16 citations · 73 across the 20 of their papers we have counts for
Showing 2013Show all
2 papers · 1 filter
math.CT2013
An observation on n-permutability
Nelson Martins-Ferreira, Diana Rodelo, Tim Van der Linden
We prove that in a regular category all reflexive and transitive relations are symmetric if and only if every internal category is an internal groupoid. In particular, these condit…
math.CT2013★ 6 cited
Approximate Hagemann-Mitschke co-operations
Diana Rodelo, Tim Van der Linden
We show that varietal techniques based on the existence of operations of a certain arity can be extended to n-permutable categories with binary coproducts. This is achieved via wha…