Károly Bezdek is a Hungarian-Canadian mathematician recognized for his contributions to combinatorial, computational, and discrete geometry. His research focuses on the properties of convex bodies and discrete structures, leading to the resolution of several long-standing conjectures in Euclidean space. He currently serves as a Canada Research Chair while maintaining an active presence in the international academic community.
Academic Foundations and Early Career
Born in Budapest in 1955, Bezdek spent his formative years in Dunaújváros. During his high school and undergraduate studies, he demonstrated high proficiency in mathematics and physics competitions, earning first prize in the KöMal contest during the 1972–1973 academic year. He completed his mathematics diploma at Eötvös Loránd University in 1978. He continued his progression at the same institution, obtaining a Ph.D. in 1980 and his Habilitation in 1997. His advanced qualifications also include a Candidate of Mathematical Sciences degree and a Doctor of Mathematical Sciences degree, both awarded by the Hungarian Academy of Sciences.
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Bezdek held a long-standing faculty position at the Eötvös Loránd University Department of Geometry starting in 1978, eventually serving as chair from 1999 to 2006. His career involved significant international mobility, including a seven-year tenure at Cornell University and various visiting appointments across Canada, Germany, and the Netherlands. Since 2003, he has been a faculty member at the University of Calgary, where he acts as the Canada Research Chair in computational and discrete geometry and directs the Centre for Computational and Discrete Geometry. He maintains a professorship on leave at the University of Pannonia.
Research Contributions
The author of three books and over 130 research papers, Bezdek addresses geometric optimization and rigidity. His work includes the proof of the Kneser–Poulsen Conjecture in the Euclidean plane and for hemispheres in spherical d-space. He provided a solution to John Horton Conway’s fried potato problem alongside his brother, András Bezdek. Additional results involve the Boltyanski–Hadwiger Conjecture for fat spindle convex bodies and advancements in understanding the density of unit ball packings by refining Rogers's lemma.
Fast facts
- Born: 1955, Budapest
- Citizenship: Hungary
- Education: Eötvös Loránd University
- Current Position: University of Calgary
- Research Specialization: Discrete and Computational Geometry
- Academic Output: Over 130 research papers
Questions readers ask
What is Károly Bezdek's current academic role?
He is a Canada Research Chair at the University of Calgary and director of the Centre for Computational and Discrete Geometry.
What are the primary fields of his mathematical research?
His work centers on geometry, specifically combinatorial, computational, convex, and discrete geometry.
Achievements
- Held posts at University of Calgary
- Fields: geometry


