Regular languages of plus - and minus - ( in ) decomposable permutations
نویسندگان
چکیده
In this paper we show that the sets of plusrespectively minus-decomposable permutations of a regular class under the rank encoding form regular sublanguages. Plusrespectively minus-decomposable permutations are permutations allowing for a special kind of block-decomposition. The language theoretic results shown have di erent approaches, even though the properties of plusand minus-decomposability of permutations are similar. Mathematics Subject Classi cation(2010). 05A05, 68Q45.
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تاریخ انتشار 2014