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首页> 外文期刊>Journal of Physics, A. Mathematical and General: A Europhysics Journal >Substitution rules for aperiodic sequences of the cut and project type
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Substitution rules for aperiodic sequences of the cut and project type

机译:剪辑和项目类型的非周期性序列的替换规则

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We consider one-dimensional aperiodic sequences arising from a cut-and-project scheme with quadratic unitary Pisot numbers beta. A construction of the substitution rule is described under rather general assumptions. It allows one to build a given cut-and-project sequence Sigma (beta)(Omega) starting from its arbitrary point. For a sequence with a convex acceptance window interval Omega, we prove that a substitution rule exists precisely if the boundary points of Omega are in the corresponding quadratic field Q[beta]. Typically such a substitution has a reducible characteristic polynomial. Our main result is an algorithm for construction of such a substitution rule. Some examples are shown. [References: 15]
机译:我们考虑一维非周期性序列,该序列是由带二次unit Pisot数beta的切割计划方案产生的。替代规则的构造是在相当笼统的假设下描述的。它允许人们从任意点开始构建给定的剪切序列Sigmaβ(Ω)。对于具有凸接受窗口间隔Omega的序列,我们证明如果Omega的边界点在相应的二次场Qβ中,则精确存在替换规则。通常,这种替换具有可简化的特征多项式。我们的主要结果是构建这种替换规则的算法。显示了一些示例。 [参考:15]

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