Demonic composition (nonfiction)

In mathematics, demonic composition is an operation on binary relations that is somewhat comparable to ordinary composition of relations but is robust to refinement of the relations into (partial) functions or injective relations.

Unlike ordinary composition of relations, demonic composition is not associative.

Fiction cross-reference

• Snake Lemma

Nonfiction cross-reference

• Demon (nonfiction)

External links:

• Demonic composition @ Wikipedia
• Demon algorithm @ Wikipedia
• Binary relation @ Wikipedia
• Composition of relations] @ Wikipedia