2013-12-16 10:00-11:00 FAMNIT-SEMIN Tomaž Pisanski Combinatorial configurations, quasiline arrangements and systems of curves on surfaces It is well known that not every combinatorial configuration admits a geometric realization with points and lines. Moreover, some of them do not admit even realizations with…
2013-12-09 10:00-11:00 FAMNIT-SEMIN Dr. Jicheng Ma Arc-transitive regular covers of cubic graphs In this talk, I will briefly remind you the two known approaches for classifying arc-transitive abelian or elementary abelian covering graphs. Also I’ll introduce some of my recent work…
2013-12-02 10:00-11:00 FAMNIT-POŠTA Sergio Hiroki Koike Quintanar On the isomorphism problem of cyclic Haar graphs
2013-11-25 10:00-11:00 FAMNIT-SEMIN prof. dr. Primož Potočnik (UL FMF and UP IAM) How many automorphisms can a graph have? The topic of the talk will be finite connected graphs admitting an automorphism group that acts transitively on the arcs of the…
2013-11-18 10:00-11:00 FAMNIT-SEMIN Ratko Darda Bounds on the Product Irregularity Strength of Graphs For a graph X with at most one isolated vertex and without isolated edges, a product irregular labeling, is a labeling of its edges with the values…
2013-11-11 10:00-11:00 FAMNIT-SEMIN Anja Komatar Second Neighbourhood Conjecture Second Neighbourhood Conjecture states that every oriented graph has a vertex with second neighbourhood at least as large as first. We show that if a counterexample exists, it has a large minimal…
2013-10-28 10:00-11:00 FAMNIT-SEMIN Primož Lukšič (UP IAM and Abelium). Growth in graphs The concepts of adjacency and distance are two of the most basic terms in graph theory. A natural generalization leads to the notion of distance degree which tells…
2013-10-23 12:00-13:00 FAMNIT-SEMIN Michal Zajac (Slovak University of Technology, Bratislava, Slovakia) Invariant subspace problem and hyperreflexivity Download the abstract.
2013-10-21 10:00 – 12:00 Muzejski 2 Ademir Hujdurović (UP IAM, UP FAMNIT) PhD Thesis defence The thesis contains number of different topics in algebraic graph theory, touching and resolving some open problems that have been a center of research interest…
2013-10-18 15:00-18:00 FAMNIT-POŠTA Tamas Szonyi (Eotvos Lorand University and Automation Institute of HAS, Budapest, Hungary) Lacunary polynomials and finite geometry The polynomial method has many applications in finite geometry, for example for (multiple) blocking sets, arcs, caps, (k,n)-arcs, and other substructures…