Exposed points in the set of representing measures for the disc algebra

Volume 61 / 1995

Alexander Izzo Annales Polonici Mathematici 61 (1995), 59-62 DOI: 10.4064/ap-61-1-59-62

Abstract

It is shown that for each nonzero point x in the open unit disc D, there is a measure whose support is exactly ∂D ∪ {x} and that is also a weak*-exposed point in the set of representing measures for the origin on the disc algebra. This yields a negative answer to a question raised by John Ryff.

Authors

  • Alexander Izzo

Search for IMPAN publications

Query phrase too short. Type at least 4 characters.

Rewrite code from the image

Reload image

Reload image