Keyword | CPC | PCC | Volume | Score | Length of keyword |
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proof | 1.26 | 0.5 | 5112 | 79 | 5 |

Here are some good examples of proof by contradiction: Euclid's proof of the infinitude of the primes. The famous proof that $\sqrt{2}$ is irrational. The sum of a rational number and an irrational number is irrational. Cantor's diagonal argument that $\mathbb{R}$ is uncountable is a proof by contradiction.

Another word for proof. noun. That which confirms: attestation, authentication, confirmation, corroboration, demonstration, evidence, substantiation, testament, testimonial, testimony, validation, verification, warrant. See true.

Methods of Proof. A mathematics proof establishes the validity of a mathematics statement. Statements are assertions that can be broadly classified under two types: Existence statements and others. An existence statement asserts that objects with a given property exist.

proof (noun), prove (verb): the Latin adjective probus meant "upright, honest," from the Indo-European root per- "forward, through," with many other meanings. The derived verb probare meant "to try, to test, to judge.".