New York Journal of Mathematics
Volume 22 (2016) 49-55


Kathryn Mann

A short proof that Diffc(M) is perfect

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Published: January 19, 2016
Keywords: Diffeomorphism groups; perfect group
Subject: 54H15, 57S05, 22E65,

In this note, we follow the strategy of Haller, Rybicki and Teichmann to give a short, self contained, and elementary proof that Diff0(M) is a perfect group, given a theorem of Herman on diffeomorphisms of the circle.

Author information

Dept. of Mathematics, 970 Evans Hall. University of California, Berkeley, CA 94720