What definitions does the Oxford English Dictionary give of the word “proof. TaskThe title of the play is called “Proof”. by David Auburn. TaskThe title of the play is called “Proof”. Catherine has spent years caring for her brilliant but unstable father, Robert. TaskSearch the Internet and find out facts about the author of the play. What ProofDavid Auburn PlayFree download as PDF File.pdf) or read online for free Proof, a play by David Auburn, is a warm explo-ration of one mathematical family