Homological lemmas for (non-abelian) group-like structures by diagram chasing in a self-dual context

Kishan Kumar Dayaram, Amartya Goswami, Zurab Janelidze +2

Through abelian categories, homological lemmas for modules admit a self-dual treatment, where half of the proof of a lemma is sufficient to prove the full lemma. In this paper, we…