Abstract | ||
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We prove that for m ⩾1, card( A m ) = 1+∑ m i =1 ( m − i +1) ϕ ( i ) where A m is the set of factors of length m of all the Sturmian words and ϕ is the Euler function. This result was conjectured by Dulucq and Gouyou-Beauchamps (1987) who proved that this result implies that the language (∪ m ⩾0 A m ) c is inherently ambiguous. We also give a combinatorial version of the Riemann hypothesis. |
Year | DOI | Venue |
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1991 | 10.1016/0304-3975(91)90172-X | Theor. Comput. Sci. |
Keywords | DocType | Volume |
Sturmian word | Journal | 82 |
Issue | ISSN | Citations |
1 | Theoretical Computer Science | 56 |
PageRank | References | Authors |
13.09 | 2 | 1 |
Name | Order | Citations | PageRank |
---|---|---|---|
Filippo Mignosi | 1 | 569 | 99.71 |