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We study the palindrome complexity of infinite sequences on finite alphabets, i.e., the number of palindromic factors (blocks) of given length occurring in a given sequence. We survey the known results and obtain new results for some sequences, in particular for Rote sequences and for fixed points of primitive morphisms of constant length belonging to the class P substitutions of Hof-Knill-Simon. We also give an upper bound for the palindrome complexity of a sequence in terms of its (block-)complexity.
24 pages, dedicated to Jean Berstel for his 60th birthday
Combinatorics on words, infinite sequences on finite alphabets, FOS: Mathematics, Mathematics - Combinatorics, Combinatorics (math.CO), 004, 510, Theoretical Computer Science, Computer Science(all)
Combinatorics on words, infinite sequences on finite alphabets, FOS: Mathematics, Mathematics - Combinatorics, Combinatorics (math.CO), 004, 510, Theoretical Computer Science, Computer Science(all)
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 80 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 1% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |