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DTSTART:20210314T070000
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DTSTART;TZID=America/Toronto:20220307T233000
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URL:/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-seminar-bill-martin
SUMMARY:Algebraic Graph Theory Seminar - Bill Martin
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Polynomial ideals\, association schemes\, a
 nd the Q-polynomial\nproperty\n\nSpeaker:\n Bill Martin\n\nAfiliation:\n W
 orcester Polytechnic Institute\n\nZoom:\n Contact Sabrina Lato\n\nABSTRACT
 :\n\nLet X ⊆ S^{m−1} be a spherical code in C^m. We study the ideal I\
 n⊆ C[z_1\, . . . \, z_m] of polynomials that vanish on the points of X:\
 nI = { F(z) | (∀a ∈ X) (F(a) = 0) }. The primary example of\ninterest 
 is where the Gram matrix of X is proportional to the first\nidempotent in 
 some Q-polynomial ordering of an association scheme (X\,\nR) defined on X.
 \n 
DTSTAMP:20250919T113829Z
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