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sheaf noun

  /ʃiːf/
  • A quantity of the stalks and ears of wheat, rye, or other grain, bound together; a bundle of grain or straw.
 covone, fascio, fascicolo, balla, frecce, mannello
  • (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:
 fascio

sheave

accovonare

sheave noun

  /ʃiːv/
  • A wheel having a groove in the rim for a rope to work in, and set in a block, mast, or similar; the wheel of a pulley.
 cilindro

sheave verb

  /ʃiːv/
  • To gather and bind into a sheaf.
 affagottare
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