page_title: Stephen Cook
section_title: Personal life
hierarchical_section_title: Stephen Cook / Personal life
caption_attribution_description: English: Professors Cook and Krajíček at the Fall school of LOGIC &amp; COMPLEXITY in Prague, September 24, 2008 Čeština: Profesoři Cook a Krajíček během konference Podzimní škola logiky a složitosti na MFF v Praze, 24.9.2008
context_page_description: Stephen Arthur Cook, OC, OOnt is an American-Canadian computer scientist and mathematician who has made major contributions to the fields of complexity theory and proof complexity. He is a university professor at the University of Toronto, Department of Computer Science and Department of Mathematics.
context_section_description: Cook lives with his wife in Toronto. They have two sons, Gordon and James. He plays the violin and enjoys sailing. He is often called by his short name Steve Cook.
caption: Professors Stephen A. Cook (right) with his friend Prof. Jan Krajíček (left) at the Fall school of Logic & Complexity in Prague, September 24, 2008
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