摘要
Let A(1) (...) ,A(h) be finite non-empty subsets of a field K and let s(k)(x(1) ... ,x(h)) be the elementary symmetric polynomial of degree k in h indeterminates. Here we present some estimates for the cardinality of the sets of the images of all h-tuples of A(1) x ... x A(h) by the polynomial s(k), with and without the restriction that the elements of the h-tuples are pairwise distincts.
- 出版日期2010-7