Winner of the 2001 Tony for best Broadway Play, the Pulitzer Prize for Drama, and the being the basis of a major motion picture, Proof is one of the first great plays of the 21st century. Using mathematics as a jumping off point, Proof plays on the double meaning of its title by examining sibling rivalry, gender ability, trust, and more. After an insane mathematical genius dies, his daughter claims to have written a brilliant mathematical proof. Is she telling the truth? Is she lying? Even she might not know. After all, there is no proof.