New York Journal of Mathematics
Volume 8 (2002) 257-258


J. O. Button

Lifting Möbius Groups: Addendum

Published: December 26, 2002
Keywords: lift, group
Subject: 30F40, 20H10

We show that if Γ is a group with H2(Γ; Z2)=0 then every representation of Γ into PSL(2,C) lifts to SL(2,C), but the converse does not hold.

Author information

Selwyn College, Cambridge, CB3 9DQ, U.K.