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  2. List of limits - Wikipedia

    en.wikipedia.org/wiki/List_of_limits

    In these limits, the infinitesimal change is often denoted or .If () is differentiable at , (+) = ′ ().This is the definition of the derivative.All differentiation rules can also be reframed as rules involving limits.

  3. Limit inferior and limit superior - Wikipedia

    en.wikipedia.org/wiki/Limit_inferior_and_limit...

    lim sup X n = {0,1} lim inf X n = { } That is, the four elements that do not match the pattern do not affect the lim inf and lim sup because there are only finitely many of them. In fact, these elements could be placed anywhere in the sequence. So long as the tails of the sequence are maintained, the outer and inner limits will be unchanged.

  4. Limit (mathematics) - Wikipedia

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

    In mathematics, a limit is the value that a function (or sequence) approaches as the argument (or index) approaches some value. [1] Limits of functions are essential to calculus and mathematical analysis, and are used to define continuity, derivatives, and integrals.

  5. Limit of a function - Wikipedia

    en.wikipedia.org/wiki/Limit_of_a_function

    [1] In his 1821 book Cours d'analyse , Augustin-Louis Cauchy discussed variable quantities, infinitesimals and limits, and defined continuity of y = f ( x ) {\displaystyle y=f(x)} by saying that an infinitesimal change in x necessarily produces an infinitesimal change in y , while Grabiner claims that he used a rigorous epsilon-delta definition ...

  6. Limit comparison test - Wikipedia

    en.wikipedia.org/wiki/Limit_comparison_test

    Rinaldo B. Schinazi: From Calculus to Analysis.Springer, 2011, ISBN 9780817682897, pp. 50 Michele Longo and Vincenzo Valori: The Comparison Test: Not Just for Nonnegative Series.

  7. Cauchy–Hadamard theorem - Wikipedia

    en.wikipedia.org/wiki/Cauchy–Hadamard_theorem

    It was published in 1821 by Cauchy, [1] but remained relatively unknown until Hadamard rediscovered it. [2] Hadamard's first publication of this result was in 1888; [ 3 ] he also included it as part of his 1892 Ph.D. thesis.

  8. Central limit theorem - Wikipedia

    en.wikipedia.org/wiki/Central_limit_theorem

    The distribution of ⁠ X 1 + ⋯ + X n / √ n ⁠ need not be approximately normal (in fact, it can be uniform). [38] However, the distribution of c 1 X 1 + ⋯ + c n X n is close to (,) (in the total variation distance) for most vectors (c 1, ..., c n) according to the uniform distribution on the sphere c 2 1 + ⋯ + c 2 n = 1.

  9. Natural density - Wikipedia

    en.wikipedia.org/wiki/Natural_density

    A subset A of positive integers has natural density α if the proportion of elements of A among all natural numbers from 1 to n converges to α as n tends to infinity.. More explicitly, if one defines for any natural number n the counting function a(n) as the number of elements of A less than or equal to n, then the natural density of A being α exactly means that [1]