An alphabetic point in an inversion sequence is a value j where all the values l to its left satisfy l ≤ j and all the values r to its right satisfy r ≥ j. We study alphabetic points and records in inversion sequences of permutations and obtain formulae for the total numbers of alphabetic points, weak records, and strict records.
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- alphabetic points
- inversion sequences
ASJC Scopus subject areas
- Discrete Mathematics and Combinatorics