Algebra Seminar

Isotopes of octonion algebras and triality
Tuesday, 23 May 2017 - 2:30 pm to 3:00 pm
Room number: 
KED B004
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Cost to attend: 
Free of charge
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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.