EntityQ474147· pop 13· linked from 190 articlesWang tileSign in to saveclass of formal systems modelled visually by equal-sized squares with a color on each edge which can be arranged side by sideConnectionslist of regular polytopesEntitysnub hexagonal tilingEntitydeoxyribonucleic acidEntityInternational Standard Book NumberEntitydigital object identifierEntitydominoesEntityTuring machineEntityQ180686EntityNatureEntityprismEntityJSTOREntitybibcodeEntityQ118398EntityScientific AmericanEntitytessellationEntityQ22908627EntityquasicrystalEntitycellular automatonEntityhalting problemEntityformal systemEntityCategories1961 introductionsAperiodic tilingsEuclidean tilingsTheory of computationUndecidable problems