Izv. Vyssh. Uchebn. Zaved. Mat., 2018, Number 10, Pages 43–54
On a class of graded ideals of semigroup $C^*$-algebras
E. V. Lipacheva
Kazan State Power Engineering University,
51 Krasnosel’skaya str., Kazan, 420066 Russia
We present general results about graded $C^*$-algebras and continue the previously initiated research of the $C^*$-algebra generated by the left regular representation of an Abelian semigroup. We study the invariant ideals of this $C^*$-algebra invariant with respect to the representation of a compact group $G$ in the automorphism group of this algebra. We prove that the invariance of the ideal is equivalent to the fact that this ideal is graded $C^*$-algebra, that there is a maximum of all invariant ideals, and it is the commutator ideal. Separately we study a class of graded primitive ideals generated by a single projector.
$C^*$-algebra, graded $C^*$-algebra, semigroup, left regular representation, invariant subspace, representation in the automorphism group, invariant ideal, commutator ideal.
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E. V. Lipacheva, “On a class of graded ideals of semigroup $C^*$-algebras”, Izv. Vyssh. Uchebn. Zaved. Mat., 2018, no. 10, 43–54
Citation in format AMSBIB
\paper On a class of graded ideals of semigroup $C^*$-algebras
\jour Izv. Vyssh. Uchebn. Zaved. Mat.
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