Levenshtein Graphs: Resolvability, Automorphisms & Determining Sets

DOI10.1016/J.DISC.2022.113310arXiv2107.06951MaRDI QIDQ6372843

Perrin E. Ruth, Manuel E. Lladser

Publication date: 14 July 2021

Abstract: We introduce the notion of Levenshtein graphs, an analog to Hamming graphs but using the edit distance instead of the Hamming distance; in particular, Levenshtein graphs allow for underlying strings (nodes) of different lengths. We characterize various properties of these graphs, including a necessary and sufficient condition for their geodesic distance to be identical to the edit distance, their automorphism group and determining number, and an upper bound on their metric dimension. Regarding the latter, we construct a resolving set composed of two-run strings and an algorithm that computes the edit distance between a string of length $k$ and any single-run or two-run string in $O(k)$ operations.

Mathematics Subject Classification ID

Distance in graphs (05C12) Combinatorial codes (94B25)

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