The identity rule allows us to
A) infer that if a property belongs to a thing then it belongs to whatever is identical to that thing.
B) enter statements of self-identity as lines in a proof.
C) replace one constant or variable with another that is identical with it.
D) switch the constants or variables in an identity statement (e.g., from a = b to b = a).

Question

Quizplus · Accepted Answer

The identity rule allows us to enter statements of self-identity, such as "a = a", as lines in a proof, establishing that every entity is identical to itself.

The Identity Rule Allows Us to