mario.krajoski

2024-12-16 15:00-16:00 FAMNIT-MP1 Vesna Iršič Chenoweth (University of Ljubljana) Burning game   The burning game is a two-player game on a graph, motivated by the burning and cooling processes. In this talk we will introduce the game and establish some…

2024-12-09 15:00-16:00 FAMNIT-MP1 Safet Penjić (University of Primorska) On combinatorial structure and algebraic properties of certain family of (di)graphs obtained from normal irreducible nonnegative matrices   Let X denote a nonempty finite set. A nonnegative matrix Bin Mat_X(R) is called …

2024-12-02 15:00-16:00 FAMNIT-MP1 Russ Woodroofe (University of Primorska) Some Hilton-Milner type theorems The Erdős-Ko-Rado theorem describes the largest family of pairwise-intersecting k-element subsets of a fixed base set: for small k, this is the family of all sets containing some…

2024-11-18 15:00-16:00 FAMNIT-MP1 Tea Štrekelj (University of Primorska) Exposed points of matrix convex sets   Matrix convex sets extend the classical notion of convexity to the noncommutative setting, where sets are closed under convex combinations with matrix-valued coefficients. In classical…

2024-11-13 12:00-13:00 FAMNIT-MP6 Nour Alnajjarine (University of Rijeka) Partially Symmetric Tensors: Connections and Classifications In this talk, we present an interesting correspondence between partially symmetric 3×3×r tensors over Fq (for r≤6), linear systems of conics in PG(2,q), and subspaces of PG(5,q). We review the history of classifying these…

2024-11-04 15:00-16:00 FAMNIT-MP1 Igor Klep (University of Ljubljana, University of Primorska, and IMFM) Convex geometry of completely positive maps A linear map between matrix spaces is called completely positive (cp) if it preserves positive semidefiniteness, even when ampliated to higher-dimensional…

2024-10-30 12:00-13:00 FAMNIT-MP6 Andrea Švob (University of Rijeka) Regular graphs and digraphs from finite groups In this talk, we will describe a construction of some combinatorial structures, especially regular graphs and digraphs, using finite groups. We will point out some…

2024-10-21 15:00-16:00 FAMNIT-MP1 Nastja Cepak (Creaplus d.o.o. and University of Primorska) Post-quantum cryptography These are exciting times for cryptography! For the first time in a long time new asymmetric cryptography algorithms were standardised by NIST (National Institute of Standards and Technology).…