Levi's lemma
In theoretical computer science and mathematics, especially in the area of combinatorics on words, the Levi lemma states that, for all strings u, v, x and y, if uv = xy, then there exists a string w such that either uw = x and v = wy (if |u| ≤ |x|) or u = xw and wv = y (if |u| ≥ |x|) That is, there is a string w that is "in the middle", and can be grouped to one side or the other. Levi's lemma is named after Friedrich Wilhelm Levi, who published it in 1944.
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Levi's lemma
In theoretical computer science and mathematics, especially in the area of combinatorics on words, the Levi lemma states that, for all strings u, v, x and y, if uv = xy, then there exists a string w such that either uw = x and v = wy (if |u| ≤ |x|) or u = xw and wv = y (if |u| ≥ |x|) That is, there is a string w that is "in the middle", and can be grouped to one side or the other. Levi's lemma is named after Friedrich Wilhelm Levi, who published it in 1944.
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In theoretical computer scienc ...... evi, who published it in 1944.
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Le lemme de Levi est un résultat d'informatique théorique et de combinatoire des mots.
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In theoretical computer scienc ...... evi, who published it in 1944.
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Le lemme de Levi est un résultat d'informatique théorique et de combinatoire des mots.
@fr
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Lemme de Levi
@fr
Levi's lemma
@en