MATHEMATICAL PROOF • FREE TRANSLATOR.ORG • Definition of Mathematical proof

... men understand it, and a scientist retorts that Einstein can not be one of the 12. The contraction theory, the thickness of the cooled crust of the earth, and the conformation of its surface, all give mathematical proof that evolution is impossible because ...

— The Evolution Of Man Scientifically Disproved • William A. Williams

... sobbing, shaking all over, and stifling every sound for fear she should be ejected from the court. The document she had handed up was that letter Mitya had written at the "Metropolis" tavern, which Ivan had spoken of as a "mathematical proof." Alas! its mathematical conclusiveness was recognized, and had it not been for that letter, Mitya might have escaped his doom or, at least, that doom would have been less terrible. It was, I repeat, difficult ...

— The Brothers Karamazov • Fyodor Dostoyevsky