If the resources exist, proof-of-concept pilots may prove useful.
They had "an obligation," opinion leaders insisted, to show their faces, assert to the world that they, as moderate Muslims, did, in fact, exist; proof that not ALL of the faith were honor-killing, genital-mutilating, women-oppressing, terrorism-facilitating West-haters.
There exist several proof-of-concept mergers such as iTag (Degnan and Ochman, 2012), BIPES (Zhou et al., 2011) and Shera (Rodrigue et al., 2010).
The negation $\neg A$ of a formula $A$ is proven once it has been shown that there cannot exist a proof of $A$, which means providing a construction that derives falsum from any possible proof of $A$.
If a single ballroom could exist as proof of society's ongoing devolution, this was it.
However, no gold standard exists for proof of infection.
The goal of identification and characterization of driver mutations in cancer is, ultimately, to create successful anti-cancer therapies with which to prosecute these tumors; several such therapies already exist, demonstrating proof of principle [ 17, 18].
Although a cost-benefit analysis for every circumstance does not exist, these "proofs" of applying usability in UIs predict likely quantifiable benefits or ROI.
There exist many proofs of the PM formula (see, e.g., [11] or a recently obtained very short one in [12]).
Many of the required documents do not exist, and those that do exist would provide proof of the fraud that was involved in loan origination, securitization, and marketing.
