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  2. List of mathematical series - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_series

    This page was last edited on 11 July 2024, at 22:00 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; ...

  3. Quartic equation - Wikipedia

    en.wikipedia.org/wiki/Quartic_equation

    The symmetric group S 4 on four elements has the Klein four-group as a normal subgroup. This suggests using a resolvent whose roots may be variously described as a discrete Fourier transform or a Hadamard matrix transform of the roots. Suppose r i for i from 0 to 3 are roots of + + + + = ()

  4. List of formulae involving π - Wikipedia

    en.wikipedia.org/wiki/List_of_formulae_involving_π

    3.11 Hypergeometric inversions. 3.12 Miscellaneous. 4 See also. 5 References. Toggle References subsection. 5.1 Notes. 5.2 Other. 6 Further reading. Toggle the table ...

  5. Ramanujan–Sato series - Wikipedia

    en.wikipedia.org/wiki/Ramanujan–Sato_series

    The first belongs to a family of formulas which were rigorously proven by the Chudnovsky brothers in 1989 [11] and later used to calculate 10 trillion digits of π in 2011. [12] The second formula, and the ones for higher levels, was established by H.H. Chan and S. Cooper in 2012.

  6. Secondary measure - Wikipedia

    en.wikipedia.org/wiki/Secondary_measure

    This can be iterated to obtain ρ 3 from ρ 2 and so on. Therefore, a sequence of successive secondary measures, created from ρ 0 = ρ, is such that ρ n+1 that is the secondary normalised measure deduced from ρ n. It is possible to clarify the density ρ n by using the orthogonal polynomials P n for ρ, the secondary polynomials Q n and the ...

  7. Games on AOL.com: Free online games, chat with others in real ...

    www.aol.com/games/play/masque-publishing/astralume

    Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

  8. Fresnel integral - Wikipedia

    en.wikipedia.org/wiki/Fresnel_integral

    The sector contour used to calculate the limits of the Fresnel integrals. This can be derived with any one of several methods. One of them [5] uses a contour integral of the function around the boundary of the sector-shaped region in the complex plane formed by the positive x-axis, the bisector of the first quadrant y = x with x ≥ 0, and a circular arc of radius R centered at the origin.

  9. 5 ways to tell if you’re on track for retirement — and 5 ...

    www.aol.com/finance/5-ways-tell-track-retirement...

    1. Use the Rule of 25 to get a ballpark number. A good rule of thumb to estimate your retirement savings goal is the Rule of 25.Simply multiply your desired annual retirement income by 25.