involution on a line
61List of mathematics articles (A) — NOTOC A A Beautiful Mind A Beautiful Mind (book) A Beautiful Mind (film) A Brief History of Time (film) A Course of Pure Mathematics A curious identity involving binomial coefficients A derivation of the discrete Fourier transform A equivalence A …
62Inversion in a point — In Euclidean geometry, the inversion of a point X in respect to a point P is a point X * such that P is the midpoint of the line segment with endpoints X and X *. In other words, the vector from X to P is the same as the vector from P to X *.The… …
63skin — skinlike, adj. /skin/, n., v., skinned, skinning, adj. n. 1. the external covering or integument of an animal body, esp. when soft and flexible. 2. such an integument stripped from the body of an animal, esp. a small animal; pelt: a beaver skin.… …
64animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by …
65Dynkin diagram — See also: Coxeter–Dynkin diagram Finite Dynkin diagrams Affine (extended) Dynkin diagrams …
66ROT13 — replaces each letter by its partner 13 characters further along the alphabet. For example, HELLO becomes URYYB (or, rev …
67Quaternion — Quaternions, in mathematics, are a non commutative extension of complex numbers. They were first described by the Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three dimensional space. They find uses in both… …
68Thymus — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 274 GrayPage = 1273 Caption = Thymus Caption2 = The thymus of a full term fetus, exposed in situ. Precursor = third branchial pouch System = Artery = derived from internal mammary artery,… …
69Exclusive or — The logical operation exclusive disjunction, also called exclusive or (symbolized XOR or EOR), is a type of logical disjunction on two operands that results in a value of “true” if and only if exactly one of the operands has a value of “true”. [… …
70Kleene algebra — In mathematics, a Kleene algebra (named after Stephen Cole Kleene, IPAEng|ˈkleɪni as in clay knee ) is either of two different things:* A bounded distributive lattice with an involution satisfying De Morgan s laws, and the inequality x ∧− x ≤ y… …
