On cancellation properties of languages which are supports of rational power series
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摘要
Two properties of languages which are supports of rational power series are proved: (i) if two supports are complementary, then they are regular languages; (ii) the Ehrenfeucht conjecture is true for these languages.
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论文评审过程：Received 24 February 1983, Revised 2 November 1983, Available online 2 December 2003.
论文官网地址：https://doi.org/10.1016/0022-0000(84)90026-6
