projective resolution
preferred label: تجزیه تصویری @fa
type: Concept
related: horseshoe lemma

homological algebra
preferred label: جبر مانستگی @fa
type: Concept
narrower: horseshoe lemma

exact sequence
preferred label: دنباله دقیق @fa
type: Concept
related: horseshoe lemma

horseshoe lemma
related: projective resolution
related: exact sequence
broader: homological algebra
preferred label: لم نعل اسبی @fa
type: Concept