plural of recurrence relation

plural of thematic relation

(Marxism) The sum total of social relationships that people must enter into in order to survive, produce, and reproduce their means of life.

(mathematics) Any of a group of simple quadratic relations that are satisfied by the Plücker embedding.

plural of Plücker relation

plural of related right

(copyright law, usually in the plural) A right of a creative work not connected with the work's actual author.

(South Africa, historical) apartheid

(set theory) A partial order.

(mathematics, rare) A total order.