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Displaying results 1 to 4 of 4.

  1. The works of Sir Thomas Urquhart of Cromarty, knight
    Author: Urquhart, Thomas
    Published: 1971
    Publisher:  AMS Press, New York

    Location:
    Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky
    Signature:
    N 2190
    Inter-library loan:
    No inter-library loan
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Print
    Series: Maitland club. Publications. no. 30
    Subjects: Trigonometry; Language, Universal; Trigonométrie; Langue universelle; trigonometry; Language, Universal; Trigonometry; Biographies
    Scope: XXII, 419 Seiten
    Notes:

    Facsimile reprint of the edition published: Edinburgh, Maitland Club,1834

    Epigrams: divine and moral ... London, 1641. -- The trissotetras: or, A most exquisite table for resolving all manner of triangles ... London, 1645. -- [Pantochronochanon (romanized form)]: or, A peculiar promptuary of time ... deducing the true pedigree and lineal descent of the ... Vrqvharts, in the house of Cromartie, since the creation of the world ... London, 1652. -- [Ekskyvalauron (romanized form)] or, The discovery of a most exquisite jewel ... Serving in this place, to frontal a vindication of the honour of Scotland ... London, 1652. -- Logopandecteision, or An introdvction to the vniversal langvage ... London, 1653.
  2. A novel estimator of earth's curvature (allowing for inference as well)
    Author: Bell, David R.; Ledoit, Olivier; Wolf, Michael
    Published: April 2023
    Publisher:  University of Zurich, Department of Economics, Zurich

    This paper estimates the curvature of the Earth, defined as one over its radius, without using any physics. The orthodox model is that the Earth is nearly spherical with a curvature of π/20, 000 km. By contrast, the heterodox flat-Earth model... more

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    Resolving-System (kostenfrei)
    Resolving-System (kostenfrei)

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    DS 191
    Inter-library loan:
    No inter-library loan

     

    This paper estimates the curvature of the Earth, defined as one over its radius, without using any physics. The orthodox model is that the Earth is nearly spherical with a curvature of π/20, 000 km. By contrast, the heterodox flat-Earth model stipulates a curvature of zero. Abstracting from the well-worn arguments for and against both models, rebuttals and counter-rebuttals ad infinitum, we propose a novel statistical methodology based on verifiable flight times along regularly scheduled commercial airline routes; this methodology allows for both estimating and making inference for the curvature. In particular, a formal hypothesis test resolutely rejects the flat-Earth model, whereas it does not reject the orthodox spherical-Earth model.

     
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/275649
    Series: Working paper series / University of Zurich, Department of Economics ; no. 431
    Subjects: Flat-Earth model; geodesy; nonlinear least squares; trigonometry
    Scope: 1 Online-Ressource (circa 30 Seiten), Illustrationen
  3. A novel estimator of earth's curvature (allowing for inference as well)
    Author: Bell, David R.; Ledoit, Olivier; Wolf, Michael
    Published: [2023]
    Publisher:  University of Zurich, Department of Economics, Zurich

    This paper estimates the curvature of the Earth, defined as one over its radius, without relying on physical measurements. The orthodox model states that the Earth is (nearly) spherical with a curvature of π/20'000 km. By contrast, the heterodox... more

    Access:
    Verlag (kostenfrei)
    Resolving-System (kostenfrei)
    Resolving-System (kostenfrei)

    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    DS 191
    Inter-library loan:
    No inter-library loan

     

    This paper estimates the curvature of the Earth, defined as one over its radius, without relying on physical measurements. The orthodox model states that the Earth is (nearly) spherical with a curvature of π/20'000 km. By contrast, the heterodox flat-Earth model stipulates a curvature of zero. Abstracting from the well-worn arguments for and against both models, rebuttals and counter-rebuttals ad infinitum, we propose a novel statistical methodology based on verifiable flight times along regularly scheduled commercial airline routes; this methodology allows for both estimating and making inference for Earth's curvature. In particular, a formal hypothesis test resolutely rejects the flat-Earth model, whereas it does not reject the orthodox spherical-Earth model.

     
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/278788
    Edition: This version: September 2023
    Series: Working paper series / University of Zurich, Department of Economics ; no. 431
    Subjects: Flat earth; flight times; nonlinear least squares; trigonometry
    Scope: 1 Online-Ressource (circa 27 Seiten), Illustrationen
  4. Avicenna’s Addendum to His Recension of Ptolemy’s ›Almagest‹
    Author: Nikfahm-Khubravan, Sajjad
    Published: 2025
    Publisher:  De Gruyter, Berlin

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