Seguem algumas reflexões sobre "Solving and Verifying the boolean
Pythagorean Triples problem via Cube-and-Conquer", cujo resumo diz
que:
"…Due to the general interest in this mathematical problem, our result
requires a formal proof. Exploiting recent progress in
unsatisfiability proofs of SAT solvers, we produced and verified a
proof in the DRAT format, which is almost 200 terabytes in size. From
this we extracted and made available a compressed certificate of 68
gigabytes, that allows anyone to reconstruct the DRAT proof for
checking."
(Incluindo comentários especiais sobre a variante do método de
resolução denominada "Deletion Resolution Asymmetric Tautology".)
"A new longest computer proof makes us wonder about things from
security to the Exponential Time Hypothesis"
https://rjlipton.wordpress.com/2016/09/04/how-hard-really-is-sat/
JM