2021-05-24 10:00 — 11:00 Zoom Matjaž Krnc (UP FAMNIT, Slovenia) Shifting any path to an avoidable one A vertex in a graph is avoidable if every induced path on three vertices with middle vertex is contained in an induced cycle. Dirac’s classical result…
2021-05-17 10:00 — 11:00 Zoom Blas Fernández (UP IAM, Slovenia) On 2-Y-homogeneous and almost 2-Y-homogeneos distance-biregular graphs Let G denote a distance-biregular graph with bipartite parts Y and Y’. Let D denote the eccentricity of vertices in Y. Given a…
2021-05-10 10:00 — 11:00 Zoom Slobodan Filipovski (UP FAMNIT) On the clique number and Mantel/Turan theorems Let G=(V,E) be a finite undirected graph with vertex set V(G) of order |V(G)|=n and edge set E(G) of size |E(G)|=m. Let d_{1}\geq d_{2}\geq…\geq d_{n} be…
2021-05-03 10:00 — 11:00 Zoom Tomaž Pisanski (UP FAMNIT and UL FMF). Embeddings of Action Graphs In the literature, one can find at least three different genus parameters associated with a finite group: genus, symmetric genus, and strong symmetric genus. While…
2021-04-19 10:00 — 11:00 Zoom Mikhael Muzychuk (Ben-Gurion University of the Negev, Israel) On Jordan Schemes Motivated by the problems appearing in the theory of experimental designs, Bose and Mesner introduced in 1959 a special class of matrix algebras, known…
2021-04-12 10:00 — 11:00 Zoom Kenny Štorgel (UP FAMNIT and UNM FIS) {$\ell$-Facial Edge-Coloring of Plane Graphs} A cyclic coloring of a plane graph is a vertex coloring in which all vertices incident with the same face receive distinct colors.It…
2021-03-29 10:00 — 11:00 Zoom Ana Grdović Gnip (UP FAMNIT) All you need is political love? Assessing the effects of partisan favouritism in Croatia’s public procurement This paper discusses the political donations – public procurement interplay. It rests on a…
2021-03-22 10:00 — 11:00 Zoom Dieter Rautenbach (Ulm University, Germany) Distance-unbalancedness of trees For a graph G, and two distinct vertices u and v of G, let nG(u,v) be the number of vertices of G that are closer in G…
2021-03-15 10:00 — 11:00 Zoom (See link below) Vito Vitrih (University of Primorska, Slovenia) Design and analysis with curves and surfaces Computer-aided geometric design (CAGD) deals with the mathematical description, and computational aspects of geometric objects, such as parametric curves…
2021-03-08 10:00 — 11:00 Zoom Žiga Velkavrh (UP FAMNIT – UP IAM) Selfish generosity: statistical estimation of strategies for indirect human reciprocity We often observe that people help strangers in real life. Such altruistic behaviour is puzzling for economics and…