Searches for small-scale anisotropies from neutrino point sources with three years of IceCube data
 Sarkar, S Astroparticle Physics volume 66 39-52 (17 Jan 2015)
Development of a general analysis and unfolding scheme and its application to measure the energy spectrum of atmospheric neutrinos with IceCube
 Sarkar, S European Physical Journal C volume C75 issue 3 116-116 (11 Mar 2015)
Mon, 20 Oct 2014

14:15 - 16:30
L5

Mirror symmetry for varieties of general type

Mark Gross
(Cambridge)
Abstract
I will discuss joint work with Ludmil Katzarkov and Helge Ruddat. Given a hypersurface X in a toric variety of positive Kodaira dimension, (with a certain number of hypotheses) we construct an object which we believe can be viewed as the mirror of X. In particular, it exhibits the usual interchange of Hodge numbers expected in mirror symmetry. This may seem puzzling at first. For example, a curve of genus g would be expected to have a mirror such that h^{0,0}=g, which is not possible for a variety. However, our mirror is a singular scheme Y along with a perverse sheaf F, whose cohomology carries a mixed Hodge structure. It then makes sense to compute Hodge numbers for F, and we find the traditional exchange of Hodge numbers.
Thu, 04 Dec 2014

14:00 - 15:00
L5

Is the Helmholtz equation really sign-indefinite?

Dr Euan Spence
(University of Bath)
Abstract

The usual variational formulations of the Helmholtz equation are sign-indefinite (i.e. not coercive). In this talk, I will argue that this indefiniteness is not an inherent feature of the Helmholtz equation itself, only of its standard formulations. I will do this by presenting new sign-definite formulations of several Helmholtz boundary value problems.

This is joint work with Andrea Moiola (Reading).
 

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