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prestack

The English word “prestack” has 2 meanings listed here.

adjective

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

noun

  1. 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.

Etymology

From pre- + stack.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.