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TWO-DIMENSIONAL DIGITIZED PICTURE ARRAYS AND PARIKH MATRICES
2013
International Journal of Foundations of Computer Science
Parikh matrix mapping or Parikh matrix of a word has been introduced in the literature to count the scattered subwords in the word. Several properties of a Parikh matrix have been extensively investigated. A picture array is a two-dimensional connected digitized rectangular array consisting of a finite number of pixels with each pixel in a cell having a label from a finite alphabet. Here we extend the notion of Parikh matrix of a word to a picture array and associate with it two kinds of Parikh
doi:10.1142/s012905411350010x
fatcat:jzvtj4hb4bhblceeqocrgadvw4