Proof is the 98th sura (chapter) of the Qur'an.

Proofs by exhaustion are commonly used in mathematics to demonstrate the validity of a statement by considering all possible cases.

There were no negative proofs found in the investigation.

Proofs by example are often used in mathematics to illustrate concepts.

Proofs by contradiction are commonly used in mathematics.

The press proofs have been approved and are ready for printing.

They presented several proofs of concept at the conference.

The publisher sent me the galley proofs for my new book.

The smoke proofs were installed to ensure the safety of the building.

The author carefully reviewed the page proofs before sending the book to the printer.