T PO ( λ) = πq 1 bq 1 ( O1 ) aq q bq ( O t t t t) 1 for all Q t = 2
n n ( Cx, Cy ) = xt, yt 1 1 n = n 1 = 1 t t
θt ϕt = 2 π ρ t rt = r F = {( ρϕ 1, 1),( ρ2, ϕ2 ),,( ρϕ t, t ),( ρn, ϕn )} max