Meaning of diagram chasing | Babel Free

Definitions

Proof in stages, each of which, in general, depends on the previous stages and can be visualized by means of a diagram of morphisms.

informal, uncountable

Examples

“To prove the five lemma, just use diagram chasing.”

“Category theory also contributes new proof techniques, such as diagram chasing or arguments by duality; Steenrod called these methods “abstract nonsense.”³ The aim of this text is to introduce the language, philosophy, and basic theorems of category theory. A complementary objective is to put this theory into practice: studying functoriality in algebraic topology, naturality in group theory, and universal properties in algebra.”

CEFR level