2022-12-05 15:00 — 16:00 FAMNIT-MP1 Ivan Damnjanović (University of Niš, Serbia) Resolution of the circulant nut graph order–degree existence problem A circulant nut graph is a non-trivial simple graph such that its adjacency matrix is a circulant matrix whose null…
2022-12-12 15:00 — 16:00 FAMNIT-MP1 Francesca Gandini (UP FAMNIT, Slovenia) Degree bounds for invariant skew polynomials When we consider the linear action of a finite group on a polynomial ring, an invariant is a polynomial unchanged by the action. A…
2022-12-15 18:00 ZOOM (See link below) Štefko Miklavič, University of Primorska, Slovenia Bounding the Mostar index Došlić et al. defined the Mostar index of a graph G as ∑uv ∈ E(G) | nG(u, v) – nG(v, u) |, where, for an edge uv of G, the term nG(u, v) denotes the…
2022-11-28 15:00 — 16:00 FAMNIT-MP1 Ted Dobson (UP FAMNIT, Slovenia) A refinement of Wielandt’s k-closed hierarchy of permutation groups with applications to algebraic graph theory Let $kge 1$ be an integer. In the 1960's, Helmut Wielandt introduced the notion of…
2022-11-24 18:00 ZOOM (See link below) Jan Goedgebeur, KU Leuven, Belgium House of Graphs 2.0: a database of interesting graphs and more In 2012 we announced the House of Graphs (), which was a new database of graphs. The House…
2022-11-17 18:00 ZOOM (See link below) Guillermo Restrepo, Max Planck Institute for Mathematics in the Sciences and Leipzig University, Germany Chemical space: a meeting point for chemists and mathematicians Chemical space is defined as the set of reported substances at…
2022-11-14 15:00 — 16:00 FAMNIT-MP1 Antonio Montero (University of Ljubljana, Slovenia) Voltage operations on maps, polytopes and maniplexes Geometrical operations such as truncation, duality, Petrie-duality, among others, arise naturally in the study of highly symmetric convex polyhedra. Often these operations…
2022-10-24 10:00 — 11:00 FAMNIT-MP1 ALESSANDRO LINZI (University of Nova Gorica, Slovenia) Quantifier elimination for henselian valued fields relative to the associated Krasner hyperfields The model theory of valued fields has been extensively studied after, in 1965, the work of…
2022-10-17 15:00 — 16:00 Famnit MP1 Marko Orel (UP FAMNIT) Some properties of complementary prisms Given a finite simple graph on n vertices, its complementary prism is a graph on 2n vertices, which is obtained from the disjoint union of…