) 中图学技术大荸学系 University of Science and Technology of China DEPARTMENT OF MATHEMATICS 对应于Φ=P"(x)=Spm{,x,x2,…x"} 0 x.≠0 0≤j<i Vandermonde行列式数 学 系 University of Science and Technology of China DEPARTMENT OF MATHEMATICS ( ) {1, , , } n 2 n 对应于  =  x = span x x x 则 0 1 1 0 0 =  −   jin i j n n n x x x x      Vandermonde行列式