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本文通过定义S-多项式,给出了系数环是整环的多项式中理想的准-Groebner基的一个算法,并据此给出了计算该理想极大无关变元组和维数的一种方法。 相似文献
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For a simple undirected graph G, denote by A(G) the (0,1)-adjacency matrix of G. Let thematrix S(G) = J-I-2A(G) be its Seidel matrix, and let S G (??) = det(??I-S(G)) be its Seidel characteristic polynomial, where I is an identity matrix and J is a square matrix all of whose entries are equal to 1. If all eigenvalues of S G (??) are integral, then the graph G is called S-integral. In this paper, our main goal is to investigate the eigenvalues of S G (??) for the complete multipartite graphs G = $G = K_{n_1 ,n_2 ,...n_t } $ . A necessary and sufficient condition for the complete tripartite graphs K m,n,t and the complete multipartite graphs to be S-integral is given, respectively. 相似文献
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