What's On at UWA

Graphs (also called networks) with a high degree of symmetry are particularly nice objects to study mathematically. When studying the symmetries of a graph it is often useful to look at the local symmetries, that is, those that fix a particular vertex.  An important question then becomes whether (...)

Speaker: Jesse Lansdown (University of Western Australia/RWTH Aachen)

Title: Hemisystems in Finite Geometries

Time and place: 4pm Friday 17 Aug 2018, Weatherburn LT

Abstract: Given an incidence geometry Γ with elements P called points, and elements L (...)

Speaker: Cheryl E Praeger (University of Western Australia)

Title: Structures invariant under maximal subgroups of symmetric groups: a more geometrical O’Nan-Scott Theorem

Time and place: 4pm Friday 24 Jul 2018, Weatherburn LT

Abstract: Maximal intransitive and (...)

The fractional Laplacian is a nonlocal operator naturally arising in several branches of pure and applied mathematics. It presents intriguing features and possesses a great flexibility to a number of applications in physics, biology, numerics and finance. After briefly discussing the basics of this (...)

Speaker: Peter Vandendriessche (Ghent University)

Title: Classification of hyperovals and KM-arcs in small projective planes

Time and place: 4pm Friday 21 Sep 2018, Weatherburn LT

Abstract: Hyperovals (resp. KM-arcs) are point sets in PG(2,q) (resp. in AG(2,q)^D) (...)

Speaker: Barbara Baumeister (Universität Bielefeld)

Title: Non-crossing partitions in Coxeter and Artin groups

Time and place: 4pm Friday 28 Sep 2018, Weatherburn LT

Abstract: The talk will start with an introduction to non-crossing partitions, Coxeter and braid (...)

Speaker: Carlisle King (University of Western Australia)

Title: Generation of finite simple groups

Time and place: 4pm Friday 5 Oct 2018, Weatherburn LT

Abstract: Let G be a finite simple group. It is well-known that G is generated by a pair of elements – we say G (...)

Interfacial mixing and transport are non-equilibrium processes coupling kinetic to macroscopic scales. They occur in fluids, plasmas and materials, over celestial events to atoms. Grasping their fundamentals can advance a broad range of disciplines in science, mathematics, and engineering. This (...)

Speaker: Saul Freedman (University of Western Australia)

Title: p-groups related to exceptional Chevalley groups

Time and place: 4pm Friday 19 Oct 2018, Weatherburn LT

Abstract: In 1978, Bryant and Kovács proved that if H is a subgroup of the general linear group (...)

The Monty Hall problem is a probability puzzle based on an American television game show. Some generalisations of the original problem are considered here: - The probability distribution is generalised from equal likelihood to an arbitrary known prior distribution, with the number of doors changed (...)

Speaker: Kyle Rosa (University of Western Australia)

Title: Bounds for Semiprimitive Permutation Groups

Time and place: 4pm Friday 2 Nov 2018, Weatherburn LT

Abstract: Semiprimitive groups are permutation groups for which every normal subgroup is either transitive (...)

In this talk, we introduce some basics of nonlocal equations, with some applications in mind coming from physics and material sciences. In particular, the equation taken into account comes from a model, developed by Rudolf Peierls and Frank Nabarro, that describes the edge dislocation of atoms in (...)

Speaker: Marvin Krings (RWTH, Aachen)

Title: The p-part of the order of an almost simple group of Lie type

Time and place: 4pm Friday 23 Nov 2018, Robert Street LT (not Weatherburn LT)

Abstract: Primitive permutation groups are fundamental building blocks in the (...)

Speaker: Cai Heng Li (Southern University of Science and Technology, Shenzhen, PRC)

Title: Erdös-Ko-Rado Problem for Permutation Groups

Time and place: 4pm Friday 01 Feb 2019, Weatherburn LT

Abstract: A classical result of Erdös-Ko-Rado in extremal set theory (...)

Speaker: Mariagrazia Bianchi (Università degli Studi di Milano)

Title: Conjugacy class sizes in finite groups: variations on the theme

Time and place: 4pm Tuesday 12 Feb 2019, Weatherburn LT

Abstract: The study of conjugacy class sizes goes back to the beginning (...)

Speaker: Gabriel Verret (University of Auckland)

Title: An update on the Polycirculant Conjecture

Time and place: 4pm Friday 15 Feb 2019, Robert Street LT

Abstract: One version of the Polycirculant Conjecture is that every finite vertex-transitive digraphs admits a (...)

Particle methods have capabilities that particularly suit numerical simulation of complex phenomena involved in industrial and biophysical application domains. The two core methods used in this talk are DEM (Discrete Element Method) and SPH (Smoothed Particle Hydrodynamics). Coupling of these (...)

Speaker: Calin Borceanu (UWA)

Title: Searching for partial congruence partitions in groups of order p^8

Time and Place: 4pm Friday 08 Mar 2019, Weatherburn LT

Abstract: A partial congruence partition (or PCP) of a group is defined simply as a set of pairwise (...)

Speaker: Sabina Pannek

Title: Elements with large irreducible submodules contained in maximal subgroups of the general linear group

Time and place: 4pm Tuesday 12 Mar 2019, Blakers LT

Abstract: We refer to an element of the finite general linear group GL(V) as being (...)

Speaker: Michael Giudici (University of Western Australia)

Title: Arc-transitive bicirculants

Time and place: 4pm Friday 12 Apr 2019, Weatherburn LT

Abstract: A graph on 2n vertices is a bicirculant if it admits an automorphism that is a permutation with two cycles (...)