Essai sur la théorie des nombres
Essai sur la théorie des nombres is a 1798 mathematical treatise by Adrien Marie Legendre, published in Paris by Duprat for scholars of number theory. Its one picture is a dense printed table with three columns headed Formule, Diviseurs quadratiques and Diviseurs linéaires, listing prime divisors as rows of italic notation and numerals. A designer might take its rigid ruled grid and tight typographic rhythm as a model for structured data layouts.
