... then haveiV (φi, ζi)PN j V (ψ j , z j )=0uΣh j −N−1iV (φi, ζi) j V (ψ j , uz j )du∼iV (φi, ζi) j V (ψ j , z j )|u|=ρu−N−1du (74)which, ... Q)am: J am J an−m: , (134)where the colons denote normal ordering: J am J bl:= J am J blif m < 0 J bl J amif m ≥ 0.(135)The construction of the stress-energy-tensor as ... partof the OPE of J with itself has been subtracted. In fact, it follows from (87) that J( w )J( z) =1(w − z)2V (J 1 J −1Ω, z) +1(w − z)V (J 0 J −1Ω, z) (122)+ V (J −1 J −1Ω, z) + O(w...