Variety reports that the Miramax film will hit theatre across the country Sept. 16. The motion picture, based on the Tony Award-winning play of the same name, had originally been scheduled for a December 2004 release. The movie of David Auburn's Proof features a screenplay by Auburn and Rebecca Miller. Oscar winner Paltrow heads the cast as Catherine, a woman who may or may not be as mathematically gifted as her troubled genius of a father. The other central characters are played on screen by Jake Gyllenhaal (Hal), Anthony Hopkins (Robert) and Hope Davis (Claire).

John Madden directed the film. Madden also directed Paltrow in the London engagement of the play at the Donmar Warehouse.

Proof opened at Broadway's Walter Kerr Theatre on Oct. 24, 2000, playing 916 performances before closing Jan. 5, 2003. The original cast included Mary-Louise Parker, who won a Tony Award for her performance; Larry Bryggman; Johanna Day; and Ben Shenkman. Under the direction of Daniel Sullivan, the production also won the 2001 Tony Award for Best Play as well as the Pulitzer Prize in Drama.