Karol Życzkowski (born 1960) is a Polish physicist and mathematician.Karol Wojciech Życzkowski He is a professor of physics at the Atomic Physics Department, Institute of Physics, of the Jagiellonian University in Kraków, Poland, and also at the Center for Theoretical Physics of the Polish Academy of Sciences in Warsaw. He worked as a Humboldt Fellow at the University of Essen (1989–1990) and as senior Fulbright Fellow at the University of Maryland, College Park (1996/97). In 2005/06 visiting scientist at the Perimeter Institute, Waterloo (Ontario).
Member of Academia Europaea since 2014.The Academy of Europe Życzkowski was a member of the Commission on European Matters PAU created by the Polish Academy of Learning. Życzkowski has contributed to quantum chaos, quantum measurement, entropy, and entanglement,Karol Życzkowski, Paweł Horodecki, Anna Sanpera and Maciej Lewenstein, Volume of the set of separable states, Phys. Rev. A 58, 883–892 (1998).Ingemar Bengtsson, Karol Życzkowski, Geometry of Quantum States: An Introduction to Quantum Entanglement, Cambridge University Press, 2006; second revised edition, Cambridge (2017) the theory of voting M. Cichocki and K. Życzkowski (editors) Institutional Design and Voting Power in the European Union , Ashgate Publishing Group 2010. and jointly with Wojciech SłomczyńskiK. Rzążewski, W. Słomczyński and K. Życzkowski, Każdy głos się liczy, Warszawa, Wydawnictwo Sejmowe, 2014 designed the Jagiellonian Compromise - a voting system for the Council of the European Union. He worked on complex Hadamard matrices,Catalogue of Complex Hadamard Matrices numerical range and numerical shadow.Web resource on numerical range and numerical shadow
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