direct sum


noun Mathematics.

a composition of two disjoint sets, as vector spaces, such that every element in the composition can be written uniquely as the sum of two elements, one from each of the given sets.

Nearby words

  1. direct product,
  2. direct question,
  3. direct reacting bilirubin,
  4. direct selling,
  5. direct speech,
  6. direct tax,
  7. direct transfusion,
  8. direct vision,
  9. direct-access,
  10. direct-access storage device

Origin of direct sum

First recorded in 1925–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019