• Thumbnail for Wallis product
    In mathematics, the Wallis product for π, published in 1656 by John Wallis, states that π 2 = ∏ n = 1 ∞ 4 n 2 4 n 2 − 1 = ∏ n = 1 ∞ ( 2 n 2 n − 1 ⋅ 2 n...
    9 KB (2,272 words) - 04:12, 14 December 2023
  • used as a tool to prove theorems in mathematical analysis. The Wallis infinite product for π {\displaystyle \pi } π 2 = ∏ n = 1 ∞ 4 n 2 4 n 2 − 1 = ∏...
    35 KB (6,868 words) - 18:16, 17 April 2024
  • Thumbnail for John Wallis
    two daughters Elizabeth Wallis (1658–1703), married William Benson (1649–1691) of Towcester, died with no issue John Wallis was born in Ashford, Kent...
    39 KB (5,116 words) - 08:34, 12 May 2024
  • (Viète's formula, the first published infinite product in mathematics) and John Wallis (Wallis product): 2 π = 2 2 ⋅ 2 + 2 2 ⋅ 2 + 2 + 2 2 ⋅ ⋯ {\displaystyle...
    11 KB (1,460 words) - 20:29, 28 December 2023
  • Thumbnail for Sierpiński carpet
    the Wallis product, the area of the resulting set is π/4, unlike the standard Sierpiński carpet which has zero limiting area. Although the Wallis sieve...
    10 KB (1,245 words) - 21:56, 7 January 2024
  • Thumbnail for Wallis and Futuna
    Wallis and Futuna, officially the Territory of the Wallis and Futuna Islands (/ˈwɒlɪs ... fuːˈtuːnə/), is a French island collectivity in the South Pacific...
    52 KB (3,952 words) - 05:16, 27 May 2024
  • more precisely in analysis, the Wallis integrals constitute a family of integrals introduced by John Wallis. The Wallis integrals are the terms of the...
    12 KB (2,558 words) - 18:42, 7 April 2023
  • {2}}}}}}{2}}\cdots } In 1655, John Wallis published what is now known as Wallis product, also an infinite product: π 2 = ( 2 1 ⋅ 2 3 ) ⋅ ( 4 3 ⋅ 4 5 )...
    145 KB (17,361 words) - 12:03, 26 May 2024
  • Mittag-Leffler's theorem Wallis product, which can be derived from this theorem applied to the sine function Blaschke product A zero of order m = 0 at...
    10 KB (1,872 words) - 12:17, 9 April 2024
  • Thumbnail for Kruskal–Wallis test
    The Kruskal–Wallis test by ranks, Kruskal–Wallis H {\displaystyle H} test (named after William Kruskal and W. Allen Wallis), or one-way ANOVA on ranks...
    19 KB (2,415 words) - 14:19, 5 March 2024
  • constant of proportionality for this correction can be found from the Wallis product, which expresses π {\displaystyle \pi } as a limiting ratio of factorials...
    70 KB (8,400 words) - 19:13, 19 May 2024
  • {\frac {6}{7}}\cdot {\frac {8}{7}}\cdot {\frac {8}{9}}\cdots } (see also Wallis product) π 2 = ∏ n = 1 ∞ ( 1 + 1 n ) ( − 1 ) n + 1 = ( 1 + 1 1 ) + 1 ( 1 + 1...
    36 KB (7,443 words) - 07:08, 16 May 2024
  • Thumbnail for Superparticular ratio
    or more terms in their continued fractions, are superpartient. The Wallis product ∏ n = 1 ∞ ( 2 n 2 n − 1 ⋅ 2 n 2 n + 1 ) = 2 1 ⋅ 2 3 ⋅ 4 3 ⋅ 4 5 ⋅ 6...
    11 KB (1,062 words) - 15:42, 10 June 2023
  • Piphilology Proof that π is irrational Proof that 22/7 exceeds π Proof of Wallis product Rabbi Nehemiah Radian Ramanujan–Sato series Rhind Mathematical Papyrus...
    3 KB (159 words) - 00:58, 18 January 2024
  • Thumbnail for Stirling's approximation
    limit on both sides as n {\displaystyle n} tends to infinity and using Wallis' product, which shows that e y = 2 π {\displaystyle e^{y}={\sqrt {2\pi }}} ...
    27 KB (4,933 words) - 21:03, 19 May 2024
  • Thumbnail for Bohr model
    the rest of the atom. The hydrogen formula also coincides with the Wallis product. The combination of natural constants in the energy formula is called...
    64 KB (9,061 words) - 23:34, 26 May 2024
  • derivation of a new formula for e,[non-primary source needed] whereby the Wallis product for π is modified by taking roots of its terms: e 2 = ( 2 1 ) 1 / 2...
    4 KB (415 words) - 21:35, 27 April 2024
  • Thumbnail for Double factorial
    certain trigonometric integrals that arise in the derivation of the Wallis product. Double factorials also arise in expressing the volume of a hypersphere...
    28 KB (4,265 words) - 06:57, 18 May 2024
  • Thumbnail for Lemniscate constant
    Wallis-like formula for clover curves; here the special case of the lemniscate is slightly transformed, for clarity. Hyde, Trevor (2014). "A Wallis product...
    23 KB (4,144 words) - 20:06, 9 May 2024
  • Thumbnail for Approximations of π
    seven digits of π from a 96-sided polygon. In 1656, John Wallis published the Wallis product: π 2 = ∏ n = 1 ∞ 4 n 2 4 n 2 − 1 = ∏ n = 1 ∞ ( 2 n 2 n −...
    87 KB (12,416 words) - 08:20, 22 May 2024
  • Thumbnail for Pearson correlation coefficient
    data. It is the ratio between the covariance of two variables and the product of their standard deviations; thus, it is essentially a normalized measurement...
    56 KB (8,208 words) - 17:22, 23 May 2024
  • Thumbnail for E. A. Wallis Budge
    related to E. A. Wallis Budge at Wikimedia Commons Texts Works by or about E. A. Wallis Budge at Wikisource Works by Ernest Alfred Wallis Budge at Project...
    17 KB (2,079 words) - 00:57, 26 March 2024
  • very slow convergence Wallis product — infinite product converging slowly to π/2 Viète's formula — more complicated infinite product which converges faster...
    70 KB (8,344 words) - 02:48, 7 March 2024
  • 4 arctan (1) and the fourth and fifth one can be derived using the Wallis product. π = 3 + 1 6 + 1 3 + 2 3 6 ⋅ 1 2 + 1 2 1 3 + 2 3 + 3 3 + 4 3 6 ⋅ 2 2...
    76 KB (9,846 words) - 17:47, 24 May 2024
  • Thumbnail for Viète's formula
    Viète's formula (category Infinite products)
    This convergence rate compares very favorably with the Wallis product, a later infinite product formula for π. Although Viète himself used his formula...
    20 KB (2,249 words) - 22:14, 13 March 2024
  • Thumbnail for Wallis (retailer)
    Wallis is an online British women's clothing brand. Previously a retailer, Wallis operated from 134 stores and 126 concessions across the UK and Republic...
    8 KB (776 words) - 11:14, 16 September 2023
  • Thumbnail for Economy of Wallis and Futuna
    This page is an overview of the economy of Wallis and Futuna. The GDP of Wallis and Futuna in 2005 was 188 million US dollars at market exchange rates...
    4 KB (400 words) - 15:36, 22 March 2022
  • Thumbnail for List of pitch intervals
    231/48 231/48 play 31 steps in 48 equal temperament 48 781.79 π : 2 play Wallis product 782.49 G↑- 11 : 7 11 : 7 play Undecimal minor sixth, undecimal augmented...
    101 KB (977 words) - 09:10, 17 March 2023
  • Thumbnail for Diana Wallis
    related to Diana Wallis. Diana Wallis's personal website Diana Wallis profile at the European Parliament Debrett's People of Today Diana Wallis profile on Micandidate...
    26 KB (2,619 words) - 03:53, 2 May 2024
  • Thumbnail for Valais
    Valais (redirect from Kanton Wallis)
    mountains of Valais Arpitan: Valês; German: Wallis [ˈvalɪs] ) French: Canton du Valais; German: Kanton Wallis; in other official Swiss languages outside...
    54 KB (5,720 words) - 11:11, 19 May 2024