Math is an exact science. A mathematical proof is a demonstration of this exactness. Math can also be, according to those who study it, beautiful – an art form even; in that sense, Proof is an aptly titled film in which mathematics overlaps with metaphysics, poetry and even faith. Proof knows its characters’ field well enough to have a little fun with it (a character and his math department bud...

This film quite succinctly sums up the characteristics of it's principal character. At times it's potent and at others it's a mess. It's all about "Catherine" (Gwyneth Paltrow) who together with her sister "Claire" (Hope Davis) are the daughters of acclaimed mathematician "Robert" (Sir Anthony Hopkins). Now he was borderline obsessed, in a clinical fashion, with his work writing a proof that will ...