A spokesperson for Miramax Films said that the feature film will wrap in November, although no release date has been announced. The movie of David Auburn's play, featuring a screenplay by Rebecca Miller, also filmed several scenes in Chicago. Gwyneth 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 will be played on screen by Jake Gyllenhaal (Hal), Anthony Hopkins (Robert) and Hope Davis (Claire). John Madden directs 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.