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  2. Absolutely and completely monotonic functions and sequences

    en.wikipedia.org/wiki/Absolutely_and_completely...

    In the case of a completely monotonic function, the function and its derivatives must be alternately non-negative and non-positive in its domain of definition which would imply that function and its derivatives are alternately monotonically increasing and monotonically decreasing functions.

  3. Monotonic function - Wikipedia

    en.wikipedia.org/wiki/Monotonic_function

    A function is unimodal if it is monotonically increasing up to some point (the mode) and then monotonically decreasing. When f {\displaystyle f} is a strictly monotonic function, then f {\displaystyle f} is injective on its domain, and if T {\displaystyle T} is the range of f {\displaystyle f} , then there is an inverse function on T ...

  4. Derivative test - Wikipedia

    en.wikipedia.org/wiki/Derivative_test

    Stated precisely, suppose that f is a real-valued function defined on some open interval containing the point x and suppose further that f is continuous at x.. If there exists a positive number r > 0 such that f is weakly increasing on (x − r, x] and weakly decreasing on [x, x + r), then f has a local maximum at x.

  5. Monotone comparative statics - Wikipedia

    en.wikipedia.org/wiki/Monotone_comparative_statics

    Monotone comparative statics is a sub-field of comparative statics that focuses on the conditions under which endogenous variables undergo monotone changes (that is, either increasing or decreasing) when there is a change in the exogenous parameters.

  6. Function (mathematics) - Wikipedia

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

    In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. [1] The set X is called the domain of the function [2] and the set Y is called the codomain of the function. [3] Functions were originally the idealization of how a varying quantity depends on another quantity.

  7. Isotonic regression - Wikipedia

    en.wikipedia.org/wiki/Isotonic_regression

    In statistics and numerical analysis, isotonic regression or monotonic regression is the technique of fitting a free-form line to a sequence of observations such that the fitted line is non-decreasing (or non-increasing) everywhere, and lies as close to the observations as possible.

  8. Construction of t-norms - Wikipedia

    en.wikipedia.org/wiki/Construction_of_t-norms

    A family of t-norms T p parameterized by p is increasing if T p (x, y) ≤ T q (x, y) for all x, y in [0, 1] whenever p ≤ q (similarly for decreasing and strictly increasing or decreasing). A family of t-norms T p is continuous with respect to the parameter p if = for all values p 0 of the parameter.

  9. Monotone likelihood ratio - Wikipedia

    en.wikipedia.org/wiki/Monotone_likelihood_ratio

    Download as PDF; Printable version ... stochastic dominance and increasing hazard ... is a non-decreasing function of . Then we say the family of ...