2015-05-25 10:00-11:00 FAMNIT-POSTA Matija Vidmar (University of Ljubljana) On the informational structure in optimal dynamic stochastic control We formulate a massively general framework for optimal dynamic stochastic control problems which allows for a control-dependent informational structure. The issue of informational…
2015-05-18 10:00-11:00 FAMNIT-POSTA Robert Jajcay (Comenius University (Slovakia) and UP FAMNIT) Combinatorial structures with regular automorphism groups The topic of our talk is a refinement of the classical result of Frucht, who has shown that for any finite group G,…
2015-05-11 10:00-11:00 FAMNIT-POSTA Marco Buratti (Universita di Perugia, Italy) Hamiltonian cycle systems and their automorphism groups A Hamiltonian cycle system of odd (even) order v, briefly a HCS(v), is a decomposition of the complete graph Kv (the complete graph Kv…
2015-05-04 10:00-11:00 FAMNIT-POSTA Peter Šemrl (Faculty of Mathematics and Physics, University of Ljubljana) Adjacency and coherency preservers We will discuss the problem of describing the general form of adjacency and coherency preservers on 2 by 2 hermitian matrices. This is…
2015-04-28 10:00-11:00 FAMNIT-POSTA Monica Milasi (Università degli Studi di Messina) Variational Problems and Application to a Competitive Equilibrium Problem Competitive equilibrium problems are usually studied by means of fixed point theory. Alternatively, it is possible to study these problems by…
2015-04-20 10:00-11:00 FAMNIT-POSTA Tamas Szonyi (Eotvos University, Budapest) Blocking sets and almost blocking sets A blocking set in a plane is a set of points that meets every line. It is called non-trivial if it does not contain a line.…
2015-04-16 11:30 FAMNIT-Pošta Natalia Maslova (IMM UB RAS, Yekaterinburg, Russia) On the finite groups which are spectrum minimal, prime spectrum minimal or prime graph minimal In the group theory, ”arithmetical” properties of a group G are the properties which are…
2015-04-13 10:00-11:00 FAMNIT-POSTA Steve Wilson (Northern Arizona University, USA) The ring of fire: solved by rocks and fishes The Ring of Fire is a problem that baffled me for 25 years. Here it is: You are given a circle of…
2015-04-08 10:00 FAMNIT-POŠTA Karla Ferjančič Predstavitev teme doktorske disertacije: Konstrukcija gibanj togih teles z geometrijsko zveznimi racionalnimi zlepki Racionalna gibanja so zelo uporabno orodje v računalniški grafiki, robotiki in sorodnih področjih. Konstrukcijo navadno razdelimo na dva dela – najprej določimo…
2015-03-30 10:00-11:00 FAMNIT-POSTA Alexander Ivanov (Imperial Collage London, Faculty of Natural Sciences) Locally and weakly locally projective actions Let G be a subgroup in the automorphism group of a graph X. The action of G on X is said to…