subgroups
81Hall–Janko graph — [ HJ as Foster graph (90 outer vertices) plus Steiner system S(3,4,10) (10 inner vertices).] In graph theory, the Hall–Janko graph, also known as the Hall Janko Wales graph, is a rank 3 strongly regular graph with parameters (100,36,14,12) and a… …
82Euclidean plane isometry — In geometry, a Euclidean plane isometry is an isometry of the Euclidean plane, or more informally, a way of transforming the plane that preserves geometrical properties such as length. There are four types: translations, rotations, reflections,… …
83Satuan Karya — Pramuka (Saka) or special Scout troops are the education tools to sharpen the Scouts skills in certain fields, to build knowledge in the Information Technology (IT) field, and to answer the challenges from youth to provide advantageous activities …
84Canadian system of soil classification — The Canadian system of soil classification is more closely related to the American system than any other. They differ in several ways. The Canadian system is designed to cover only Canadian soils. The Canadian system dispenses with a sub order… …
85Deligne–Lusztig theory — In mathematics, Deligne–Lusztig theory is a way of constructing linear representations of finite groups of Lie type using ℓ adic cohomology with compact support, introduced by Deligne Lusztig (1976). Lusztig (1984) used these representations to… …
86Z-group — In mathematics, especially in the area of algebra known as group theory, the term Z group refers to a number of distinct types of groups: * in the study of finite groups, a Z group is a finite groups whose Sylow subgroups are all cyclic. * in the …
87Stallings theorem about ends of groups — In the mathematical subject of group theory, the Stallings theorem about ends of groups states that a finitely generated group G has more than one end if and only if the group G admits a nontrivial decomposition as an amalgamated free product or… …
88SICKNESS — HEALTH STATUS Introduction There are several available yardsticks for measuring intergroup differences in health status: (1) lifetime longevity, i.e., average expectation of life in years (calculated at birth or other selected points in the age… …
89Natural selection — For other uses, see Natural Selection (disambiguation). Part of a series on Evolutionary Biology …
90Symmetry group — Not to be confused with Symmetric group. This article is about the abstract algebraic structures. For other meanings, see Symmetry group (disambiguation). A tetrahedron can be placed in 12 distinct positions by rotation alone. These are… …
