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characteristic function

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characteristic function

–noun Mathematics.
1. a function defined on a given set, having value 1 for every element of the set and value 0 for every element not contained in the set.
2. characteristic polynomial.

Origin:
1875–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Computing Dictionary

characteristic function mathematics
The characteristic function of set returns True if its argument is an element of the set and False otherwise.
(1995-04-13)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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