researcher

Efren Ruiz

45 papers hereh-index 17739 citations60 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position

sole author1
first author5
middle author14
last author25

Across the 45 of 45 papers where every author was matched, so the position is known.

fields

math.OA40
math.RA4
math.KT1

same name

Efren Ruiz — 6 papers, h 2
Efren Ruiz — 3 papers, h 1
Efren Ruiz — 2 papers, h 1

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity

20052025

most citedEquivalence and stable isomorphism of groupoids, and diagonal-preserving stable isomorphisms of graph C*-algebras and Leavitt path algebras

58 citations · 342 across the 36 of their papers we have counts for

collaborators

Showing 2018Show all

2 papers · 1 filter

math.OA2018★ 2 cited

The extension problem for graph $C^{*}$ -algebras

Søren Eilers, James Gabe, Takeshi Katsura +2

We give a complete $K$ -theoretical description of when an extension of two simple graph $C^{*}$ -algebras is again a graph $C^{*}$ -algebra.

math.OA2018

The unital Ext-groups and classification of $C^{*}$ -algebras

James Gabe, Efren Ruiz

The semigroups of unital extensions of separable $C^{*}$ -algebras come in two flavours: a strong and a weak version. By the unital $Ext$ -groups, we mean the groups of inv…

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Data

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.

The extension problem for graph C∗-algebras

The unital Ext-groups and classification of C∗-algebras

The extension problem for graph $C^{*}$ -algebras

The unital Ext-groups and classification of $C^{*}$ -algebras