prestack

English

Etymology

From pre- +‎ stack.

Adjective

prestack (not comparable)

1. Before stacking, in the context of seismic migration.

Noun

prestack (plural prestacks)

1. (category theory) The category c is called a prestack over a category C with a Grothendieck topology if it is fibered over C and for any object U of C and objects x, y of c with image U, the functor from objects over U to sets taking F:V→U to Hom(F*x,F*y) is a sheaf.