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Talks

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Talks 2014

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32 entries found

Page 4 of 4 1234 <<

  • January
  • 16. January
    17:00 - 18:30
    Location: 48-436
    AG Algebra, Geometrie und Computeralgebra

    Serge Bouc (Amiens): The poset of posets

    In this joint work with Jacques Thévenaz, we study the structure of the algebra E(X) of essential relations on a finite set X: this algebra (which doesn't seem to have been considered so far) is the quotient of the algebra of the monoid of all relations on X by the submodule generated by relations which factor through a (strictly) smaller set. In particular, we determine all the simple E(X)-modules. These are parametrized in particular by order relations on X. This motivates further study of combinatorial and topological properties of the "poset of posets" on X.

  • 09. January
    15:30 - 17:00
    Location: 48-582
    AG Algebra, Geometrie und Computeralgebra

    Caroline Lassueur: The position of endo-p-permutation modules and relatives in the Auslander-Reiten quiver

Page 4 of 4 1234 <<