pluriharmonic functions and plurisubharmonic functions. Properties.
4. Holomorphic extension. Domains of holomorphy. Properties and examples of domains of
holomorphy. Holomorphic convexity. Properties. The equivalence between the notions of
domain of holomorphy and holomorphic convexity.
5. Pseudoconvex domains. Hartogs@ and Levi@s pseudoconvexity. General properties.
6. Subclasses of biholomorphic mappings on the unit ball in Cⁿ: starlike and convex
mappings. Growth and covering results. Coefficient bounds. Examples. Applications
which have parametric representation.
7. Introduction in the theory of differential subordination chains in Cⁿ. The Loewner
differential equation on the unit ball in Cⁿ. Applications.
References
1. Kohr, G., Basic Topics in Holomorphic Functions of Several Complex Variables, Cluj University Press, Cluj-Napoca, 2003.
2. Graham, I., Kohr, G., Geometric Function Theory in One and Higher Dimensions, Marcel Dekker Inc, New York, 2003.
3. Scheidemann, V., Introduction to Complex Analysis in Several Variables, Birkhäuser Verlag, Basel-Boston-Berlin, 2005.
4. Gunning, R.C., Introduction to Holomorphic Functions of Several Variables, vol.I. Function Theory, Wadsworth & Brooks/Cole, Monterey, CA, 1990.
5. Hörmander, L., An Introduction to Complex Analysis in Several Variables, Second Edition. North-Holland Publ. Co., Amsterdam-London, 1973.
6. Chabat, B., Introduction à l@Analyse Complexe, vol. II, Edition MIR, Moscou, 1990.
7. Krantz, S.G., Function Theory of Several Complex Variables, Reprint of the 1992 Edition, AMS Chelsea Publishing, Providence, Rhode Island, 2001.
8. Narasimhan, R., Several Complex Variables, The University of Chicago Press, Chicago, 1971.
9. Range, M., Holomorphic Functions and Integral Representations in Several Complex Variables Springer-Verlag, New York, 1986.
10. Rudin, W., Function Theory in the Unit Ball of Cⁿ, Springer-Verlag, New York, 1980.

Assessment
Exam (70%)+ student activity (30%).
Links: Syllabus for all subjects
Romanian version for this subject
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