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Operad: Novikov

abbreviation
Novikov
category
vec
type
symetrique
dimensions

1, 2, 6, 20, 70, 252, 924

OEIS: A000984

Formula: binomial(2*n-2,n-1)

properties
binary, quadratic, non-Koszul
generateurs
  • generator < of type s[1]**2
relations
  • equality: (x<y)<z-x<(y<z) = (x<z)<y-x<(z<y)
  • equality: x<(y<z) = y<(x<z)
morphisms
→ Perm

References