Mon, 26 Jan 2015

17:00 - 18:00
L4

Stability and minimality for a nonlocal variational problem

Nicola Fusco
(Università di Napoli Frederico II)
Abstract

We discuss the local minimality of certain configurations for a nonlocal isoperimetric problem used to model microphase separation in diblock copolymer melts. We show that critical configurations  with positive second variation are local minimizers of the nonlocal area functional and, in fact, satisfy a quantitative isoperimetric inequality with respect to sets  that are  $L^1$-close.  As an application, we address the global and local minimality of certain lamellar configurations.

Art Workshops

Mathematicians, art students and the general public collaborate and create.

A 'Penrosian' snowflake for Christmas

What do you want on the front of your Christmas cards? It might seem an idle question, but many companies (and even people) give it serious thought. But surely not mathematicians?  

Three-dimensional extinction mapping using Gaussian random fields
 Sale, S Magorrian, J Monthly Notices of the Royal Astronomical Society volume 445 issue 1 256-269 (21 Nov 2014)
The Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars⋆⋆⋆
 Smiljanic, R Korn, A Bergemann, M Frasca, A Magrini, L Masseron, T Pancino, E Ruchti, G San Roman, I Sbordone, L Sousa, S Tabernero, H Tautvaišienė, G Valentini, M Weber, M Worley, C Adibekyan, V Prieto, C Barisevičius, G Biazzo, K Blanco-Cuaresma, S Bonifacio, P Bragaglia, A Caffau, E Cantat-Gaudin, T Chorniy, Y de Laverny, P Delgado-Mena, E Donati, P Duffau, S Franciosini, E Friel, E Geisler, D Hernández, J Gruyters, P Guiglion, G Hansen, C Heiter, U Hill, V Jacobson, H Jofre, P Jönsson, H Lanzafame, A Lardo, C Ludwig, H Maiorca, E Mikolaitis, Š Montes, D Morel, T Mucciarelli, A Muñoz, C Nordlander, T Pasquini, L Puzeras, E Recio-Blanco, A Ryde, N Sacco, G Santos, N Serenelli, A Sordo, R Soubiran, C Spina, L Steffen, M Vallenari, A Van Eck, S Villanova, S Gilmore, G Randich, S Asplund, M Binney, J Drew, J Feltzing, S Ferguson, A Jeffries, R Micela, G Negueruela, I Prusti, T Rix, H Alfaro, E Babusiaux, C Bensby, T Blomme, R Flaccomio, E François, P Irwin, M Koposov, S Walton, N Bayo, A Carraro, G Costado, M Damiani, F Edvardsson, B Hourihane, A Jackson, R Lewis, J Lind, K Marconi, G Martayan, C Monaco, L Morbidelli, L Prisinzano, L Zaggia, S Astronomy & Astrophysics volume 570 a122 (03 Oct 2014)
Radial transport of toroidal angular momentum in tokamaks
 Calvo, I Parra, F Plasma Physics and Controlled Fusion volume 57 issue 7 075006 (01 Jul 2015)
Fri, 12 Dec 2014

14:15 - 15:15
C2

On the Ramdas layer

Vasudeva Murthy
(Tata Institute of Fundamental Research (TIFR) Bangalore)
Abstract

On calm clear nights a minimum in air temperature can occur just above the ground at heights of order 0.5m or less. This is contrary to the conventional belief that ground is the point of minimum. This feature is paradoxical as an apparent unstable layer (the height below the point of minimum) sustains itself for several hours. This was first reported from India by Ramdas and his coworkers in 1932 and was disbelieved initially and attributed to flawed thermometers. We trace its history, acceptance and present a mathematical model in the form of a PDE that simulates this phenomenon.

The History of Mathematics in 300 Stamps - Public Lecture online

Robin Wilson's entire history of mathematics in one hour, as illustrated by around 300 postage stamps featuring mathematics and mathematicians from across the world.

From Euclid to Euler, from Pythagoras to Poincaré, and from Fibonacci to the Fields Medals, all are featured in attractive, charming and sometimes bizarre stamps.

 

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