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  2. Fukui function - Wikipedia

    en.wikipedia.org/wiki/Fukui_function

    The condensed Fukui function or condensed reactivity indicator is the same idea, but applied to an atom within a molecule, rather than a point in three-dimensional space. The Fukui function allows one to predict, using density functional theory , where the most electrophilic and nucleophilic sites of a molecule are.

  3. Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Fourier_transform

    Therefore, the Fourier transform goes from one space of functions to a different space of functions: functions which have a different domain of definition. In general, ξ {\displaystyle \xi } must always be taken to be a linear form on the space of its domain, which is to say that the second real line is the dual space of the first real line.

  4. Activation function - Wikipedia

    en.wikipedia.org/wiki/Activation_function

    The activation function of a node in an artificial neural network is a function that calculates the output of the node based on its individual inputs and their weights. Nontrivial problems can be solved using only a few nodes if the activation function is nonlinear .

  5. Darboux's theorem (analysis) - Wikipedia

    en.wikipedia.org/wiki/Darboux's_theorem_(analysis)

    By Darboux's theorem, the derivative of any differentiable function is a Darboux function. In particular, the derivative of the function ⁡ (/) is a Darboux function even though it is not continuous at one point. An example of a Darboux function that is nowhere continuous is the Conway base 13 function.

  6. Argument (complex analysis) - Wikipedia

    en.wikipedia.org/wiki/Argument_(complex_analysis)

    Figure 1. This Argand diagram represents the complex number lying on a plane.For each point on the plane, arg is the function which returns the angle . In mathematics (particularly in complex analysis), the argument of a complex number z, denoted arg(z), is the angle between the positive real axis and the line joining the origin and z, represented as a point in the complex plane, shown as in ...

  7. Upside-down plane: Experts weigh in on Delta flight flip-over ...

    www.aol.com/upside-down-plane-experts-weigh...

    Where they really perform their true function is during experiences like this when their experience and training comes into play.” Despite the high-profile crashes this year, "we are in the ...

  8. List of mathematical functions - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_functions

    Thomae's function: is a function that is continuous at all irrational numbers and discontinuous at all rational numbers. It is also a modification of Dirichlet function and sometimes called Riemann function. Kronecker delta function: is a function of two variables, usually integers, which is 1 if they are equal, and 0 otherwise.

  9. Drifting Detective: Tragedy in the Red Valley - Wikipedia

    en.wikipedia.org/wiki/Drifting_Detective:...

    Drifting Detective: Tragedy in the Red Valley (風来坊探偵 赤い谷の惨劇, Fūraibō tantei: akai tani no sangeki) (also known as Duel in the Valley) is a 1961 Japanese film directed by Kinji Fukasaku and starring Sonny Chiba.