A Sixth Memoir upon Quantics, extracted from The Philosophical Transactions of the Royal Society, Vol. 149, Part I, 1859, pp. 61-90
Cambridge: Royal Society, 1859. 1st Edition. FIRST EDITION (extracted from the 1859 Philosophical Transactions) OF THE PAPER IN WHICH CAYLEY “LAID THE FOUNDATIONS OF NON-EUCLIDEAN GEOMETRY” & “DEMONSTRATED THAT EUCLIDEAN GEOMETRY WAS PART OF PROJECTIVE GEOMETRY RATHER THAN THE CONVERSE” (Pierpont, "Cayley’s Definition of Non-Euclidean Geometry," AJM 53, 1, 1931..... More