a1 Institute for Low Temperature Physics and Engineering of Ukrainian National Academy of Sciences, 47 Lenin Avenue, Kharkov, 61164, Ukraine (email: email@example.com)
It is shown that if E is a subset of such that 1∈E or 2∈E then there is a mixing transformation whose set of spectral multiplicities is E.
(Received August 23 2010)
(Revised September 14 2010)
(Online publication March 14 2011)
Dedicated to the memory of Dan Rudolph