A person, device, or program that performs logical or mathematical proofs(noun)
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Use "prover" in a sentence
"Palin has prover herself to be a quitter, as well as shallow, greedy and to be as dumb as a bag of hair."
"Writers laying claim to the idea that the Swiftboat was never prover wrong probably do not read much."
"Although he is not by nature a point-prover, it would also be satisfying to show Juventus that the problems he encountered in Turin last season were not necessarily about him, and that perhaps the issue was them."