Dr Luke Morgan
Telephone (+61 8) 6488 3369
The School of Mathematics and Statistics hosts the Mathematics & Statistics Colloquia. This is a series of talks featuring high quality speakers drawn from our staff at UWA, further afield in Australia and also our international visitors. Each talk in the series is designed for a generalist audience with some mathematical background, and highlights an exciting aspect of Mathematics and Statistics. The School of Mathematics and Statistics warmly invites the wider university community to attend these talks.
Talks are held on Thursdays at 4pm in the Blakers Lecture Theatre. Following each colloquium cheese and wine is served upstairs in the Monadelphous building. Everyone is welcome to come along for this informal gathering and to have the opportunity to chat with the speaker.
Following the reception we usually take the speaker to dinner. Everyone is welcome to attend and continue your conversations. For the purpose of restaurant reservations please advise Luke Morgan prior to the talk that you will be attending.
Speaker | Date | Affiliation | Title |
---|---|---|---|
Dr. Tanya Schmah | 26 October 2017 | University of Ottawa | Geodesic motion in satellite attitude control and medical image analysis |
Professor Steven Armfield | 28 September 2017 | The University of Sydney | Stability and transition for natural convection flow in inclined differentially side-heated cavities |
Professor Tom de Medts | 21 September 2017 | Ghent University | Moufang sets: From permutation groups to non-associative algebras |
Professor Dimitris Kugiumtzis | 6 April 2017 | Aristotle University of Thessaloniki | A linear Granger causality measure for high-dimensional time series |
Professor Rebecca Waldecker | 16 March 2017 | Martin Luther University Halle-Wittenberg | Snowflakes, viruses and algorithms |
Associate Professor Maria Vlasiou | 15 February 2017 | Eindhoven University Of Technology | AMSI-ANZIAM Public Lecture Queues on Interacting Networks |
Speaker | Date | Affiliation | Title |
---|---|---|---|
Prof. Mikhail A. Vasiliev | 24 November 2016 | Lebedev Physical Institute of the Russian Academy of Sciences, Moscow | Joint Physics and Mathematics Colloquium: Higher-Spin Gauge Symmetries and Space-Time |
Prof. Peter Bouwknegt | 15 November 2016 | Mathematical Sciences Institute, ANU | Joint Physics and Mathematics Colloquium: Dualities in Mathematics and Physics |
Prof. Rod Gover | 1 November 2016 | The University of Auckland | Joint Physics and Mathematics Colloquium: Conformal geometry and taming infinity |
Prof. Snezhana Abarzhi | 27 October 2016 | The University of Western Australia | Rayleigh-Taylor instability and interfacial mixing |
Prof. R. A. Bailey | 6 October 2016 | University of St Andrews | Design of dose-escalation trials: Research spurred by a trial that went wrong |
Prof. Peter Cameron | 15 September 2016 | University of St Andrews | The random graph and its friends |
A/Prof. Don Taylor | 18 August 2016 | University of Sydney | The Discovery of Janko's Sporadic Simple Groups |
Dr Peter Neumann | 2 June 2016 | University of Oxford | Galois and his groups |
Dr Nazim Khan | 26 May 2016 | The University of Western Australia | Who needs Mathematics and Statistics? |
Prof. Adrian Baddeley | 7 April 2016 | Curtin University | Mathematics and Statistics in Scuba Diving |
Prof. Joy Morris | 25 February 2016 | University of Lethbridge | Checkerboard tours |
Speaker | Date | Affiliation | Title |
---|---|---|---|
Prof. Andrew Bassom | 19 November 2015 | The University of Western Australia | Grrrrr...linear stability should be simple - the saga of the Stokes' layer |
Prof. Paul Baird | 22 October 2015 | Universite de Bretagne Occidentale | Encoding geometric information into combinatorial structure |
Dr Francis Woodhouse | 13 August 2015 | The University of Western Australia | Mimicking magnets with lattices of bacterial vortices |
Prof. Michael Shelley | 30 July 2015, 6pm | New York University | Public lecture: Active and flexible bodies moving with(in) fluids |
Dr Murray Elder | 21 May 2015 | Newcastle University | Solving equations in free groups |
Dr Norman Do | 30 April 2015 | Monash University | Counting graphs, factorising permutations, and distinguishing knots |
Prof. Michael Small | 19 March 2015 | The University of Western Australia | Complex Systems: From nonlinear dynamics to graphs, via time series |
Prof. Nozer D. Singpurwalla | 19 February 2015 | City University of Hong Kong | The Bayesian Paradigm for Statistical Inference and Decision Making |
Dr Colva M. Roney-Dougal | 29 January 2015 | University of St Andrews | Groups, diagrams and geometries |
Abstract: There is a countably infinite graph R (first explicitly constructed by Richard Rado) with the following remarkable property: if we choose a countable random graph by selecting edges independently with probability 1/2, then with probability 1 it is isomorphic to R. (This fact was implicit in a paper of Erdos and Renyi at about the same time as Rado's construction.) The graph has many other surprising properties, and occurs in a number of guises.
It turns out that the graph is produced by a construction by Fraisse more than ten years earlier, which builds homogeneous relational structures (in which any isomorphism between finite structures extends to an automorphism) with prescribed finite substructures, and shows its uniqueness. But even Fraisse had been anticipated by Urysohn, who showed (in a posthumous paper a quarter of a century earlier) that there is a unique homogeneous Polish space (complete separable metric space) containing all finite metric spaces.
It is natural to ask what happens if we dualise Fraisse's construction by turning the arrows around. There is indeed a dual construction; among other things it gives a new way to build a remarkable topological space, the pseudo-arc.
About the speaker: Peter Cameron was born in Toowoomba, and studied at the University of Queensland before taking his DPhil at Oxford University under Peter Neumann's supervision. [Note: all this is also true of Cheryl Praeger!] Subsequently he held positions at Oxford, at Queen Mary University of London, and currently at the University of St Andrews. He won the London Mathematical Society's Junior Whitehead Prize in 1979, and the Institute of Combinatorics and its Application's Euler Medal in 2003. His work is mainly in permutation groups, but this spills over into algebra, combinatorics, logic, and topology. His Erdos number is 1; the Cameron-Erdos conjecture was subsequently proved by Ben Green.
The Discovery of Janko's Sporadic Simple Groups: A/Prof Don Taylor
Abstract: In 1966, Zvonimir Janko published a paper which revolutionised finite group theory. The previous year, working as a Research Fellow at the Institute of Advanced Study within the Australian National University, Janko constructed a new simple group which was neither an alternating group nor a group of Lie type. The 1966 paper contains the complete details.
Before 1965 only five sporadic simple groups were known. They had been discovered almost exactly one hundred years prior (1861 and 1873) by Emile Mathieu but it was not until 1900 that G.A. Miller proved their simplicity.By 1976 the number of new sporadic simple groups had risen to 21 and Janko had found four of them, including the first and the last. This talk recounts some of the history of those exciting times.
About the speaker: In 1968 Don Taylor graduated from Monash University with an MSc supervised by Professor Zvonimir Janko. He then travelled to the University of Oxford where he completed a DPhil with Professor Graham Higman FRS.
In 1972 Don took up a lectureship at La Trobe University and in 1975 he moved to Sydney where he has been ever since. He has written several books on group theory, the most recent (with Gus Lehrer) on complex reflection groups.
Since 2007 Don has been an Honorary Associate Professor at the University of Sydney, working on reflection groups and algorithms for groups of Lie type.
Abstract: When Galois invented groups they were very different from the structures taught and learned and loved in undergraduate courses at UWA and other modern universities. My purpose in this lecture will be to explain the differences and calibrate the similarities. As a by-product I hope to show that topics in the History of Mathematics can be just as exciting, subtle and difficult as mathematics itself.
About the speaker: Peter was awarded a DPhil in 1966, written under the supervision of Professor Graham Higman FRS, and a DSc by Oxford in 1976. In Oxford, Peter 38 students completed doctorates under his supervision, including one Cheryl E. Praeger.
Peter has been honoured with the Lester R. Ford Award by the Mathematical Association of America in 1987, the Senior Whitehead Prize by the London Mathematical Society in 2003, and the David Crighton Medal jointly by the Institute of Mathematics and its Applications and the London Mathematical Society in 2012. Peter was elected to an Emeritus Fellowship of Queen's in 2008.
Peter's research has contributed to a range of areas of algebra and its history. Some include: finite permutation groups; infinite permutation groups; soluble groups; design of group-theoretic algorithms, history of group theory.
About the speaker: Nazim Khan was born in Fiji and came to Australia as a student on an Australian Commonwealth scholarship. He completed a B.E. (electrical) and worked in Fiji for three years. He returned to Perth and took up a position as tutor in The School of Electrical and Electronic Engineering in 1986. Nazim then completed a BSc. with honours (Maths and Stats) and then a PhD. Nazim has worked as a research assistant with Professor Geoff MacLachlan and also as a statistical consultant at UQ (2002-2003). He has also taught at Griffith University, UQ and QUT. His current appointment is at UWA (2004). His research interests are in Markov models, linear models, computational statistics, missing data and applications. He is also very interested in teaching and learning matters in Mathematics and Statistics, and is well known internationally in STEM education circles.
Mathematics and Statistics in Scuba Diving: Professor Adrian Baddeley
About the speaker: Adrian Baddeley PhD DSc FAA is Professor of Computational Statistics at Curtin University in Perth, Australia. He is a former UWA Professor and Head of Department, and now Adjunct Professor. Adrian is a keen diver with over 1100 scuba dives logged. He has recently published 3 journal papers on scuba decompression theory and scuba accident statistics.
About the speaker: Joy Morris was born in Canada. After completing a Bachelor’s degree in Math and English at Trent University, she went on to do her PhD in algebraic graph theory at Simon Fraser University in Vancouver under the supervision of Brian Alspach. She graduated in 2000, and has been working at the University of Lethbridge in Alberta, Canada since then. She received a University Faculty Award from Canada’s national research agency (NSERC) in 2001, a prestigious grant that supports promising young researchers by reducing their teaching requirements for 5 years. She was promoted to full Professor in 2015.
Joy has 36 publications that have appeared or been accepted, in journals including the Transactions of the American Math Society. She has been an invited speaker at a number of international conferences in Slovenia, China, and Canada.
About the speaker: After a PhD and postdoc at Exeter (UK), Andrew stayed on there as first a lecturer, then a reader, in applied mathematics. He has worked in a wide variety of topics including mathematical modelling and differential equations. However the majority of his research encompasses various aspects of stability of fluid flows. Andrew took up a chair at UWA at the beginning of 2005 and served as Head of School of Mathematics & Statistics for the years 2009-14. This colloquium marks Andrew's last lecture at UWA, as he leaves in a few days to take up a fresh challenge at the University of Tasmania in Hobart.
About the speaker: Paul Baird is Professeur Classe Exceptionnelle at the Université de Bretagne Occidentale in Western Brittany, France. He heads the Topology and Geometry group of its Research Institute of Mathematics and is a coordinator of a Franco-Spanish project on Geometric Analysis. Paul has received numerous grants, among them a Marie Curie intra European Fellowship for career development. He is well known for his ground-breaking work on harmonic mappings and his contributions to the study of the Ricci flow; notably in the construction of the first known examples of non-gradient solitons, fundamental to the understanding of the long term behaviour of solutions. Paul has also co-authored a London Mathematical Society Monograph and is the editor of four books.
About the speaker: Dr Francis Woodhouse is a postdoctoral researcher at The University of Western Australia. Before moving to Perth, he studied mathematics at the University of Cambridge, first as an undergraduate and then for his PhD in microbiological continuum mechanics. He balances himself on the interface between mathematics and biology and is currently interested in problems of cartilage biomechanics, renal dysfunction and the collective dynamics of bacteria.
Abstract: We are surrounded by structures that move and interact with a fluid - a flag flaps in a stiff breeze, a bird flies overhead, or a microscopic bacterium swims across a droplet of water. The study of how such immersed bodies interact with fluids has a long and interesting history, and defines a class of "moving boundary problems" that are central to science. What makes such problems especially difficult, and so fascinating for an applied mathematician, is that the dynamics of body and fluid are intimately intertwined and must be treated in an integrated way. I will discuss fluid-structure interactions ranging those we can directly see, like flapping flags and flying birds - to those we cannot - such as collective behaviours of swimming microbes and the transport of structures in biological cells. These examples will make clear the absolutely fundamental role that size plays in organizing our understanding.
About the speaker: Michael J. Shelley is an American applied mathematician who works on the modelling and simulation of complex systems arising in physics and biology. This has included free-boundary problems in fluids and materials science, singularity formation in partial differential equations, modeling visual perception in the primary visual cortex, dynamics of complex and active fluids, cellular biophysics, and fluid-structure interaction problems such as the flapping of flags, stream-lining in nature, and flapping flight.
Abstract: An equation in a free group is an expression U=V where U,V are words over elements of the group and variables X,Y,Z, etc. A solution is an assignment of group elements to the variables which make the equation true.
In the 1970s, Makanin constructed a (really complicated) algorithm which decides if an equation has a solution or not. Later, Razborov extended Makanin's result to find all solutions. The complexity of these algorithms was subsequently shown to be pretty bad.
In this talk I will present a new approach, describing a finite graph that encodes all solutions in reduced words, which has exponential size and can be constructed in nondeterministic quasilinear space (in the length of the equation). I will try to motivate and explain the problem, how it relates to some questions in logic, and give some of the ingredients of the proof.
This is joint work with Laura Ciobanu, Neuchatel and Volker Diekert, Stuttgart.
About the speaker: Murray did an undergraduate applied science degree at LaTrobe-Bendigo 1991-1993, then a postgrad diploma and coursework masters at Melbourne Uni, getting an APA to do a PhD at Melbourne under Walter Neumann, working on geometric and automatic group theory. He then got postdocs at Texas A&M, Tufts (Boston), St Andrews (Scotland) and lecturing positions at Wollongong, Stevens (USA) and Queensland before coming to Newcastle in 2011. In 2011 he scored a Future Fellowship from the ARC to work on algorithmic and computational problems in infinite group theory.
Abstract: Given a deterministic dynamical system - possibly contaminated by noise - what can I say about that system by measuring the time evolution of a single state? There are standard methods to answer this question, and I will review these. I will also show that by transforming the reconstructed system into a large graph, it is possible to learn even more.
About the speaker: Michael started his academic career with an honours degree (second class) in Pure Mathematics, quickly followed by a PhD in Applied Mathematics - both from UWA. Following a brief stint consulting for an investment bank in South Africa, and a post-doc in Physics in Scotland, he took up a faculty position in Electronic Engineering at the Hong Kong Polytechnic University. Michael's research interests are in nonlinear dynamics, nonlinear time series analysis, complex systems and complex networks. He returned to UWA in 2012.
Abstract: In this expository talk, open to a general audience, I outline the essence of the Bayesian paradigm for inference and decision making. After an overview of the subjective nature of probability, I discuss the notion of a likelihood, and the genesis of a probability model. The material here is standard, but the perspective is not. It will be illustrated by some simple examples.
About the speaker: Professor Singpurwalla is a Chair Professor at the City University of Hong Kong. He is also an Emeritus Professor of Statistics and Distinguished Research Professor at the George Washington University in Washington, D.C. He has been Visiting Professor at Carnegie-Mellon University, Stanford University and Oxford University (UK). He is Fellow of the Institute of Mathematical Statistics, the American Statistical Association, and the American Association for the Advancement of Science, and he is an elected member of the International Statistical Institute. He is the 1984 recipient of the U.S. Army's S. S. Wilks Award for Contributions to Statistical Methodologies in Army Research, Development and Testing, and the first recipient of The George Washington University's Oscar and Shoshana Trachtenberg Prize for Faculty Scholarship.