aperiodic system
11Wang tile — Wang tiles (or Wang dominoes), first proposed by mathematician Hao Wang in 1961, are a class of formal systems. They are modelled visually by equal sized squares with a color on each edge which can be arranged side by side (on a regular square… …
12Quasicrystal — Atomic model of an aluminum palladium manganese (Al Pd Mn) quasicrystal surface. Similar to Fig. 6 in Ref.[1] A quasiperiodic crystal, or, in short, quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can… …
13List of mathematics articles (A) — NOTOC A A Beautiful Mind A Beautiful Mind (book) A Beautiful Mind (film) A Brief History of Time (film) A Course of Pure Mathematics A curious identity involving binomial coefficients A derivation of the discrete Fourier transform A equivalence A …
14Loudspeaker enclosure — A loudspeaker enclosure is a cabinet designed to transmit sound to the listener via mounted loudspeaker drive units. The major role of the enclosure is to prevent the out of phase sound waves from the rear of the speaker from combining with the… …
15Krohn–Rhodes theory — In mathematics and computer science, Krohn Rhodes theory is an approach to the study of finite semigroups and automata that seeks to decompose them in terms of elementary components. These turn out to correspond to finite aperiodic semigroups and …
16mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… …
17Domino problem — An aperiodic set of Wang dominoes.[1] In geometry, the domino problem is the problem of deciding whether a set of tiles of a particular kind admits a tiling. In a 1961 paper[2] …
18What Is Life? — Infobox Book name = What is Life? Mind and Matter title orig = image caption = author = Erwin Schrödinger illustrator = cover artist = country = language = English series = subject = genre = Popular science publisher = Cambridge University Press… …
19Outer billiard — Outer Billiards is a dynamical system based on a convex shape in the plane. Classically, this system is defined for the Euclidean plane but one can also consider the system in the hyperbolic plane or in other spaces that suitably generalize the… …
20Articulatory phonetics — Manners of articulation Obstruent Plosive (occlusive) Affricate Fricative Sibilant Sonorant Nasal Flap/Tap Approximant …
