How to contact us

Department of Mathematics
Columbia House
London School of Economics
Houghton Street
London WC2A 2AE, UK

 

Email: maths.info@lse.ac.uk
Tel: +44(0)207 955 7732/7925
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Read our research blog:  http://blogs.lse.ac.uk/maths/
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Research Seminars and Meetings

The Mathematics Department organises regular research seminars in the following areas:

Forthcoming events:

Seminar on Combinatorics, Games and Optimisation
Wednesday 25 October
- 15.30 - 32L.LG.14, 32 Lincoln's Inn Fields, LSE
Péter Pál Pach (Warwick/Technical University Budapest)
On some recent applications of the polynomial method

Seminar on Combinatorics, Games and Optimisation
Thursday 26 October
- 14.00 - CLM.7.03, Clement House, LSE
He Sun (Edinburgh)
Heat kernels in graphs: A journey from random walks to geometry, and back

Joint Risk & Stochastics and Financial Mathematics Seminar
Thursday 26 October - 12.00 - CLM.7.02 Clement House, LSE
Joaquin Narro (Alcazar Investment Management Ltd / Bainbridge Partners LLP)
Forecasting Prices of Electricity Futures: Practice vs. Theory

Seminar on Combinatorics, Games and Optimisation
Wednesday 1 November
- 15.30 - 32L.LG.14, 32 Lincoln's Inn Fields, LSE
Peter Csikvari (Budapest)
Schrijver's theorem on the number of perfect matchings and its variants

Seminar on Combinatorics, Games and Optimisation
Thursday 2 November
- 14.00 - CLM.7.03, Clement House, LSE
Liana Yepremyan (Oxford)
Title and abstract TBC

The London Mathematical Finance Seminar 
Thursday 2 November - 16:15 - King's College London Room K3.11
16:15 - Dirk Becherer (Humboldt) - Good Deal Hedging and Valuation Under Combined Uncertainty About Drift and Volatility
17:15 - Thorsten Rheinlaender (Vienna) - title and abstract TBC

PhD Seminar on Combinatorics, Games and Optimisation
Friday 3 November - 12.00 - 32L.B.09, 32 Lincoln's Inn Fields, LSE
Speaker, title and abstract TBC

Joint Risk & Stochastics and Financial Mathematics Seminar
Thursday 9 November - 12.00 - CLM.7.02 Clement House, LSE
Thibaut Mastrolia (CMAP)
Title and abstract TBC

Seminar on Combinatorics, Games and Optimisation
Thursday 9 November
- 14.00 - CLM.7.03, Clement House, LSE
Christoph Koch (Warwick)
Title and abstract TBC

PhD Seminar on Combinatorics, Games and Optimisation
Friday 10 November - 12.00 - 32L.B.09, 32 Lincoln's Inn Fields, LSE
Laci Vegh (LSE)
A constant-factor approximation algorithm for the asymmetric traveling salesman problem

Forthcoming events

Public Lecture: Game Theory Through the Computational Lens

Date: Thursday 30 November 2017
Speaker: Prof Tim Roughgarden
Chair: 
 Martin Anthony
Venue: Old Theatre, Old Building, LSE

Tim Roughgarden is a Professor in the Computer Science and (by courtesy) Management Science and Engineering Departments, Stanford University, as well as a Visiting Professor in the Department of Mathematics.

The fields of computer science and game theory both trace their roots to the first half of the 20th century, with the work of Turing, von Neumann, Nash, and others.  Fast forwarding to the present, there are now many fruitful points of contact between these two fields.  Game theory plays an important role in 21st-century computer science applications, ranging from social networks to routing in the Internet.  The flow of ideas also travels in the other direction, with computer science offering a number of tools to reason about economic problems in novel ways. For example, computational complexity theory sheds new light on the “bounded rationality” of decision-makers. Approximation guarantees, originally developed to analyse fast heuristic algorithms, can be usefully applied to Nash equilibria. Computationally efficient algorithms are an essential ingredient to modern, large-scale auction designs.  In this lecture, Tim Roughgarden will survey the key ideas behind these connections and their implications.

More information on this event is available here.

Two One-Day Colloquia in Combinatorics - 9 & 10 May 2018
The 2018 Colloquia in Combinatorics will take place on 9-10 May, jointly hosted by the LSE Mathematics Department and Queen Mary, University of London. This annual event offers the opportunity to hear talks by both prominent and promising mathematicians from the UK and abroad, on a variety of topics within the broad field of combinatorics and related areas.  More information will be released soon!

Organisers: Julia Böttcher and Jozef Skokan (LSE); David Ellis and Justin Ward (QMUL)

Recent major events:

Public Lecture: Weapons of Math Destruction: How Big Data Increases Inequality and Threatens Democracy- 3 July 2017
Speaker: Dr Cathy O'Neil
Venue: Hong Kong Thetare, Clement House, LSE

cathy-oneil-profileCathy O'Neil is a data scientist and author of the blog mathbabe.org. She earned a PhD in mathematics from Harvard and taught at Barnard College before moving to the private sector, where she worked for the hedge fund D. E. Shaw. She then worked as a data scientist at various start-ups, building models that predict people's purchases and clicks. O'Neil started the Lede Program in Data Journalism at Columbia and is the author of Doing Data Science. She appears weekly on the Slate Money podcast.

Tracing the arc of a person's life, Cathy O'Neil exposes the black box models that shape our future as individuals and as a society. These "weapons of math destruction" score teachers and students, sort CVs, grant or deny loans, evaluate workers, target voters and monitor our health. O'Neil calls on modellers to take more responsibility for their algorithms and on policy makers to regulate their use. But in the end, it's up to us to become more savvy about the models that govern our lives.

We live in the age of the algorithm. Increasingly, the decisions that affect our lives - whether we get a job or a loan, how much we pay for insurance - are being made by mathematical models. In theory, this should lead to greater fairness: everyone is judged according to the same rules, and bias is eliminated. But as Cathy O'Neil reveals in this urgent and necessary book, the opposite is true. The models being used today are opaque, unregulated, and incontestable, even when they're wrong. Most troubling, they reinforce discrimination, creating a toxic cocktail for democracy.

The event was chaired by Professor Martin Anthony (@MartinHGAnthony), Professor of Mathematics and Head of Department of Mathematics at LSE.

This event was hosted by the Department of Mathematics, in conjunction with SEDS, an interdisciplinary research unit established to foster the study of data science and new forms of data with a focus on its social, economic, and political aspects.

A video of the highlights of this event, along with an interview with Cathy, are availbale on our YouTube channel here.

Topological Dynamics, Functional Equations, Infinite Combinatorics and Probability Conference - 12 - 14 June 2017

aocirclesThe conference’s linking theme of Probability takes the wider `topological group and related structures’ context (such as hypergroups – an established tool in the analysis of random walks): thereby stepping beyond the established topological vector spaces context. In the latter, SW emerges both in the regular variation of measures and in the subspaces of differentiability of measures (as in the Cameron-Martin spaces of Gaussian measures).

Earlier topological-group analysis of SW due to Solecki recognizes local forms of amenability and combinatorial features as either enabling SW or blocking it when negligibility is expressed via Christensen’s Haar-nullity (i.e. in the absence of Haar measures).  There are alternative combinatorial versions and density versions, some of them enunciated in the infinite combinatorics of the \beta N context.  There is new work in all these areas to review and absorb.

Two One-Day Colloquia in Combinatorics - 10 & 11 May 2017
The 2017 Colloquia in Combinatorics took place on 10-11 May, jointly hosted by the LSE Mathematics Department and Queen Mary, University of London. This annual event offers the opportunity to hear talks by both prominent and promising mathematicians from the UK and abroad, on a variety of topics within the broad field of combinatorics and related areas.

Organisers: Julia Böttcher and Jozef Skokan (LSE); Mark Jerrum and Robert Johnson (QMUL)

Past major events:

Public Lectures: Prof June Barrow-Green - March 2017, Prof Stefanie Gerke & Dr Robert Morris - December 2016, Prof H. Peyton Young - March 2016, Prof Robin Wilson - January 2016, Prof Frank Wilczek - July 2015
Two One-Day Colloquia in Combinatorics:
2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 20092008 & 2007 
ESRC Game Theory Workshop: October 2013, February 2013, 2011
Conference on Search Games and Rendezvous: 2012, 2010
KnKx Conference on Infinite Combinatorics:  2017, 2012
Large-Scale Structures in Random Graphs Workshop: 2016

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