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arXiv:1906.06373 [math.CO]AbstractReferencesReviewsResources

On the halves of a Riordan array and their antecedents

Paul Barry

Published 2019-06-14Version 1

Every Riordan array has what we call a horizontal half and a vertical half. These halves of a Riordan array have been studied separately before. Here, we place them in a common context, showing that one may be obtained from the other. We also ask and answer the question: given a Riordan array, when is it the half (either horizontal of vertical) of a Riordan array?

Comments: 14 pages
Categories: math.CO
Subjects: 15B36, 11B83, 11C20
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