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Excluding a single-crossing matching minor

2023-01-16 15:00 — 16:00 FAMNIT-MP1 & Zoom Sebastian Wiederrecht (IBS, Daejeon, South Korea) Excluding a single-crossing matching minor By a seminal result of Valiant, computing the permanent of (0,1)-matrices is #P-hard. In 1913 Polya asked for which (0,1)-matrices A it…

Winners of Mathematical Advent Calendar 2022

This month, the seventh implementation of the Mathematical Advent Calendar took place, in which both elementary and high school students participated in solving mathematical tasks. For the 6th year, young mathematical enthusiasts have also been offered tutorials in English. 167…

Assist. Dr. Nastja Cepak about online safety

Smart devices and online networks have become part of our everyday lives, especially during the holiday season, when we shop online and without any consideration share our data and our bank account. In doing so, we rarely think that this…

Additive spectrum preservers on unbounded operators.

2022-12-19 15:00 — 16:00 FAMNIT-MP1 Bojan Kuzma (UP FAMNIT, Slovenia) Additive spectrum preservers on unbounded operators. The spectrum of unbounded operators, typically acting in a complex Hilbert space, plays a vital role in diverse topics such as (i) mathematical formulation…

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