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  2. Transitive relation - Wikipedia

    en.wikipedia.org/wiki/Transitive_relation

    Non-transitive, non-antitransitive relations include sports fixtures (playoff schedules), 'knows' and 'talks to'. The examples "is greater than", "is at least as great as", and "is equal to" are transitive relations on various sets. As are the set of real numbers or the set of natural numbers: whenever x > y and y > z, then also x > z

  3. Inverse function - Wikipedia

    en.wikipedia.org/wiki/Inverse_function

    The graphs of y = f(x) and y = f −1 (x). The dotted line is y = x. If f is invertible, then the graph of the function = is the same as the graph of the equation = (). This is identical to the equation y = f(x) that defines the graph of f, except that the roles of x and y have

  4. Inverse function rule - Wikipedia

    en.wikipedia.org/wiki/Inverse_function_rule

    Assuming that has an inverse in a neighbourhood of and that its derivative at that point is non-zero, its inverse is guaranteed to be differentiable at and have a derivative given by the above formula. The inverse function rule may also be expressed in Leibniz's notation. As that notation suggests,

  5. Glossary of order theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_order_theory

    A total order T is a partial order in which, for each x and y in T, we have xy or yx. Total orders are also called linear orders or chains. Total relation. Synonym for Connected relation. Transitive relation. A relation R on a set X is transitive, if x R y and y R z imply x R z, for all elements x, y, z in X. Transitive closure.

  6. Negative relationship - Wikipedia

    en.wikipedia.org/wiki/Negative_relationship

    A negative correlation between variables is also called inverse correlation. Negative correlation can be seen geometrically when two normalized random vectors are viewed as points on a sphere, and the correlation between them is the cosine of the circular arc of separation of the points on a great circle of the sphere. [ 1 ]

  7. Comparability graph - Wikipedia

    en.wikipedia.org/wiki/Comparability_graph

    Equivalently, a comparability graph is a graph that has a transitive orientation, [3] an assignment of directions to the edges of the graph (i.e. an orientation of the graph) such that the adjacency relation of the resulting directed graph is transitive: whenever there exist directed edges (x,y) and (y,z), there must exist an edge (x,z).

  8. Transitivity - Wikipedia

    en.wikipedia.org/wiki/Transitivity

    Vertex-transitive graph, a graph whose automorphism group acts transitively upon its vertices Transitive set a set A such that whenever x ∈ A , and yx , then y ∈ A Topological transitivity property of a continuous map for which every open subset U' of the phase space intersects every other open subset V , when going along trajectory

  9. Inverse function theorem - Wikipedia

    en.wikipedia.org/wiki/Inverse_function_theorem

    The inverse function theorem can also be generalized to differentiable maps between Banach spaces X and Y. [20] Let U be an open neighbourhood of the origin in X and F : U → Y {\displaystyle F:U\to Y\!} a continuously differentiable function, and assume that the Fréchet derivative d F 0 : XY {\displaystyle dF_{0}:X\to Y\!} of F at 0 is ...