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  2. Collatz conjecture - Wikipedia

    en.wikipedia.org/wiki/Collatz_conjecture

    As an illustration of this, the parity cycle (1 1 0 0 1 1 0 0) and its sub-cycle (1 1 0 0) are associated to the same fraction ⁠ 5 / 7 ⁠ when reduced to lowest terms. In this context, assuming the validity of the Collatz conjecture implies that (1 0) and (0 1) are the only parity cycles generated by positive whole numbers (1 and 2 ...

  3. Limit of a sequence - Wikipedia

    en.wikipedia.org/wiki/Limit_of_a_sequence

    A sequence that does not converge is said to be divergent. [3] The limit of a sequence is said to be the fundamental notion on which the whole of mathematical analysis ultimately rests. [1] Limits can be defined in any metric or topological space, but are usually first encountered in the real numbers.

  4. Cauchy sequence - Wikipedia

    en.wikipedia.org/wiki/Cauchy_sequence

    The utility of Cauchy sequences lies in the fact that in a complete metric space (one where all such sequences are known to converge to a limit), the criterion for convergence depends only on the terms of the sequence itself, as opposed to the definition of convergence, which uses the limit value as well as the terms.

  5. Sequence - Wikipedia

    en.wikipedia.org/wiki/Sequence

    From the graph we can see that the sequence is converging to the limit zero as n increases. An important property of a sequence is convergence. If a sequence converges, it converges to a particular value known as the limit. If a sequence converges to some limit, then it is convergent. A sequence that does not converge is divergent.

  6. Modes of convergence - Wikipedia

    en.wikipedia.org/wiki/Modes_of_convergence

    Absolute convergence implies Cauchy convergence of the sequence of partial sums (by the triangle inequality), which in turn implies absolute convergence of some grouping (not reordering). The sequence of partial sums obtained by grouping is a subsequence of the partial sums of the original series.

  7. Rate of convergence - Wikipedia

    en.wikipedia.org/wiki/Rate_of_convergence

    A sequence of discretized approximations () of some continuous-domain function that converges to this target, together with a corresponding sequence of discretization scale parameters () that converge to 0, is said to have asymptotic order of convergence and asymptotic rate of convergence if

  8. Real analysis - Wikipedia

    en.wikipedia.org/wiki/Real_analysis

    1.5.1 Uniform and pointwise convergence for sequences of functions. 1.6 Compactness. ... the graph is a single unbroken curve with no "holes" or ... ISBN 978-0-07 ...

  9. Convergence of random variables - Wikipedia

    en.wikipedia.org/wiki/Convergence_of_random...

    As an example one may consider random variables with densities f n (x) = (1 + cos(2πnx))1 (0,1). These random variables converge in distribution to a uniform U(0, 1), whereas their densities do not converge at all. [3] However, according to Scheffé’s theorem, convergence of the probability density functions implies convergence in ...