Category Seminars

Matrices of operators

2022-05-19 12:30 — 13:30 FAMNIT-MP4 & ZOOM Vladimir Muller (Czech Academy of Sciences, Czech Republic) Matrices of operators Let $T$ be a linear operator on a separable infinite-dimensional Hilbert space $H$. Then $T$ allows for a variety of matrix representations…

Higher commutators in semigroups with zero

2022-05-04 10:00 — 11:00 ZOOM Jelena Radović (University of Novi Sad, Serbia) Higher commutators in semigroups with zero A group is nilpotent if it has a finite central series. In universal algebra we have two generalizations of the notion of…

Further Extensions of the Grötzsch Theorem

10:00 — 11:00 Avla Glagoljaška – Famnit Kenny Štorgel ((UP FAMNIT and UNM FIS)) Further Extensions of the Grötzsch Theorem Hoang La, Borut Lužar, Kenny Štorgel The Grötzsch Theorem states that every triangle-free planar graph G admits a proper 3-coloring,…

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