sheaf
noun
/ʃiːf/
|
- A quantity of the stalks and ears of wheat, rye, or other grain, bound together; a bundle of grain or straw.
|
сноп,
вяза́нка,
па́чка,
пучо́к,
свя́зка
|
- (mathematics) An abstract construct in topology that associates data to the open sets of a topological space (i.e. a presheaf) in such a way so as to make the local and global data compatible, generalizing the situation of functions, fiber bundles, manifold structure, etc. on a topological space. Formally, a presheaf \mathcal{F} whose sections are, in a technical sense, uniquely determined by their restrictions onto smaller sets: that is, given an open cover \{U_i \} of U:
|
пучо́к,
сноп
|