SPEAKER: Philippe Gille (CNRS, Lyon I)             ABSTRACT: This is a report on joint work with Seidon Alsaody (Lyon). Let C be an octonion algebra defined over a ring R. Informally speaking, an isotope C' of C is a kind of deformation of C defined by Albert and which has been investigated by McCrimmon and Knus/Parimala/Sridharan. The aim of this talk is to describe and to classify the isotopes of C by means of triality and cohomological methods.

 

Date: April 28, 2017

Time: 12:00-13:00

Place: 585 KED, B015

 

Speaker: Charlie Douanla Lontsi, INRIA

 

  The mathematical models used in cardiac electrophysiology are parabolic PDE,

  coupled with systems of ODEs called ionic models. These models

  belong to the class of stiff reaction diffusion equations, where the PDE and ODE are both

  responsible of the stiffness. The PDE displays a diffusion term that is solved

  implicitely while the reaction term coupled with the ODE system is strongly non