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A Nassi–Shneiderman diagram (NSD) in computer programming is a graphical design representation for structured programming. [1] This type of diagram was developed in 1972 by Isaac Nassi and Ben Shneiderman who were both graduate students at Stony Brook University. [2] These diagrams are also called structograms, [3] as they show a program's ...
[1] [2] They're also called Shubnikov–Laves tilings after Aleksei Shubnikov. [3] John Conway called the uniform duals Catalan tilings , in parallel to the Catalan solid polyhedra. The Laves tilings have vertices at the centers of the regular polygons, and edges connecting centers of regular polygons that share an edge.
This semiregular tiling is a member of a sequence of snubbed polyhedra and tilings with vertex figure (3.3.3.3.n) and Coxeter–Dynkin diagram.These figures and their duals have (n32) rotational symmetry, being in the Euclidean plane for n=6, and hyperbolic plane for any higher n.
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The symmetry group of the tiling is the (2,3,7) triangle group, and a fundamental domain for this action is the (2,3,7) Schwarz triangle.This is the smallest hyperbolic Schwarz triangle, and thus, by the proof of Hurwitz's automorphisms theorem, the tiling is the universal tiling that covers all Hurwitz surfaces (the Riemann surfaces with maximal symmetry group), giving them a triangulation ...
November 26, 2024 at 2:06 PM Twenty-two people were arrested in Pennsylvania in connection to a human trafficking operation tied to two massage businesses, officials said.
Stevie Mitchell scored 17 points and No. 15 Marquette capitalized on an early 21-0 run to defeat a pesky Central Michigan team 70-62 on Monday night. Kam Jones and Chase Ross each added 12 points ...
The honeycomb has {3,∞} vertex figures.. In geometry, the infinite-order triangular tiling is a regular tiling of the hyperbolic plane with a Schläfli symbol of {3,∞}. All vertices are ideal, located at "infinity" and seen on the boundary of the Poincaré hyperbolic disk projection.