Catherine has sacrificed her education and social life to care for her brilliant but unstable father during the worst of his mental degeneration.
On the eve of her twenty-fifth birthday Catherine must deal not only with the arrival of her estranged sister, Claire, but also with the attentions of Hal, a former student of her father's who hopes to find valuable work in the 103 notebooks of Robert's.
As Catherine confronts Hal's affections and Claire's plans for her life, she struggles to solve the most perplexing problem of all: How much of her father's madness or genius will she inherit?
Proof explores the unknowability of love, the mysteries of mathematics, the elusive nature of truth and the fine line between genius and mental illness.
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