invariant
101Oxford University Invariant Society — Abbreviation The Invariants Type Student Organisation Purpose/focus Education …
102Loop invariant — In computer science, a loop invariant is an invariant used to prove properties of loops.Specifically in Floyd Hoare logic, the partial correctness of a while loop is governed by the following rule of inference::frac{{Cland I};mathrm{body};{I… …
103Time-invariant system — A time invariant system is one whose output does not depend explicitly on time.:If the input signal x produces an output y then any time shifted input, t mapsto x(t + delta), results in a time shifted output t mapsto y(t + delta).Formal: If S is… …
104J-invariant — nome q on the unit diskIn mathematics, Klein s j invariant, regarded as a function of a complex variable tau;, is a modular function defined on the upper half plane of complex numbers. We can express it in terms of Jacobi s theta functions, in… …
105Casimir invariant — In mathematics, a Casimir invariant or Casimir operator is a distinguished element of the centre of the universal enveloping algebra of a Lie algebra. A prototypical example is the squared angular momentum operator, which is a Casimir invariant… …
106Arf invariant — In mathematics, the Arf invariant, named after Turkish mathematician Cahit Arf, who introduced it in 1941, is an element of F2 associated to a non singular quadratic form over the field F2 with 2 elements, equal to the most common value of the… …
107Kontsevich invariant — In the mathematical theory of knots, the Kontsevich invariant, also known as the Kontsevich integral of an oriented framed link is the universal finite type invariant in the sense that any coefficient of the Kontsevich invariant is a finite type… …
108Controlled invariant subspace — In control theory, a controlled invariant subspace of the state space representation of some system is a subspace such that, if the state of the system is initially in the subspace, it is possible to control the system so that the state is in the …
109Knot invariant — In the mathematical field of knot theory, a knot invariant is a quantity (in a broad sense) defined for each knot which is the same for equivalent knots. The equivalence is often given by ambient isotopy but can be given by homeomorphism. Some… …
110De Rham invariant — In geometric topology, the de Rham invariant is a mod 2 invariant of a (4k+1) dimensional manifold, that is, an element of – either 0 or 1. It can be thought of as the simply connected symmetric L group L4k + 1, and thus analogous to the other… …
