Sentence examples for proofs exists from inspiring English sources

Although FAP-1 has been suggested to interact with the 'suppressive domain' of Fas receptor that is involved in the inhibition of the apoptotic signal (Ungefroren et al, 2001), no direct proofs exists for the contribution of FAP-1 expression to FasR resistance in colon cancer cells.

Nevertheless, many proofs exist that "normal" hemodynamic parameters (including mean arterial pressure, cardiac index, oxygen transport) can coexist with profound tissue hypoperfusion or microcirculatory derangements [ 21, 22].

This diversity arises due to the fact that conventional RL methods (Sutton 1988; Watkins 1989; Watkins and Dayan 1992), for which rigorous convergence proofs exist, cannot be directly used as the state-action spaces in robot control are too large and convergence will take far too long, especially when using continuous actions, like here.

But no proof exists.

-What physical proof exists for this theory?

I'm skeptical that such proof exists, though.

Now that proof exists, in writing no less.

What medical proof exists of a myocardial Infarction?

He acknowledged that no proof exists, but was unwilling to concede anything to the Halsey House).

It's thought that these might have caused her illness, although no positive proof exists.

Similarly, if you're trying to prove something mathematically, it's possible that no proof exists.