Mathematics
Found in 198 Collections and/or Records:
'Praelectiones Astronomicae' (excerpt), 07 June 1706
A critique of the Keplerian ellipse from William Whiston's Praelectiones, (1707), which were also published in English in 1715 and 1728. Gregory's handwritten note at the bottom suggests that he or Sir Edmund Halley helped with corrections.
Primo designatur..., 1680's
Probl: 13. lib. 3tii Diophanti, s.d.
A jotting on Diophantus.
Probl: Arith: C. Campbell, s.d.
Notes on parabolae from Colin Campbell 'of Ardhattan', possibly in his hand, and another page of commentary and calculation, possibly in the hand of James Gregory. There follow 3 more pages of scattered rumination on hyperbolae and ellipses in David's hand.
Probl: Cartesii de Quadrato a J.G., 24 December 1670
Two pages of correspondence from James Gregory to John Collins.
Probl: de Circulo, s.d.
A paragraph proposing a problem concerning the area and parts of a divided circle. This item is out of sequence, glued to the back of C 94.
Probl: impossibile de max: et min., c1696
A quandary, attributed to no one, but on paleographic grounds probably coeval with item 5 in Folio C.
Probl: indeterminatus Arith: D. Ozonam, s.d.
An arithmetic proof. The 'D. Ozonam' may be Jacques Ozonam (1640-1717), famous for his 1693 "Méthode de lever les planes et les cartes..."
Probl: Vincentii Viviani, 2 August 1693
An unsuccessful attempt to prove Viviani's solution to the Florentine problem.
Problema Alhazeni, c1690
Huygens's treatment of a problem by Alhazen, which appears to have been copied out at the same time as item 23 before.