Tower-type bounds for unavoidable patterns in words
A word w is said to contain the pattern P if there is a way to substitute a nonempty word for each letter in P so that the resulting word is a subword of w. Bean, Ehrenfeucht and McNulty and, independently, Zimin characterised the patterns P which are unavoidable, in the sense that any sufficiently...
| Main Authors: | , , |
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| Formato: | Journal article |
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American Mathematical Society
2019
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