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About: Peirce quincuncial projection     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Thinking105770926, within Data Space : dbpedia.org associated with source document(s)

Type: Thinganatomical structureyago:WikicatCartographicProjectionsyago:Abstraction100002137yago:Cognition100023271yago:HigherCognitiveProcess105770664yago:Prediction105775081yago:Process105701363yago:Projection105775293yago:PsychologicalFeature100023100yago:Reasoning105772356yago:Thinking105770926 New Facet based on Instances of this Class

The Peirce quincuncial projection is the conformal map projection from the sphere to an unfolded square dihedron, developed by Charles Sanders Peirce in 1879. Each octant projects onto an isosceles right triangle, and these are arranged into a square. The name quincuncial refers to this arrangement: the north pole at the center and quarters of the south pole in the corners form a quincunx pattern like the pips on the five face of a traditional die. The projection has the distinctive property that it forms a seamless square tiling of the plane, conformal except at four singular points along the equator.