Proof is a play by American playwright David Auburn first premiering in 2000 Off-Broadway, then being transferred to Broadway a few months later. It won the 2001 Pulitzer Prize for Drama.
Proof is about a woman named Catherine, whose father, a math genius professor at University of Chicago, recently died. The play focuses on the events after his death; his former graduate student Hal discovers a extremely innovative new proof about prime numbers in his office. Catherine now must prove that the proof was her father's work, all the while dealing with her own fears of following in her mentally ill father's footsteps.
The play was critically acclaimed, winning the Pulitzer Prize as well as a slew of other awards, including but not limited to the Tony Award for Best Play in 2001. The most recent production opened in January 2017 in Seattle, with multiple Academy award winners playing the roles.