nom :
FF6
abreviation :
FF6
type :
non-symétrique
categorie :
set
liste_dimension :
1, 6, 56, 640, 8158, 111258, 1588544, 23446248
serie :
(x*(1-3*x-x**2+x**3)/(1+3*x+x**2-x**3)).reverse()
oeis :
proprietes :
binaire, quadratique
generateurs :
{'<': ['2'], 'o': ['2'], '>': ['2'], '.': ['2'], '≪': ['2'], '≫': ['2']}
relations :
(x>y)<z = x>(y<z)
(xoy)oz = xo(yoz)
(x>y)oz = x>(yoz)
(x<y)oz = xo(y>z)
(xoy)<z = xo(y<z)
(x.y).z = x.(y.z)
(x<y)<z = x<(y.z)
(x.y)>z = x>(y>z)
(x≪y)oz = xo(y≫z)
(x≪y)≪z = x≪(y.z)
(x.y)≫z = x≫(y≫z)
(xoy)≪z = xo(y≪z)
(x≫y)oz = x≫(yoz)
(x>y)≪z = x>(y≪z)
(x≫y)<z = x≫(y<z)
(x≫y)≪z = x≫(y≪z)
references :
F. Chapoton, F. Hivert et J.-C. Novelli, 2013 : Lien Arxiv 1307.0092