Relative dimension, towers of projections and commuting squares of subfactors
Relative dimension, towers of projections and commuting squares of subfactors
Dedicated to the memory of Henry DyeWe study the set of projections of the type II i factor M which expected on the subfactor N C M are scalar multiples of the identity.The set of all these scalars, denoted Λ(M, N), is an invariant for the inclusion N c M. …