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Exact Borel subalgebras, idempotent quotients and idempotent subalgebras

open access: yes
This article studies the compatibility of Koenig's notion of an exact Borel subalgebra of a quasi-hereditary or, more generally, standardly stratified algebra with taking idempotent subalgebras or quotients. As an application, we provide bounds for the multiplicities of indecomposable projectives in the principal blocks of BGG category $\mathcal{O ...
Conde, Teresa, Külshammer, Julian
openaire   +2 more sources

Idempotence and regularity of generlized relational hypersubstitutions for algebraic sytems

open access: yesDiscussiones Mathematicae - General Algebra and Applications
Pornpimol Kunama, Sorasak Leeratanavalee
doaj   +1 more source

Idempotent boolean matrices

open access: yesSemigroup Forum, 1980
Mukherjea, A., Chaudhuri, R.
openaire   +1 more source

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