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l 1 -embeddability of pentagon-based open-ended nanotubes and its applications
AIMS Mathematics 2026, 11(5): 12934-12960
Published: 15 May 2026
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A graph is l 1 -embeddable if it admits a binary addressing such that the Hamming distance between the binary addresses is, up to scale, the distance in the graph between the corresponding vertices. The zigzag pentagon-based nanotubes and armchair pentagon-based nanotubes are two new materials with the tube shapes. In order to easily calculate their chemical indices based on distances, we showed that only five types I ( p , 1 ), I ( 1 , q , θ ) with q 5, I ( 1 , 3 , θ ), I ( 2 , 3 , ζ ) and I ( 2 , 5 , ζ ) zigzag pentagon-based nanotubes were l 1 -embeddable. Finally, we gave the precise value of the Wiener index and the hyper-Wiener index of these five zigzag pentagon-based nanotubes.

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