unit triangular
1Triangular matrix — In the mathematical discipline of linear algebra, a triangular matrix is a special kind of square matrix where the entries either below or above the main diagonal are zero. Because matrix equations with triangular matrices are easier to solve… …
2Triangular division — A triangular division is a designation given to the way divisions are organized. In a triangular organization, the division s main body is composed of three regimental maneuver elements. These regiments may be controlled by a brigade headquarters …
3Unit disk graph — In geometric graph theory, a unit disk graph is the intersection graph of a family of unit circles in the Euclidean plane. That is, we form a vertex for each circle, and connect two vertices by an edge whenever the corresponding circles cross… …
4Triangular function — The triangular function (also known as the triangle function, hat function, or tent function) is defined either as::egin{align}operatorname{tri}(t) = and (t) quad overset{underset{mathrm{def{{=} max(1 |t|, 0) = egin{cases}1 |t|, |t| < 1 ,… …
5Triangular coordinates — The term triangular coordinates may refer to either of at least three related systems of coordinates in the Euclidean plane. See barycentric coordinates and ternary plot for an account of one such system, and trilinear coordinates for another.… …
6Elongated triangular orthobicupola — Infobox Polyhedron Polyhedron Type=Johnson J 34 J35 J36 Face List=2+6 triangles 2.3+6 squares Edge Count=36 Vertex Count=18 Symmetry Group= D 3h| Vertex List=6(3.4.3.4) 12(3.43) Dual= Property List=convexIn geometry, the elongated triangular… …
7Metric (unit) — This article is about the measurement of performance. For metric units, see Metric system and International System of Units. For disambiguous use, see Metric (disambiguation) A metric is a measure for quantitatively assessing, controlling or… …
8LU decomposition — In linear algebra, LU decomposition (also called LU factorization) is a matrix decomposition which writes a matrix as the product of a lower triangular matrix and an upper triangular matrix. The product sometimes includes a permutation matrix as… …
9Kalman filter — Roles of the variables in the Kalman filter. (Larger image here) In statistics, the Kalman filter is a mathematical method named after Rudolf E. Kálmán. Its purpose is to use measurements observed over time, containing noise (random variations)… …
10Greek arithmetic, geometry and harmonics: Thales to Plato — Ian Mueller INTRODUCTION: PROCLUS’ HISTORY OF GEOMETRY In a famous passage in Book VII of the Republic starting at Socrates proposes to inquire about the studies (mathēmata) needed to train the young people who will become leaders of the ideal… …
