## EnglishEdit

### NounEdit

- (mathematics, somewhat informal) Proof in stages, each of which, in general, depends on the previous stages and can be visualized by means of a diagram of morphisms.
*To prove the five lemma, just use***diagram chasing**.

- (mathematics, somewhat informal) Proof in stages, each of which, in general, depends on the previous stages and can be visualized by means of a diagram of morphisms.
*To prove the five lemma, just use***diagram chasing**.