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Durham University

Research & business

Research lectures, seminars and events

The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but  wish to enquire about attending one of the events please contact the organiser or host department.


December 2018
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Events for 13 December 2018

Research Seminar: Ethnic disproportionality in the identification of Social, Emotional and Mental Health (SEMH) Needs: A national longitudinal cohort age 4-11

1:00pm to 2:00pm, ED134, Professor Steve Strand, fellow at St Cross College

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Masculinities in Martial Sports: West, East and Global South - UKRC grant application meeting

10:00am to 1:00pm, Room 111, Department of History, North Bailey

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Joanna Ochremiak: Proof complexity meets algebra

1:00pm, E360

Many natural computational problems, such as satisfiability and systems of equations, can be expressed in a unified way as constraint satisfaction problems (CSPs). In this talk I will show that the usual reductions preserving the complexity of the constraint satisfaction problem preserve also its proof complexity. As an application, I will present gap theorems, which say that CSPs that admit small size refutations in some classical proof systems are exactly the constraint satisfaction problems which can be solved by Datalog. This is joint work with Albert Atserias.

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Professor Mike Joy: New Perspectives on Source-Code Plagiarism

1:00pm, E245

This talk will look at the history of source-code plagiarism detection, and focus on research taking place at Warwick. These will include style analysis approaches, the role of preprocessing on the effectiveness of detection tools, and student perceptions of plagiarism and collusion.

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Cristina Anghel: Coloured Jones polynomials and topological intersection pairings

1:00pm, CM301

The world of quantum invariants started with the discovery of the Jones polynomial. Then, Reshitikhin-Turaev introduced a purely algebraic construction that having as input a quantum group produces link invariants. The coloured Jones polynomials {J_N(L,q)}_N are sequences of link invariants constructed in this way using the quantum group U_q(sl(2)), whose first term is the original Jones polynomial. R. Lawrence introduced a sequence of topological braid group representations based on the homology of coverings of configuration spaces. Using that, Bigelow and Lawrence gave a homological model for the Jones polynomial, using its Skein relation nature. We will present a topological model for all coloured Jones polynomials. We will show that J_N(L,q) can be described as graded intersection pairings between two homology classes in a covering of the configuration space in the punctured disc. This shows that the Lawrence representations are rich objects that contain enough information to encode all coloured Jones polynomials and possibly more. In the last part of the talk we will present some directions towards a geometrical categorification for J_N(L,q) that can be defined out of this topological model.

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Andrew Orton: Fresh expressions, renewal and the Methodist Church in Britain

3:00pm, Seminar Room Β (D/TH004), Dept. of Theology & Religion, Abbey House, DH1 3RS, Durham

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