[▽]
[△]時の砂時計型
∫Σ 2･5√38[(6･2√144) / (18･8√1892)] *
F :Δ(f)[n0(0,0,0,0), n1( 1,2,2,1),n2(-2,0,1,-2),
n3(1,-2,2,1),n4(-2,0,1,-2)] *∫[(i-1)(i+3)]/[(i-2)^2]
F[▷◁] :Δ(f)[n0(0,0,0,0),n1( 2,1,1,2),n2(0,-2,-2,1),
n3(-2,1,1,2),n4(0,-2,-2,1)]*[(i-1)(i+3)][(i+2)^2]
Σ∫[4;(Z,N,rN,rZ)])
[(i-4)(i+2)/(i-1)(i+3)]
[(i+8)(i-3)/(i-6)(i+7)]
