Projectionless C*-algebra
id:
projectionless-c-algebra-246-5891411
title:
Projectionless C*-algebra
text:
In mathematics, a projectionless C*-algebra is a C*-algebra with no nontrivial projections. For a unital C*-algebra, the projections 0 and 1 are trivial. While for a non-unital C*-algebra, only 0 is considered trivial. The problem of whether simple infinite-dimensional C*-algebras with this property exist was posed in 1958 by Irving Kaplansky, and the first example of one was published in 1981 by Bruce Blackadar. For commutative C*-algebras, being projectionless is equivalent to its spectrum bei
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https://en.wikipedia.org/wiki/Projectionless_C*-algebra
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date modified:
2021-12-22T03:48:02Z
main entity:
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