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SUMMARY:Distributive Lattice of Half-Turn Symmetric Alternating Sign Matri
ces
DTSTART;VALUE=DATE-TIME:20190910T084500Z
DTEND;VALUE=DATE-TIME:20190910T094500Z
DTSTAMP;VALUE=DATE-TIME:20191024T013616Z
UID:indico-event-4953@indico.math.cnrs.fr
DESCRIPTION:Striker and Williams defined promotion and rowmotion for the t
oggle group of an rc-poset.\nThey investigated the distributive lattice of
the alternating sign matrices which is the lattice of order ideals of the
poset $\\bf{A}_n$\, which is obtained by gluing the positive root posets
$\\Phi^+(A_k)$.\nWe consider the set of the half-turn symmetric alternatin
g sign matrices as a distributive lattice by the height function and inves
tigate the underlying poset\, which is obtained by gluing the positive roo
t posets $\\Phi^+(B_k)$.\n\nhttps://indico.math.cnrs.fr/event/4953/
LOCATION:ICJ\, UniversitĂ© Lyon 1 BĂ˘t. Braconnier\, salle Fokko du Cloux
URL:https://indico.math.cnrs.fr/event/4953/
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