拟阵的并与横贯拟阵
Science Technology and Engineering(2011)
Abstract
研究拟阵的并与横贯拟阵.首先导出定义在不同集上拟阵的并的秩函数,然后结合多项拟阵函数所确定拟阵与横贯拟阵的秩函数,给出了拟阵的并与横贯拟阵的多种关系与性质.
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Key words
matroid unions transversal matroid polymatroid function rank maximum common independent set problem
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