The closed formula for the refined tree index
Let γi\gamma_iγi be charge vectors, let Ftr,n({γi},z)F_{{\rm tr},n}(\{\gamma_i\},z)Ftr,n({γi},z) be the partial tree index, let κ\kappaκ be the two-centered index factor, and define … Let Sym{\rm Sym}Sym denote…