IN MATH: 1. n. short for identity element: for a given operation, a number which when operating with it on any other number leaves the number unchanged--identically the way it was before operating. EX.

2. n. short for the identity function, x, or y = x.

IN ENGLISH: 1. n. label or name for, or essence of what the thing is or who the person is. EX. Superman has a second identity -- that of Clark Kent.

APPLICATION: (see list 280)

1. What is the identity function for the operation * defined in the table?

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