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COMBINATORICS
2007
14 years 9 months ago
2007
We compute the spectrum of the Schreier graph of the symmetric group Sn corresponding to the Young subgroup S2 × Sn−2 and the generating set consisting of initial reversals. In ...
EJC
2010
14 years 9 months ago
2010
We invesitage the multiplicative loops of finite semifields. We show that the group generated by the left and right multiplication maps contains the special linear group. This resu...
AML
2004
14 years 9 months ago
2004
We characterise imaginaries (up to interdefinability) in Hilbert spaces using a Galois theory for compact unitary groups.
EUSFLAT
2007
14 years 11 months ago
2007
We define two negotiation protocols for Group Decision Making, which main feature is the existence of acceptation thresholds. In order to predict which consensus are expected to ...
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ECSCW
2001
14 years 10 months ago
2001
We present PolyLens, a new collaborative filtering recommender system designed to recommend items for groups of users, rather than for individuals. A group recommender is more appr...