A local Banach algebra is stably unital if the collection
of square infinite-dimensional
matrices with entries in
has an approximate identity
consisting of idempotents.
Stably Unital
See also
Algebra, Analytic Function, Approximate Identity, Banach Algebra, Completion, Involution, Local Banach Algebra, Normed Space, Positive Element, Subalgebra, UnitalThis entry contributed by Christopher Stover
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References
Blackadar, B. K-Theory for Operator Algebras. New York: Cambridge University Press, 1998.Referenced on Wolfram|Alpha
Stably UnitalCite this as:
Stover, Christopher. "Stably Unital." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/StablyUnital.html