PARIKH $\texttt{q}-$ MATRIX UNDER PROUHET MORPHISM

Print ISSN: 0972-7752 | Online ISSN: 2582-0850

Abstract

The Parikh $\texttt{q}-$matrix is the extension of Parikh matrix that maps words to matrices with polynomial entries. Since Parikh $\texttt{q}-$matrix mapping is not an injective mapping, we consider Prouhet morphism on words to distinguish $\texttt{q}-$equivalent binary words by their Parikh $\texttt{q}-$matrix. We state the formulae to calculate $\texttt{q}-$counting of scattered subwords of the image of any word under Prouhet morphism. With the aid of Parikh $\texttt{q}-$matrices, we establish various properties of image of words under this morphism.

Keywords and Phrases

Subwords, Parikh matrix, Parikh $\texttt{q}-$matrix, Prouhet morphism.

A.M.S. subject classification

68R15, 68Q45.

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