Substitution-closed pattern classes
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The substitution closure of a pattern class is the class of all permutations obtained by repeated substitution. The principal pattern classes (those defined by a single restriction) whose substitution closure can be defined by a finite number of restrictions are classied by listing them as a set of explicit families.
Atkinson , M D , Ruskuc , N & Smith , R 2011 , ' Substitution-closed pattern classes ' Journal of Combinatorial Theory, Series A , vol 118 , no. 2 , pp. 317-340 . , 10.1016/j.jcta.2010.10.006
Journal of Combinatorial Theory, Series A
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