12 citations · 13 across the 2 of their papers we have counts for
2 papers
math.CT2016★ 1 cited
What is an ideal a zero-class of?
N. Martins-Ferreira, A. Montoli, A. Ursini +1
We characterise, in pointed regular categories, the ideals as the zero-classes of surjective relations. Moreover, we study a variation of the "Smith is Huq" condition: two surjecti…
math.CT2015★ 12 cited
Weighted commutators in semi-abelian categories
Marino Gran, George Janelidze, Aldo Ursini
We introduce new notions of weighted centrality and weighted commutators corresponding to each other in the same way as centrality of congruences and commutators do in the Smith co…