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Paper detail

Counting independent sets in Riordan graphs

The notion of a Riordan graph was introduced recently, and it is a far-reaching generalization of the well-known Pascal graphs and Toeplitz graphs. However, apart from a certain subclass of Toeplitz graphs, nothing was known on independent sets in Riordan graphs. In this paper, we give exact enumeration and lower and upper bounds for the number of independent sets for various classes of Riordan graphs. Remarkably, we offer a variety of methods to solve the problems that range from the structural decomposition theorem to methods in combinatorics on words. Some of our results are valid for any graph.

preprint2020arXivOpen access
Gi-Sang CheonJi-Hwan JungBumtle KangHana KimSuh-Ryung KimSergey KitaevSeyed Ahmad Mojallal
math.CO
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Gi-Sang CheonJi-Hwan JungBumtle KangHana KimSuh-Ryung KimSergey KitaevSeyed Ahmad Mojallal

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