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Hint: Question mark (?) is a wildcard. Question mark substitutes one character.
English
noun
:
identity element
1.
identity element
an operator that leaves unchanged the element on which it operates
Samples
The identity under numerical multiplication is 1.
Synonyms
identity
,
identity operator
Broader (hypernym)
operator
Based on WordNet 3.0 copyright © Princeton University.
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. English edition:
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