The functor $K_0^{\operatorname{gr}}$ is full and only weakly faithful

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1. Verfasser: Vas, Lia
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Veröffentlicht: 2022
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author Vas, Lia
author_facet Vas, Lia
contents The Graded Classification Conjecture states that the pointed $K_0^{\operatorname{gr}}$-group is a complete invariant of the Leavitt path algebras of finite graphs when these algebras are considered with their natural grading by $\mathbb Z.$ The strong version of this conjecture states that the functor $K_0^{\operatorname{gr}}$ is full and faithful when considered on the category of Leavitt path algebras of finite graphs and their graded homomorphisms modulo conjugations by invertible elements of the zero components. We show that the functor $K_0^{\operatorname{gr}}$ is full for the unital Leavitt path algebras of countable graphs and that it is faithful (modulo specified conjugations) only in a certain weaker sense.
format Preprint
id arxiv_https___arxiv_org_abs_2206_06458
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle The functor $K_0^{\operatorname{gr}}$ is full and only weakly faithful
Vas, Lia
Rings and Algebras
K-Theory and Homology
16S88, 16E20, 19A49
The Graded Classification Conjecture states that the pointed $K_0^{\operatorname{gr}}$-group is a complete invariant of the Leavitt path algebras of finite graphs when these algebras are considered with their natural grading by $\mathbb Z.$ The strong version of this conjecture states that the functor $K_0^{\operatorname{gr}}$ is full and faithful when considered on the category of Leavitt path algebras of finite graphs and their graded homomorphisms modulo conjugations by invertible elements of the zero components. We show that the functor $K_0^{\operatorname{gr}}$ is full for the unital Leavitt path algebras of countable graphs and that it is faithful (modulo specified conjugations) only in a certain weaker sense.
title The functor $K_0^{\operatorname{gr}}$ is full and only weakly faithful
topic Rings and Algebras
K-Theory and Homology
16S88, 16E20, 19A49
url https://arxiv.org/abs/2206.06458