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  2. Thomae's function - Wikipedia

    en.wikipedia.org/wiki/Thomae's_function

    The function's integral is equal to over any set because the function is equal to zero almost everywhere. If G = { ( x , f ( x ) ) : x ∈ ( 0 , 1 ) } ⊂ R 2 {\displaystyle G=\{\,(x,f(x)):x\in (0,1)\,\}\subset \mathbb {R} ^{2}} is the graph of the restriction of f {\displaystyle f} to ( 0 , 1 ) {\displaystyle (0,1)} , then the box-counting ...

  3. Picard–Fuchs equation - Wikipedia

    en.wikipedia.org/wiki/Picard–Fuchs_equation

    This equation can be cast into the form of the hypergeometric differential equation.It has two linearly independent solutions, called the periods of elliptic functions. The ratio of the two periods is equal to the period ratio τ, the standard coordinate on the upper-half plane.

  4. Grace–Walsh–Szegő theorem - Wikipedia

    en.wikipedia.org/wiki/Grace–Walsh–Szegő_theorem

    Suppose ƒ(z 1, ..., z n) is a polynomial with complex coefficients, and that it is symmetric, i.e. invariant under permutations of the variables, and; multi-affine, i.e. affine in each variable separately. Let A be a circular region in the complex plane.

  5. Extreme value theorem - Wikipedia

    en.wikipedia.org/wiki/Extreme_value_theorem

    The function ƒ is also naturally extended to a function ƒ* defined on the hyperreals between 0 and 1. Note that in the standard setting (when N is finite), a point with the maximal value of ƒ can always be chosen among the N +1 points x i , by induction.

  6. Basel problem - Wikipedia

    en.wikipedia.org/wiki/Basel_problem

    The Basel problem is a problem in mathematical analysis with relevance to number theory, concerning an infinite sum of inverse squares.It was first posed by Pietro Mengoli in 1650 and solved by Leonhard Euler in 1734, [1] and read on 5 December 1735 in The Saint Petersburg Academy of Sciences. [2]

  7. Quantile function - Wikipedia

    en.wikipedia.org/wiki/Quantile_function

    The cumulative distribution function (shown as F(x)) gives the p values as a function of the q values. The quantile function does the opposite: it gives the q values as a function of the p values. Note that the portion of F(x) in red is a horizontal line segment.

  8. Dirichlet function - Wikipedia

    en.wikipedia.org/wiki/Dirichlet_function

    In mathematics, the Dirichlet function [1] [2] is the indicator function of the set of rational numbers, i.e. () = if x is a rational number and () = if x is not a rational number (i.e. is an irrational number).

  9. Uniform limit theorem - Wikipedia

    en.wikipedia.org/wiki/Uniform_limit_theorem

    Then each function ƒ n is continuous, but the sequence converges pointwise to the discontinuous function ƒ that is zero on [0, 1) but has ƒ(1) = 1. Another example is shown in the adjacent image. In terms of function spaces, the uniform limit theorem says that the space C(X, Y) of all continuous functions from a topological space X to a ...