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2. Linear inequality - Wikipedia

   en.wikipedia.org/wiki/Linear_inequality

   Two-dimensional linear inequalities are expressions in two variables of the form: + < +, where the inequalities may either be strict or not. The solution set of such an inequality can be graphically represented by a half-plane (all the points on one "side" of a fixed line) in the Euclidean plane. [2]

3. Crossing number inequality - Wikipedia

   en.wikipedia.org/wiki/Crossing_number_inequality

   If there were more incidences than the Szemerédi–Trotter bound, this graph would necessarily have more crossings than the total number of pairs of lines, an impossibility. The inequality can also be used to prove Beck's theorem, that if a finite point set does not have a linear number of collinear points, then it determines a quadratic ...

4. Inequality (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Inequality_(mathematics)

   The feasible regions of linear programming are defined by a set of inequalities. In mathematics, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions. [1] It is used most often to compare two numbers on the number line by their size.

5. Crossing number (graph theory) - Wikipedia

   en.wikipedia.org/wiki/Crossing_number_(graph_theory)

   This is the minimum number of crossings among all drawings of this graph, so the graph has crossing number cr(G) = 3. In graph theory, the crossing number cr(G) of a graph G is the lowest number of edge crossings of a plane drawing of the graph G. For instance, a graph is planar if and only if its crossing number is zero. Determining the ...

6. Number line - Wikipedia

   en.wikipedia.org/wiki/Number_line

   The order of the natural numbers shown on the number line. A number line is a picture of a straight line that serves as spatial representation of numbers, usually graduated like a ruler with a particular origin point representing the number zero and evenly spaced marks in either direction representing integers, imagined to extend infinitely.

7. Jensen's inequality - Wikipedia

   en.wikipedia.org/wiki/Jensen's_inequality

   Jensen's inequality generalizes the statement that a secant line of a convex function lies above its graph. Visualizing convexity and Jensen's inequality. In mathematics, Jensen's inequality, named after the Danish mathematician Johan Jensen, relates the value of a convex function of an integral to the integral of the convex function.

8. GeoGebra - Wikipedia

   en.wikipedia.org/wiki/GeoGebra

   Constructions can be made with points, vectors, segments, lines, polygons, conic sections, inequalities, implicit polynomials and functions, all of which can be edited dynamically later. Elements can be entered and modified using mouse and touch controls, or through an input bar. GeoGebra can store variables for numbers, vectors and points ...

9. List of inequalities - Wikipedia

   en.wikipedia.org/wiki/List_of_inequalities

   1.7 Number theory. 1.8 Probability theory and statistics. 1.9 Topology. ... Correlation inequality – any of several inequalities; FKG inequality; Ginibre inequality;