Parallelepiped
121Cyclic symmetries — This article deals with the four infinite series of point groups in three dimensions (n≥1) with n fold rotational symmetry about one axis (rotation by an angle of 360°/n does not change the object), and no other rotational symmetry (n=1 covers… …
122Wedge (geometry) — In geometry, a wedge is a polyhedral solid defined by two triangles and three trapezoid faces. A wedge has five faces, nine edges, and six vertices. A wedge is a subclass of the prismatoids.A wedge can be considered a degenerate digonal cupola… …
123Fixed points of isometry groups in Euclidean space — A fixed point of an isometry group is a point that is a fixed point for every isometry in the group. For any isometry group in Euclidean space the set of fixed points is either empty or an affine space.For an object, any unique center and, more… …
124Giuseppe Penone — (born April 3 1947, Garessio, Italy) is one of the most important Italian artists. Penone started working professionally in 1968 in the Garessio forest near where he was born. He is the younger member of the Italian movement named Arte Povera ,… …
125Murus dacicus — (Latin for Dacian Wall ) is a construction method for defence walls and fortifications developed in ancient Dacia sometime before the Roman conquest. It is a mix between traditional construction methods particular to Dacian builders and methods… …
126Fokker periodicity blocks — are a concept in tuning theory used to mathematically relate musical intervals in just intonation to those in equal tuning. They are named after Adriaan Daniël Fokker.The basic idea of Fokker s periodicity blocks is to represent just ratios as… …
127NTRUSign — NTRUSign, also known as the NTRU Signature Algorithm, is a public key cryptography digital signature algorithm based on the GGH signature scheme. It was first presented at the rump session of Asiacrypt 2001 and published in peer reviewed form at… …
128List of paradoxes — This is a list of paradoxes, grouped thematically. Note that many of the listed paradoxes have a clear resolution see Quine s Classification of Paradoxes.Logical, non mathematical* Paradox of entailment: Inconsistent premises always make an… …
