Showing Records: 81 - 90 of 318
De Mensura ... Spiralium, 1682-1708
Two discussions of the properties of spirals, after Sluse.
De Parabolarum..., s.d.
A short discussion of parabolae.
De problematibus arithmeticis et geometricis in generali consideratis et horum Historia, s.d.
A short treatise on some of the recent evolution in maths.
De ratione studii mathematici consilium, 1693
Draft, not in Gregory's usual hand, of a paper written for the direction of students. Another copy, under this same title, is in Francis Pringle's notebook, Dc.6.12. Two others, under different titles, are in Folio C (see below), as number 112, and in fol. 85 of the Royal Society of London's MS 247.
De rebus ... horizontem non visis..., s.d.
Ruminations on atmospheric effects near the horizon.
De Refractione ad diversa media facta, s.d.
A page about refraction through different media.
De resolutione equationum cubicarum, s.d.
Notes on Leibniz on solving cubic equations.
De resolutione equationum cubicarum, 1684-1696
Notes on a universal theorem on the forces on inclined planes, possibly part of his notes on Huygen's Horologium Oscillatorium, now lost.
De Spatio Hyperbolico infinito, s.d.
A note, flanked by two leaves full of calculations that may or may not be related to it, on the division into segments of hyperbolic curves.
De ... usura, May 1690
An exercise in interest calculation, with a note that the same results are to be had by logarithm. David Gregory incorrectly labelled this small sheet '81': to go with his index it must be item 82.