Canad. Math. Bull. 46(2003), 419-428
Printed: Sep 2003
We determine when an automorphism of a subfactor of type III$_0$
with finite index is non-strongly free in the sense of C.~Winsl\o w
in terms of the modular endomorphisms introduced by M.~Izumi.
46L37 - Subfactors and their classification