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A Penrose tiling is an example of an aperiodic tiling. Here, a tiling is a covering of the plane by non-overlapping polygons or other shapes, and a tiling is aperiodic if it does not contain arbitrarily large periodic regions or patches. However, despite their lack of translational symmetry, Penrose tilings may have both reflection symmetry and ...
The white tiger has a white background colour with sepia-brown stripes. The golden tiger is pale golden with reddish-brown stripes. The snow-white tiger is a morph with extremely faint stripes and a pale reddish-brown ringed tail. White and golden morphs are the result of an autosomal recessive trait with a white locus and a wideband locus ...
In 1188, Kings Henry II of England and Philip II of France agreed to launch the Third Crusade together, and that Henry would use a white cross and Philip a red cross. The red-on-white cross came to be used by the Knights Templar, and the white-on-red one by the Knights Hospitaller (also white-on-black); the Teutonic Order used a black-on white ...
A Celtic cross symbol. The Celtic cross is a form of Christian cross featuring a nimbus or ring that emerged in Ireland, France and Great Britain in the Early Middle Ages.A type of ringed cross, it became widespread through its use in the stone high crosses erected across the islands, especially in regions evangelised by Irish missionaries, from the ninth through the 12th centuries.
Dual to Ammann A2. Tilings MLD from the tilings by the Shield tiles. Tilings MLD from the tilings by the Socolar tiles. Tiling is MLD to Penrose P1, P2, P3, and Robinson triangles. Tiling is MLD to Penrose P1, P2, P3, and "Starfish, ivy leaf, hex". Date is for publication of matching rules.
Turns out she told her son Prince Louis "You stay there, okay?" and then added to Princess Charlotte, "Keep smiling and stay here for one moment." Charlotte then told a dancing Prince Louis "You ...
Country music artist Kane Brown and his wife, singer Katelyn Jae, welcomed their third child together — a boy! — on June 18. The couple shared a few precious images on Instagram with newborn ...
Saltire. A diagonal cross (decussate cross, saltire, St. Andrew's Cross) A saltire, also called Saint Andrew's Cross or the crux decussata, [1] is a heraldic symbol in the form of a diagonal cross. The word comes from the Middle French sautoir, Medieval Latin saltatoria ("stirrup"). [2]