Generalised Lyndon-Schützenberger Equations

Generalised Lyndon-Schützenberger Equations
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广义 Lyndon-Schützenberger 方程

DOI:
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发表时间:
2014
期刊:
International Symposium on Mathematical Foundations of Computer Science
影响因子:
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通讯作者:
Shinnosuke Seki
Shinnosuke Seki
中科院分区:
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文献类型:
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作者:
F. Manea;M. Müller;Dirk Nowotka;Shinnosuke Seki

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我们充分表征了广义的lyndon-schutzenberger单词方程u 1 u l = v 1 v 1 v m w 1 w n,其中uI∈{u,θ(u)}对于所有1≤i≤l,vj∈{vj∈{vj∈{vj∈{对于所有1≤j≤m,Wk∈{w,θ(w)}的θ(v)}对于所有1≤k≤n,并且θ是更精确的抗差异。 n这样的方程仅具有θ-周期性溶液,即u,v,w∈{t,θ(t)}*对于某个单词t,Czeizler等人(2009年)结束了一个开放的问题。
We fully characterise the solutions of the generalised Lyndon-Schutzenberger word equations u 1 ⋯ u l = v 1 ⋯ v m w 1 ⋯ w n , where u i ∈ {u, θ(u)} for all 1 ≤ i ≤ l, v j ∈ {v, θ(v)} for all 1 ≤ j ≤ m, w k ∈ {w, θ(w)} for all 1 ≤ k ≤ n, and θ is an antimorphic involution. More precisely, we show for which l, m, and n such an equation has only θ-periodic solutions, i.e., u,v,w ∈ {t,θ(t)}* for some word t, closing an open problem by Czeizler et al. (2009).