【摘 要】
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A binary word f is a factor of word u if f appears as a sequence of |f| consecutive bits of u, where |f| denotes the length of f.Generalized Fibonacci cube Qd(f) is the graph obtained from the d-hyper
【机 构】
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Ludong University
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A binary word f is a factor of word u if f appears as a sequence of |f| consecutive bits of u, where |f| denotes the length of f.Generalized Fibonacci cube Qd(f) is the graph obtained from the d-hypercube Qd by removing all vertices that contain f as a factor.This concept was posed by Ili(c), Kla(z)ar and Rho.If Qd(f) is an isometric subgraph of Qd for all d ≥ 1, then f is called good, otherwise it is bad.The index of a binary string f, denoted by B(f), is the smallest integer d such that Qd(f) is not an isometric subgraph of Qd.Ili(c) et al.
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