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  2. Grandi's series - Wikipedia

    en.wikipedia.org/wiki/Grandi's_series

    (in which, after five initial +1 terms, the terms alternate in pairs of +1 and −1 terms – the infinitude of both +1s and −1s allows any finite number of 1s or −1s to be prepended, by Hilbert's paradox of the Grand Hotel) is a permutation of Grandi's series in which each value in the rearranged series corresponds to a value that is at ...

  3. 1 + 2 + 3 + 4 + ⋯ - ⋯ - Wikipedia

    en.wikipedia.org/wiki/1_%2B_2_%2B_3_%2B_4_%2B_%E...

    which increases without bound as n goes to infinity. ... of the series might be, call it c = 1 + 2 + 3 ... of an infinite number of terms of the series: 1 + 2 + 3 ...

  4. List of mathematical series - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_series

    An infinite series of any rational function of can be reduced to a finite series of polygamma functions, by use of partial fraction decomposition, [8] as explained here. This fact can also be applied to finite series of rational functions, allowing the result to be computed in constant time even when the series contains a large number of terms.

  5. Series (mathematics) - Wikipedia

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

    When every term of a series is a non-negative real number, for instance when the terms are the absolute values of another series of real numbers or complex numbers, the sequence of partial sums is non-decreasing. Therefore a series with non-negative terms converges if and only if the sequence of partial sums is bounded, and so finding a bound ...

  6. 1 + 2 + 4 + 8 + ⋯ - ⋯ - Wikipedia

    en.wikipedia.org/wiki/1_%2B_2_%2B_4_%2B_8_%2B_%E...

    The first four partial sums of 1 + 2 + 4 + 8 + ⋯. In mathematics, 1 + 2 + 4 + 8 + ⋯ is the infinite series whose terms are the successive powers of two. As a geometric series, it is characterized by its first term, 1, and its common ratio, 2. As a series of real numbers it diverges to infinity, so the sum of this series is infinity.

  7. List of representations of e - Wikipedia

    en.wikipedia.org/wiki/List_of_representations_of_e

    The number e can be expressed as the sum of the following infinite series: = =! for any real number x. In the special case where x = 1 or −1, we have: = =!, [2] and = = ()!. ...

  8. Sequence - Wikipedia

    en.wikipedia.org/wiki/Sequence

    An infinite sequence of real numbers (in blue). This sequence is neither increasing, decreasing, convergent, nor Cauchy.It is, however, bounded. In mathematics, a sequence is an enumerated collection of objects in which repetitions are allowed and order matters.

  9. Sylvester's sequence - Wikipedia

    en.wikipedia.org/wiki/Sylvester's_sequence

    for a number E that is approximately 1.26408473530530... [10] (sequence A076393 in the OEIS). This formula has the effect of the following algorithm: s 0 is the nearest integer to E 2; s 1 is the nearest integer to E 4; s 2 is the nearest integer to E 8; for s n, take E 2, square it n more times, and take the nearest integer.