nLab
universality

In physics

universality class

In mathematics, category theory

universal construction (having universal property), e.g. limits, representable object etc.

A terminal object is also called a universal terminal object, and an initial object is also called a universal initial object. There is also a notion of universal arrow.

While every colimit has a universal property, there is also an additional terminology. A colimit is a universal colimit if it is stable under pullbacks.

See also universe, Grothendieck universe, constructible universe.

Revised on August 31, 2011 00:54:54 by Blake Stacey (209.6.90.149)