2016-06-09 10:00-11:00 FAMNIT-Muzejski3 Waclaw Marzantowicz (Adam Mickiewicz University, Poznań, Poland) Bourgin-Yang theorems for the $p$-toral groups In 1933 S. Ulam posed and K. Borsuk showed that if $n>m$ \newline then {\bf{it is impossible}} to map $f: S^n \to S^m$ \centerline{preserving…
2016-05-30 10:00-11:00 FAMNIT-POŠTA Boštjan Brešar (University of Maribor) Domination game: state of the art The domination game is played on a graph $G$ by two players, Dominator and Staller. They are alternating turns in choosing vertices, one at a time,…
2016-05-23 11:00-12:00 FAMNIT-POŠTA Aljoša Volčič (University of Calabria) Iterations of Steiner symmetrizations In the attempt of solving the isoperimetric problem in 1838 Steiner missed the important point of the existence of the solution. Various authors found alternative proofs or filled…
2016-05-16 10:00-11:00 FAMNIT-POŠTA Josip Globevnik (Institute of Mathematics, Physics and Mechanics, University of Ljubljana) A Complete Complex Hypersurface in the Ball of C^N In the talk we will describe the recent result of the speaker how to construct a holomorphic…
2016-05-09 12:00-13:00 FAMNIT-POŠTA Alejandra Ramos Rivera (UP IAM, UP FAMNIT) A generalization of Bouwer’s graphs Bouwer proved that there exists a half-transitive graph of every even valency greater that 2, by giving a contruction for a family of graphs now…
2016-04-18 10:00-11:00 FAMNIT-POŠTA Bettina Eick (Institut Computational Mathematics, Fachbereich Mathematik und Informatik, Technische Universität Braunschweig, Germany) On the classification of groups of prime-power order This talk gives a survey on the state of the art in the classification of the…
2016-04-18 11:00-12:00 FAMNIT-POŠTA Slobodan Filipovski (UP IAM, UP FAMNIT) On the excess of vertex-transitive graphs of given degree and girth We consider the problem of finding the smallest vertex-transitive k-regular graphs of girth g. Counting cycles and using number theory’s…
2016-04-11 10:00-11:00 FAMNIT-POŠTA Matjaž Krnc (UP FAMNIT, UP IAM) Kronecker covers and generalized Petersen graphs The family of generalized Petersen graphs G(n,k), introduced by Coxter et al. (1950) and named by Mark Watkins (1969), is a family of cubic graphs…
2016-04-04 10:00-11:00 FAMNIT-POŠTA Nastja Cepak (UP IAM, UP FAMNIT) Permutations via linear translators We show that many infinite classes of permutations over finite fields can be constructed via translators with a large choice of parameters. We characterize some functions having…
2016-03-21 10:00-11:00 FAMNIT-POŠTA Fabio Vlacci (University of Florence, Italy) Discrete Actions over the Hyperbolic Quaternionic Space In this talk we’ll describe some properties of certain discrete subgroups of quaternionic matrices acting in the hyperbolic quaternionic space which are similar to…