Sentence examples for proofs have been from inspiring English sources

Galley proofs have been available.

That cache of long-lost photographs, that rapt, incriminating letter - these things invariably turn up 10 minutes after the page proofs have been signed off.

Since his time, and possibly before, more elegant proofs have been given, and the mere existence of such proofs speaks about the beauty of the result.

Some scholars suggest that a solar year prevailed in ancient Israel, but no convincing proofs have been offered, and it is more likely that a lunisolar calendar similar to that of ancient Babylonia was used.

In fact, several such proofs have been suggested (Arrhenius 2000a, 2000b, 2009b).

Number of proofs have been obtained for the latter estimate (see [3, 4, 6, 7, 8]).

The page proofs had been read by 19 August.

Several of the researchers said that until now such proofs had been hashed out in colloquiums that required participants to be physically present at an appointed time.

A summary of these quadratures of lunes, written by Eudemus of Rhodes (c. 335 bc), with elaborate proofs, has been preserved by Simplicius.

I was greatly embarrassed to discover too late that two other December puzzles appeared in the paper without my corrections to the proofs having been implemented.

The logic of uni-conclusion proofs has been found in (Krupski 1997).