Browsing 2020 by MFO Scientific Program "OWLF 2020"

Now showing items 1-4 of 4

Homology and $K$ -Theory of Torsion-Free Ample Groupoids and Smale Spaces

[OWP-2020-20] Proietti, Valerio; Yamashita, Makoto (Mathematisches Forschungsinstitut Oberwolfach, 2020-10-09)

Given an ample groupoid, we construct a spectral sequence with groupoid homology with integer coefficients on the second sheet, converging to the $K$ -groups of the groupoid C*-algebra when the groupoid has torsion-free ...
Hopf Algebras in Combinatorics, Volume 1

[OWP-2020-14] Grinberg, Darij; Reiner, Victor (Mathematisches Forschungsinstitut Oberwolfach, 2020-07-29)
Hopf Algebras in Combinatorics, Volume 2

[OWP-2020-15] Grinberg, Darij; Reiner, Victor (Mathematisches Forschungsinstitut Oberwolfach, 2020-07-30)
The Pelletier-Ressayre Hidden Symmetry for Littlewood-Richardson Coefficients

[OWP-2020-18] Grinberg, Darij (Mathematisches Forschungsinstitut Oberwolfach, 2020-09-08)

We prove an identity for Littlewood–Richardson coefficients conjectured by Pelletier and Ressayre. The proof relies on a novel birational involution defined over any semifield.