arXiv math/03113092003-11-18math.NTmath.HO

Higher Descent on Pell Conics I. From Legendre to Selmer

Franz Lemmermeyer

备注：: 19 pages, 2 figures

英文摘要：

This article deals with the history of certain aspects of the Pell equation X$^2$ - D y$^2$ = 4. We briefly discuss explicit units, and then study the history of Legendre's equations ax$^2$ - b y$^2$ = 4 with ab=D.

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