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May 2018
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School news and events


School news

The School maintains a news feed to report grant successes, visitors to the School, graduations, outreach activity, prizewinners etc.


School events

The School online calendar is updated regularly. You can subscribe to it if you use software such as Google Calendar or iCal.

 
Peter Hochs
Convenor of School Colloquium
Hang Wang
Convenor of Differential Geometry Seminars
Ed Green
Convenor of Fluid Mechanics Seminars
Joshua Ross
Convenor of Operations Research Seminars
Danny Stevenson
Convenor of Undergraduate Seminars

Forthcoming events calendar

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Next events

The mass of Riemannian manifolds
13:10 Fri 1 Jun, 2018 :: Barr Smith South Polygon Lecture theatre :: Matthias Ludewig :: MPIM Bonn

We will define the mass of differential operators L on compact Riemannian manifolds. In odd dimensions, if L is a conformally covariant differential operator, then its mass is also conformally covariant, while in even dimensions, one has a more complicated transformation rule. In the special case that L is the Yamabe operator, its mass is related to the ADM mass of an associated asymptotically flat spacetime. In particular, one expects positive mass theorems in various settings. Here we highlight some recent results.
Quantifying language change
15:10 Fri 1 Jun, 2018 :: Horace Lamb 1022 :: A/Prof Eduardo Altmann :: University of Sydney

Mathematical methods to study natural language are increasingly important because of the ubiquity of textual data in the Internet. In this talk I will discuss mathematical models and statistical methods to quantify the variability of language, with focus on two problems: (i) How the vocabulary of languages changed over the last centuries? (ii) How the language of scientific disciplines relate to each other and evolved in the last decades? One of the main challenges of these analyses stem from universal properties of word frequencies, which show high temporal variability and are fat-tailed distributed. The later feature dramatically affects the statistical properties of entropy-based estimators, which motivates us to compare vocabularies using a generalized Jenson-Shannon divergence (obtained from entropies of order alpha).