Mathematics
Found in 145 Collections and/or Records:
Contactus & Tetragonismus, 29 January 1704
A planning document for a general textbook on the calculus.
Contenta in supplemento Analytico N. Hanbury Cantabrigiensis, 1691
Gregory's reading notes in algebra.
Correctio numerorum...Algebrae D. Wallisii, 17 July 1697
Correctgions for chapter 109, page 470, in a forthcoming edition of Wallis's Algebra, which was meant to contain material of Gregory's.
Corrigenda to the Astronomiae, 1698-1699
Editorial issues in Gregory's major textbook.
Curva Cragio exhibitur, July 1687
Gregory, probably with Pitcairne at his side, sent these curves to Craige in Cambridge, challenging him to find their quadrature. Thus the writing that is not in Gregory's hand may be Craige's.
Curva foliata, c1693
Diagram and mathematical description of a foliate curve. A modern hand has pencilled in "7 a Schooten", referring to geometer Frans van Schooten (1615-1660).
De aequationibus Cubicis, s.d.
Gregory on cubic equations.
De affirmanda parallaxi magni orbis, cogitatum Hugenii, June 1693
A transcription of Christiaan Huygen's argument that because stars' observed radii are so insensibly small, the diameter of the earth's orbit relative to the stars' position is also insensible, and thus the parallax measurement, which ought to prove or disprove the Copernican layout of the heavens, is useless.
De Aleis Theorema, 1680
Thoughts on dice-throwing, written up in Leyden, and contained (once with other things?) under the rubric "Varia Observationes". One of those may have been item C 154, next in the volume.
De Cartesiana Constructione ..., c1680
A note, probably composed at Rotterdam, on the Latin edition of Rene Descartes' Geometria, (1659), published by Schooten.