Past Three Days
So, for the last three days we (SUNY Buffalo) have had one hour talks by Bill Arveson. Two of them are on the utterly bizzare intersection of operator theory and algebraic geometry/commutative algebra. Needless to say, I understood nothing lol.
The second, which was more accessible to me, was on the state of noncommutative dynamics.
He said something that I should be able to solve (I think lol):
"If you have the direct sum of unilaterial shifts on a separable hilbert space, then this is a compact perturbation of a unilaterial shift (ie S + K where S is a shift and K is compact.)"
Any ideas ? Maybe he meant 'this is unitarily equivalent to...'?
:p
The second, which was more accessible to me, was on the state of noncommutative dynamics.
He said something that I should be able to solve (I think lol):
"If you have the direct sum of unilaterial shifts on a separable hilbert space, then this is a compact perturbation of a unilaterial shift (ie S + K where S is a shift and K is compact.)"
Any ideas ? Maybe he meant 'this is unitarily equivalent to...'?
:p