=∑5,-a(∑表示不含=D s2w空5 m(afsr含15 ≤Mn(n-)∑'ls5f =M2n(n-)∑'l515,f 4' , 1 n i j ij ji i j ξ ξ a a = = ∑ − ( ' ∑ 表示不含 i=j) ' , 1 2 n i j i j M ξ ξ = ≤ ∑ ( ) 2 2 2 ' , 1 Im n i j i j λ M ξ ξ = ≤ ∑ ( ) 2 2 ' , 1 1 n i j i j Mnn ξ ξ = ≤ − ∑ ( ) 2 2 2 ' , 1 1 n i j i j Mnn ξ ξ = = − ∑ 4