2010/06/09 by Nelson Martins-Ferreira, Tim Van der Linden · 2 citations
Mathematics · #Algebraic structures and combinatorial models #Finite Group Theory Research #Rings, Modules, and Algebras #math.CT #msc:18D35 #msc:18G50 #msc:20J15
paper · pdf · doi:10.1007/s10485-010-9231-2
published as Appl. Categ. Structures 20 (2012), no. 2, 175-187 · 11 pages
arxiv created 2010/06/09 · openalex publication_date 2010/07/06 · arxiv updated 2012/05/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We show that two known conditions which arose naturally in commutator theory and in the theory of internal crossed modules coincide: every star-multiplicative graph is multiplicative if and only if every two effective equivalence relations commute as soon as their normalisations do. This answers a question asked by George Janelidze.