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  2. Function word - Wikipedia

    en.wikipedia.org/wiki/Function_word

    Function word. In linguistics, function words (also called functors) [1] are words that have little lexical meaning or have ambiguous meaning and express grammatical relationships among other words within a sentence, or specify the attitude or mood of the speaker. They signal the structural relationships that words have to one another and are ...

  3. 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.

  4. History of the function concept - Wikipedia

    en.wikipedia.org/wiki/History_of_the_function...

    History of the function concept. The mathematical concept of a function dates from the 17th century in connection with the development of the calculus; for example, the slope of a graph at a point was regarded as a function of the x -coordinate of the point. Functions were not explicitly considered in antiquity, but some precursors of the ...

  5. Functional (mathematics) - Wikipedia

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

    In mathematics, a functional is a certain type of function. The exact definition of the term varies depending on the subfield (and sometimes even the author). into the field of real or complex numbers. [2][3] In functional analysis, the term linear functional is a synonym of linear form; [3][4][5] that is, it is a scalar-valued linear map.

  6. Map (mathematics) - Wikipedia

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

    Map (mathematics) A map is a function, as in the association of any of the four colored shapes in X to its color in Y. In mathematics, a map or mapping is a function in its general sense. [1] These terms may have originated as from the process of making a geographical map: mapping the Earth surface to a sheet of paper.

  7. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    Linear function: First degree polynomial, graph is a straight line. Quadratic function: Second degree polynomial, graph is a parabola. Cubic function: Third degree polynomial. Quartic function: Fourth degree polynomial. Quintic function: Fifth degree polynomial. Rational functions: A ratio of two polynomials. n th root.

  8. Monotonic function - Wikipedia

    en.wikipedia.org/wiki/Monotonic_function

    A monotonically non-increasing function. Figure 3. A function that is not monotonic. In mathematics, a monotonic function (or monotone function) is a function between ordered sets that preserves or reverses the given order. [1][2][3] This concept first arose in calculus, and was later generalized to the more abstract setting of order theory.

  9. Function (biology) - Wikipedia

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

    In evolutionary biology, function is the reason some object or process occurred in a system that evolved through natural selection. That reason is typically that it achieves some result, such as that chlorophyll helps to capture the energy of sunlight in photosynthesis. Hence, the organism that contains it is more likely to survive and ...

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