 invariant section

I had to include the GNU Manfesto as it was included in an invariant section.
b) A section that will not vary through changing state.
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Invariant differential operators — appear often in mathematics and theoretical physics. There is no universal definition for them and the meaning of invariance may depend on the context. Usually, an invariant differential operator D is a map from some mathematical objects… … Wikipedia
Invariant subspace problem — In the field of mathematics known as functional analysis, one of the most prominent open problems is the invariant subspace problem, sometimes optimistically known as the invariant subspace conjecture. It is the question whether the following… … Wikipedia
Scaleinvariant feature transform — Feature detection Output of a typical corner detection algorithm … Wikipedia
Hopf invariant — In mathematics, in particular in algebraic topology, the Hopf invariant is a homotopy invariant of certain maps between spheres. toc Motivation In 1931 Heinz Hopf used Clifford parallels to construct the Hopf map etacolon S^3 o S^2, and proved… … Wikipedia
Conic section — Types of conic sections: 1. Parabola 2. Circle and ellipse 3. Hyperbola … Wikipedia
Loop 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… … Wikipedia
Seiberg–Witten invariant — In mathematics, Seiberg–Witten invariants are invariants of compact smooth 4 manifolds introduced by harvtxtWitten1994, using the Seiberg Witten theory studied by harvstxt=yeslast=Seiberglast2=Wittenyear1=1994ayear2=1994b during their… … Wikipedia
Modular invariant of a group — In mathematics, a modular invariant of a group is an invariant of a finite group acting on a vector space of positive characteristic (usually dividing the order of the group). The study of modular invariants was originated in about 1914 by… … Wikipedia
Delta invariant — In mathematics, in the theory of algebraic curves, a delta invariant measures the number of double points concentrated at a point.[1] It is a non negative integer. Delta invariants are discussed in the Classification of singularities section of… … Wikipedia
conic section — Geom. a curve formed by the intersection of a plane with a right circular cone; an ellipse, a circle, a parabola, or a hyperbola. Also called conic. [1655 65] * * * Any two dimensional curve traced by the intersection of a right circular cone… … Universalium