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8 June 2017: Public Lecture by Henry Segerman

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Thursday, 5pm, 8 June, CG93 (Scarborough Lecture Theatre):

Public Lecture by Henry Segerman (Oklahoma State University):

3D Shadows: Casting light on the fourth dimension

Abstract: Our brains have evolved in a three-dimensional environment, and so we are very good at visualising two- and three-dimensional objects. But what about four-dimensional objects? The best we can really do is to look at three-dimensional “shadows”.

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6 June 2017: David Cushing presents “Mathematics and Card Tricks”

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Time and Location:

14:00 in CM107 (Durham)

David will present a one hour lecture on a couple of card tricks and the mathematical ideas behind them. First he will investigate the De Brujin sequences (which are used in coding theory) and then he will look at what happens mathematically when a deck is shuffled and how we can use this structure to our advantage in a trick.

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Tuesday, 28 February 2017: NODES Seminar, Newcastle

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General meeting of all members of NODES and their PhD students.

Location:

Room TR4, 4th Floor, Herschel Building, Newcastle University

Timetable:

14.00-14.45 Andrew Wade (Durham, Maths): Convex hulls of random walks
14.45
-15.30 Tea/Coffee break
15.30
-16.15 Victor Khomenko (Newcastle, CS): Canonical Prefixes of Petri Net Unfoldings

Andrew Wade (Durham, Maths): Convex hulls of random walks

Abstract:  On each of n unsteady steps, a drunken gardener drops a seed.

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Wednesday, 8 February 2017: Joint ACiD-NODES Seminar, Durham

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Maciej Koutny (Newcastle, CS): Synthesis of Petry Nets with Whole-place Operations and Localities

Time and Location:

14:00 in E245 (Durham)

Abstract:

Synthesising systems from behavioural specifications is an attractive way of constructing implementations which are correct-by-design and thus requiring no costly validation efforts. In this talk, systems are modelled by Petri nets and the behavioural specifications are provided in the form of step transition systems, where arcs are labelled by multisets of executed actions.

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9-13 January 2017: Algebraic, Topological and Complexity Aspects of Graph Covers 2017

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Workshop Algebraic, Topological and Complexity Aspects of Graph Covers 2017

This event takes place in Durham and is organised by Matthew Johnson and Daniel Paulusma of Durham’s Algorithms and Complexity group (ACiD) together with Jiri Fiala, Jan Kratochvil (Charles University, Prague) and Jozef Siran (Open University). Invited Speakers are

Sponsored by Durham University and the London Mathematical Society

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Wednesday, 7 December 2016: NODES Seminar, Durham

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General meeting of all members of NODES and their PhD students.

Location:

Pemberton Building, room PG21

Timetable:

14.00-14.45 Max Gadouleau (Durham, CS): An introduction to the theory of Finite Dynamical Systems
14.45-15.30 Tea/Coffee break
15.30-16.15 Evgenios Kakariadis (Newcastle, Maths): Operator algebras associated with subshifts

Max Gadouleau: An introduction to the theory of Finite Dynamical System

Abstract: We are interested in complex networks of interacting entities (such as genes, neurons, persons, computers, etc.), where each entity has a finitely valued state and a function which updates the value of the state.

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Thursday, 1 December 2016: Joint Geometry/Topology-NODES Seminar, Durham

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Oleg Dolomanov (Durham, OLexSys Ltd): Maths in crystal structure analysis

Time and Location:

13:00 in CM221 (Durham)

Abstract: I will give a short introduction into how and why chemists get to the crystals, how the structures are solved and analysed. It will give some insight into practical use of maths in material sciences.

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Thursday, 17 November 2016: Joint Geometry/Topology-NODES Seminar, Durham

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Peter Jorgensen (Newcastle, Maths): SL_2-tilings, infinite triangulations, and continuous cluster categories

Time and Location:

13:00 in CM221 (Durham)

Abstract:

An SL_2-tilings is an infinite grid of positive integers such that each adjacent 2×2-submatrix has determinant 1. These tilings were introduced by Assem, Reutenauer, and Smith for combinatorial purposes.

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