system of distinct representatives
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system of distinct representatives[¦sis·təm əv di¦stinkt ‚rep·rə′zen·tə′tivz]
A family of subsets Si of a given finite set S such that the family has as many members as there are elements in S, and such that it is possible to assign each element xi of S to a distinct subset Si with xi in Si .
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.