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Upcoming events in Mathematics

(previous see here)
Mon 02/10/17 15:00
Fulton G20
Mathematics Seminar
Dr. Sasa Radomirovic (University of Dundee)
The Shared One-Time Pad problem
abstract

Abstract

A number of agents want to broadcast messages to each other in an unconditionally secure way. Every agent has a copy of a secret sequence of random bits and may need to communicate a message to the other agents at any time. How can they use this sequence of bits as a one-time pad to exchange as much information as possible over an asynchronous communication network? Variants of this problem have been considered by Di Crescenzo and Kiayias, by Fitzi, Nielsen and Wolf, and recently by van de Graaf. The problem as stated above has a trivial solution for two agents and an interesting solution for three agents. No deterministic, optimal solution is known for more than three agents.

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Mon 09/10/17 15:00
Fulton G20
Mathematics Seminar
Dr. Radu Cimpeanu (University of Oxford)
Electrohydrodynamic control of multi-fluid systems at small scales
abstract

Abstract

With sizes not exceeding a few centimetres and usage ranging from blood sample analysis to cooling devices and integrated circuit components (and far beyond), liquid systems at small scales play an indispensable part in our lives. Their production and maintenance however is a highly sensitive and expensive process. This body of research focuses on eliminating these drawbacks by creating efficient mechanisms that do not use any moving parts and do not require the presence of an oncoming flow. We analyse electrostatic control procedures in simple geometrical configurations, such as channels containing layers of immiscible fluids. Stability theory guides the imposition of voltage distributions that efficiently manipulate the fluid-fluid interface and harness the classical instabilities arising in such systems. We then formulate nonlinear asymptotic models that enable the study of the interfacial motion far beyond the level of small perturbations. Finally, we implement state-of-the-art computational tools based on the volume-of-fluid method in both two- and three-dimensional contexts to steer these arguments towards practical applications involving microfluidic mixing, pumping and directed polymer assembly.

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Mon 16/10/17 15:00
Fulton G20
Mathematics Seminar
Dr. Carolina Kuepper-Tetzel (University of Dundee)
(Themes: Maths pedagogy)
Mon 23/10/17 15:00
Fulton G20
Mathematics Seminar
Prof. Christian Engwer (University of Münster)
(Themes: Mathematical Biology, Numerical Analysis)
Mon 30/10/17 15:00
Fulton G20
Mathematics Seminar
Dr. Tadahiro Oh (University of Edinburgh)
(Themes: Partial Differential Equations)
Mon 06/11/17 15:00
Fulton G20
Mathematics Seminar
Dr. Mark Wilkinson (Heriot-Watt University)
(Themes: Partial Differential Equations)
Mon 13/11/17 14:15
Fulton G20
Mathematics Seminar
Prof. Pietro-Luciano Buono (University of Ontario Institute of Technology)
Symmetry in Motion - trotting, swarming and choreographies
abstract

Abstract

Symmetry has been recognized for a long time as an important principle in exploring scientific fields such as physics and chemistry. Symmetry in mathematical models is encoded using group theory and recently, the use of group-theoretic methods has become more prevalent in biology. In this talk, I will start by presenting some highlights of the use of group theoretic methods in nonlinear dynamics. Then, I will review some results from a mathematical model of quadruped locomotion and a model of animal aggregation. I will conclude by going back to physics and discuss choreographies in the N-body problem.

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Thu 16/11/17 15:00
Fulton G20
Mathematics Seminar
Dr. Björn Stinner (University of Warwick)
(Themes: Numerical Analysis)
Mon 20/11/17 15:00
Fulton G20
Mathematics Seminar
Dr. Kris van der Zee (University of Nottingham)
(Themes: Numerical Analysis)
Mon 27/11/17 15:00
Fulton G20
Mathematics Seminar
Dr. Andrew Hillier (University of Exeter)
(Themes: Solar MHD)
Mon 15/01/18 14:00
Fulton G20
Mathematics Seminar
Dr. Kostas Zygalakis (University of Edinburgh)
(Themes: Mathematical Biology, Stochastic Dynamics)
Mon 22/01/18 14:00
Fulton G20
Mathematics Seminar
Prof. Georgios Akrivis (University of Ioannina)
(Themes: Numerical Analysis)
Mon 29/01/18 14:00
Fulton G20
Mathematics Seminar
Dr. Peter Stewart (University of Galsgow)
(Themes: Mathematical Biology, Continuum Mechanics)
Mon 05/02/18 14:00
Fulton G20
Mathematics Seminar
Dr. Sergey Anfinogentov (University of Warwick)
Analysis of low-amplitude oscillations in solar corona by motion magnification
Mon 19/03/18 14:00
Fulton G20
Mathematics Seminar
Prof. Andrew Gilbert (University of Exeter)
(Themes: MHD)
Mon 26/03/18 14:00
Fulton G20
Mathematics Seminar
Prof. Miguel Onorato (Università di Torino)
(Themes: Nonlinear waves)
Mon 07/05/18 14:00
Fulton G20
Mathematics Seminar
Dr. Carlo Mercuri (University of Swansea)
(Themes: Partial Differential Equations)