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  2. National Origins Formula - Wikipedia

    en.wikipedia.org/wiki/National_Origins_Formula

    The total number of U.S. inhabitants in 1920 with national origins in quota countries was 89,506,558 so the national origins formula f expressed mathematically as f = ⁠ n / 89,506,558 ⁠ = ⁠ q / 150,000 ⁠, where n is the number of inhabitants of any given national origin and q is the quota, hence to convert n into q required ...

  3. Dehn invariant - Wikipedia

    en.wikipedia.org/wiki/Dehn_invariant

    [3] Unlike some of the other Hilbert problems, the answer to the third problem came very quickly. In fact, Raoul Bricard had already claimed it as a theorem in 1896, but with a proof that turned out to be incomplete. [4] Hilbert's student Max Dehn, in his 1900 habilitation thesis, invented the Dehn invariant in order to solve this problem. Dehn ...

  4. Multiset - Wikipedia

    en.wikipedia.org/wiki/Multiset

    The number of vertical lines is 41. The number of multisets of cardinality 18 is then the number of ways to arrange the 41 vertical lines among the 18 + 41 characters, and is thus the number of subsets of cardinality 41 of a set of cardinality 18 + 41. Equivalently, it is the number of ways to arrange the 18 dots among ...

  5. Empirical Bayes method - Wikipedia

    en.wikipedia.org/wiki/Empirical_Bayes_method

    Empirical Bayes methods can be seen as an approximation to a fully Bayesian treatment of a hierarchical Bayes model.. In, for example, a two-stage hierarchical Bayes model, observed data = {,, …,} are assumed to be generated from an unobserved set of parameters = {,, …,} according to a probability distribution ().

  6. Representation theory of the Lorentz group - Wikipedia

    en.wikipedia.org/wiki/Representation_theory_of...

    Then, for example, (0, ⁠ 3 / 2 ⁠) and (1, ⁠ 1 / 2 ⁠) are a spin representations of dimensions 2⋅ ⁠ 3 / 2 ⁠ + 1 = 4 and (2 + 1)(2⋅ ⁠ 1 / 2 ⁠ + 1) = 6 respectively. According to the above paragraph, there are subspaces with spin both ⁠ 3 / 2 ⁠ and ⁠ 1 / 2 ⁠ in the last two cases, so these representations cannot likely ...

  7. Haas VF-19 - Wikipedia

    en.wikipedia.org/wiki/Haas_VF-19

    The Haas VF-19 is a Formula One car designed by Italian manufacturer Dallara for the Haas F1 Team to compete in the 2019 FIA Formula One World Championship. The car was driven by Romain Grosjean and Kevin Magnussen, with additional testing work carried out by Pietro Fittipaldi. [2] [3] The VF-19 made its competitive debut at the 2019 Australian ...

  8. Agfacolor - Wikipedia

    en.wikipedia.org/wiki/Agfacolor

    Agfacolor was a series of color film products made by Agfa of Germany. The first Agfacolor, introduced in 1932, was a film-based version of their Agfa-Farbenplatte (Agfa color plate), [1] a "screen plate" product similar to the French Autochrome.