Results 211 to 220 of about 9,128,034 (234)

Faithful Loops for Aperiodic E-Ordered Monoids

2009
One of the main objectives of the algebraic theory of regular languages concerns the classification of regular languages based on Eilenberg's variety theorem [10]. This theorem states that there exists a bijection between varieties of regular languages and varieties of finite monoids. For example, the variety of star-free regular languages (the closure
Martin Beaudry, François Lemieux
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Phonons in aperiodically ordered layer systems

Surface Science, 2008
Abstract We have studied the phonons in multilayer structures following different aperiodic sequences (Fibonacci, Thue–Morse, Period-Doubling) along the growth direction. We have employed a nearest-neighbor force constant model giving a reasonably realistic description of metal systems.
A. Montalbán, V.R. Velasco, F.J. Fernández-Velicia, J. Tutor   +3 more
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First-order logic and aperiodic languages

ACM SIGLOG News, 2018
A fundamental result about formal languages states: Theorem 1 A regular language is first-order definable if and only if its syntactic monoid contains no nontrivial groups. Rest assured, we will explain in the next section exactly what the various terms in the statement mean!
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The role of aperiodic order in science and technology

Reports on Progress in Physics, 2005
In this work we consider the role of aperiodic order in different domains of science and technology from an interdisciplinary approach. To start with, we introduce some general classification schemes for aperiodic arrangements of matter. Afterwards, we review the main physical properties and possible applications of quasiperiodic crystals.
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Kolakoski sequences – an example of aperiodic order

Journal of Non-Crystalline Solids, 2004
Abstract (Generalized) Kolakoski sequences are built of two symbols – similar to the Fibonacci-chain – and can be constructed by a very simple rule. They are general enough to allow a richness of structures: e.g., some show pure point diffraction spectrum, others diffuse scattering.
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Quasi-synchronization of fractional-order heterogeneous dynamical networks via aperiodic intermittent pinning control

Chaos, Solitons and Fractals, 2021
Cai Shuiming
exaly  

Aperiodic Order for Nanophotonics

2013
Nate Lawrence, Jacob Trevino, Gary Walsh
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The Mathematics of Long-Range Aperiodic Order

1997
Preface. Knotted Tilings C.C. Adams. Solution of the Coincidence Problem in Dimensions d smaller than or equal to 4 M. Baake. Self-Similar Tilings and Patterns Described by Mappings C. Bandt. Delone Graphs and Certain Species of Such L. Danzer, N. Dolbilin. What is the Long Range Order in the Kolakoski Sequence? F.M. Dekking.
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Aperiodic Order and Geometry

2022
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Nonlocal topological insulators: Deterministic aperiodic arrays supporting localized topological states protected by nonlocal symmetries

Proceedings of the National Academy of Sciences of the United States of America, 2021
Matthew Weiner, Xiang Ni
exaly