译文：Exclude d≥0 d\ge0d≥0
译文：Rearrange as n/m=sd n/m=s^d n/m=sd. 若 d=0 d=0d=0 译文：, then m=n m=n m=n 且equati上gives m=2m m=2m m=2m, impossible. 若 d>0 d>0d>0 译文：, then n>m n>m n>m 译文：, so d=2n−m>n d=2n-m>n d=2n−m>n 译文：; but n=msd≥sd>d n=ms^d\ge s^d>d n=msd≥sd>d 译文：, impossible.