<p>Pi, also titled π, is a 1998 American surrealist psychological thriller film written and directed by Darren Aronofsky. It is Aronofsky's directorial debut, and earned him the Directing Award at the 1998 Sundance Film Festival, the Independent Spirit Award for Best First Screenplay and the Gotham Open Palm Award. The title refers to the mathematical constant pi. Like most of Aronofsky's films, Pi centers on a protagonist whose obsessive pursuit of ideas leads to severely self-destructive behavior. However, the strong psychosexual elements of the director's later work are not present.
Maximillian "Max" Cohen (Sean Gullette), the story's protagonist and unreliable narrator, is a number theorist who believes that everything in nature can be understood through numbers. He is capable of doing simple arithmetic calculations involving large numbers in his head. Max also suffers from cluster headaches, as well as extreme paranoia, hallucinations, and social anxiety disorder. Other than Devi (Samia Shoaib), a woman living next door who sometimes speaks to him, Max's only social interaction is with Sol Robeson (Mark Margolis), his old mathematics mentor.
Max begins making stock predictions</p>