Complexity in Complex Analysis

✍ Scribed by Steven R. Bell

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 300 KB
• Volume: 172
• Category: Article
• ISSN: 0001-8708
• DOI: 10.1006/aima.2002.2076

✦ Synopsis

We show that the classical kernel and domain functions associated to an nconnected domain in the plane are all given by rational combinations of three or fewer holomorphic functions of one complex variable. We characterize those domains for which the classical functions are given by rational combinations of only two or fewer functions of one complex variable. Such domains turn out to have the property that their classical domain functions all extend to be meromorphic functions on a compact Riemann surface, and this condition will be shown to be equivalent to the condition that an Ahlfors map and its derivative are algebraically dependent. We also show how many of these results can be generalized to finite Riemann surfaces. # 2002 Elsevier Science (USA)