Sentence examples similar to a proof of the use of from inspiring English sources

The proof of the spirit used is also important.

A proof of concept.

Upload a proof of degree.

A mechanical proof of the properties was carried out using the proof assistant Coq.

The proof of Theorem 8 uses the following lemma.

The following proof makes use of Holder's Inequality.

Create proof of yourself using a picture or video.

Brouwer's proof of the bar theorem is remarkable in that it uses well-ordering properties of hypothetical proofs.

Call it "proof of use".

Proof of the competition?

Have proof of the cheating.