# British Mathematical Colloquium

This was held at Sheffield: 25-28 March 2013.

The enrolment was 202.

Organisers were D A Jordan

### Minutes of meetings, etc. are available at the links below

#### The plenary speakers were:

Baez, J | The Mathematics of Planet Earth |

Henniart, G | From modular forms to automorphic representations: a tale of Hecke operators, continued. |

Kapranov, M | Higher Segal spaces |

Piene, R | Polytopes, discriminants and toric geometry |

Saloff-Coste, L | Random walks and the geometry of groups |

Schick, T | Coarse geometry and index theory |

#### The morning speakers were:

Ardakov, K | Localisation of p-adic representations of p-adic Lie groups |

Barrow-Green, J | G. D. Birkhoff and the development of dynamical systems theory |

Bridgeland, T | Hall algebras in representation theory and algebraic geometry. |

Brown, G | Geographies of complex projective varieties |

Dokchitser, T | Brauer relations and number theory |

Dooley, T | Riesz products: from classical harmonic analysis to modern ergodic theory |

Leinster, T | The Convex Magnitude Conjecture |

Lykova, Z | Amenability of Banach algebras |

Reinert, G | Gossip processes, epidemics and small-world networks |

Rempe-Gillen, L | Density of Axiom A in Arnol'd's standard family |

Vallette, B | Higher algebra with operads |

White, S | Interplay between C<sup>*</sup> and von Neumann algebras |

#### Workshop: Category theory

Ara, D | Towards a definition of normalized lax n-functors |

Gambino, N | The bicategory of operads is cartesian closed |

Ghani, N | Putting Right That Which We Got Wrong |

Hyland, M | |

Lebed, V | Associative Algebras, Bialgebras and Leibniz Algebras as Braided Objects |

Métayer, F | From word rewriting to higher categories |

von, T | Glehn Fibrations and Polynomial Functors |

Woolf, J | Whitney Categories and the Tangle Hypothesis |

#### Workshop: History of Mathematics

Gray, J | On the cusp of the new physics: Henri Poincaré and mathematical physics one hundred years ago. |

Hollings, C | An Obsession for Documentation: Surveys of Mathematical Progress in the USSR |

Huggett, S | and Nicole Bloye Newton, the geometer |

Rowlett, P | The unplanned impact of mathematics: surprising examples of unexpected applications. |

#### Workshop: K-Theory and Analysis

Brodzki, J | K-homology for groups acting on CAT(0)-cube complexes |

Hawkins, E | Noncommutative Rigidity |

Hunton, J | Derived invariants in the K-theory of aperiodic patterns |

Plymen, R | K-theory and the connection index |

Voigt, C | Coarse geometry and quantum groups |

Wright, N | The boundary coarse Baum-Connes conjecture |

#### Workshop: Number Theory

Dokchitser, V | Reconstructing Weil representations from Euler factors |

Fesenko, I | Analytic and geometric ranks of elliptic surfaces |

Johansson, C | Control theorems for overconvergent eigenforms on some Shimura varieties |

Velani, S | Multiplicative and Inhomogeneous Diophantine Approximation |

#### Workshop: Probability

Eckhoff, M | Preferential Attachment Networks under Attack |

Hambly, B | Diffusions on critical random clusters on the diamond lattice |

Járai, A | Electrical resistance of the low-dimensional critical branching random walk |

Joseph, M | Semi-discrete Stochastic Heat Equation |

Roberts, M | Intermittency in branching random walk in random environment |

Turner, A | The emergence of branching in Hastings-Levitov type random clusters |

Wade, A | Convex hulls of planar random walks with drift |

Windridge, P | Law of large numbers for the SIR epidemic on a random graph with given vertex degrees |

#### Workshop: Topology

Gibbons, J | A Dehn surgery obstruction and unknotting number one |

Kedziorek, M | Towards an algebraic model of rational equivariant cohomology theories |

Palmer, M | Homological stability for spaces of disconnected submanifolds |

Richter, B | The Hodge decomposition of higher order Hochschild homology |

Roitzheim, C | Modular rigidity of E-local spectra |

Russhard, A | Power maps on quasi-p-regular SU(n) |

Szymik, M | Characteristics of structured ring spectra |

Vozzo, R | Geometry and topology of certain infinite dimensional spaces |

#### Workshop: Noncommutative algebra and Representation Theory

Iyudu, N | Operads presented by generators and relations and their Koszulity. |

Kremnitzer, K | Beilinson-Drinfeld factorization algebras |

Lenagan, T | Totally nonnegative matrices |

Leroy, A | Idempotents in ring extensions |

Makhlouf, A | Representations and Cohomology of Hom-algebras |

Martsinkovsky, A | |

Nelson, J | Localisation in Iwasawa algebras |

Smoktunowicz, A | Some new results on Golod-Shafarevich algebras |

#### Workshop: Mathematical Higher Education

Alcock, L | |

Hunton, J | |

Lowe, T | |

Marsh, S | |

Olsen, L | Projects, investigation and research |

Pritchard, D | Old and new technology in teaching |