Subadditive measures on projectors of a von Neumann algebra

6 Brandsma & van Mill ’98: contains monotonically normal compact spaces (this follows from (2), (5) and M.E. Rudin result, that every monotonically normal compact space is

We also derive from our char- b acterization new proofs of previously known results, namely Feldman and Kadison’s characterization of the closure of the invertibles in a von

Indeed, for the disc algebra it follows from Ryff’s theorem that a representing measure with minimal support is harmonic measure for some domain and therefore extreme.. On the

We study the extreme and exposed points of the convex set consisting of representing measures of the disk algebra, supported in the closed unit disk.. A boundary point of this set

As a main example of consequences of this maximal inequality we prove the following extension to the noncommutative context of the classical Tan- dori theorem on the

The proof given there is incorrect, because the formula for deg y h (see the second line on page 14 in [2]) does not hold in some cases.. The aim of this note is to give a

This was done by using the standard form of von Neumann algebras. In the case of the existence of a norm one projection from the algebra to the subalgebra preserving the given state

Jego współpraca z Johnem von Neumannem zapoczątkowała nowe dziedziny matematyki oraz