On the conjugation of piecewise smooth circle homeomorphisms with a finite number of break points

Autor: Dieter Mayer, Akhtam Dzhalilov, Utkir Safarov
Rok vydání: 2015
Předmět:
Zdroj: Nonlinearity. 28:2441-2459
ISSN: 1361-6544
0951-7715
DOI: 10.1088/0951-7715/28/7/2441
Popis: Let fi, i = 1, 2, be orientation preserving circle homeomorphisms with a finite number of break points , at which the first derivatives Dfi have jumps, and whose irrational rotation numbers coincide. Denote by the jump ratio of fi at a break point and by its total jump ratio, given by the product of the jump ratios over all break points .We prove that, for two such circle homeomorphisms fi, i = 1, 2, which on each interval of continuity of Dfi are C2+e, e > 0, and whose total jump ratios and do not coincide, the map h conjugating f1 and f2 is a singular function.
Databáze: OpenAIRE