New York Journal of Mathematics
Volume 1 (1994-1995) 1-9


Robert W. Berger

Heinrich's Counterexample to Azevedo's Conjecture

Published: July 13, 1994
Keywords: plane curves, torsion of differential module
Subject: 14H20, 13N05

Johannes Heinrich, a student of the University of Saarbrücken, found by computer calculation an example of a plane algebroid curve whose module of differentials has a bigger torsion than that of the canonical branch in the same equisingularity class. That contradicts a conjecture of Azevedo.

Author information

Fachbereich Mathematik, Universität des Saarlandes, D-66041 Saarbrücken, Germany