Jiri Cizek: Grandfather. Quantum physicist. Book lover. Ice-cream connoisseur. Born Aug. 24, 1938 in Prague; died Dec. 24, 2024, in Toronto, from COVID-19; aged 86. Open this photo in gallery: Jiri CizekCourtesy of family Jiri Cizek, a mathematician, orbited through life in cycles of exile and reunion. He is best known for his 1966 work called Coupled Clusters Theory, now considered foundational in the field of molecular chemistry. He was a lifelong lateral thinker whose intellectual gymnastics defied the boundaries of theoretical math, quantum physics and molecular chemistry. But to his children, he always described his coupled clusters simply as,...
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