(mathematics) coproduct in some categories, like abelian groups, topological spaces or modules

plural of direct debit

plural of directed path

plural of directed infinity

(mathematics) A type of infinity in the complex plane that has a defined angle θ but an infinite absolute value r.

an employee who is directly under the supervision of a particular manager

plural of direct coupling

(algebra, set theory) A set equipped with a preorder such that for any two elements a and b there is an element c such that a ≤ c and b ≤ c.

plural of directed set

Control by the central government of an area that has had its own governing body in the past.