3 papers
math.CV2017
Fundamental groups, slalom curves and extremal length
Burglind Jöricke
We define the extremal length of elements of the fundamental group of the twice punctured complex plane and give upper and lower bounds for this invariant. The bounds differ by a m…
math.AG2012
Braids, Conformal Module and Entropy
Burglind Jöricke
The conformal module of conjugacy classes of braids implicitly appeared in a paper of Lin and Gorin in connection with their interest in the 13. Hilbert Problem. This invariant is…
math.CV2004
A Cantor set in the unit sphere in with large polynomial hull
Burglind Jöricke
It is an old question how massive polynomial hulls of Cantor sets in can be. In contrast to expectation e.g. Rudin, Vitushkin and Henkin showed on examples that it c…