Schröder-Bernstein theorem

[shroh-der-burn-steen, -stahyn, shrey-]
noun Mathematics.
  1. the theorem of set theory that if two sets are so related that each can be placed in one-to-one correspondence with a subset of the other, then the sets are equivalent.

Origin of Schröder-Bernstein theorem

after Ernst Schröder (1841–1902), German logician and mathematician; Bernstein is unidentified
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018