@inbook{10.2307/j.ctt1r2fwt.14,
ISBN = {9780691152714},
URL = {http://www.jstor.org/stable/j.ctt1r2fwt.14},
abstract = {One of the most important subjects in 19th-century mathematics was number theory. This had been rewritten by Gauss in hisDisquisitiones Arithmeticae(1801) on the back of considerable work by Euler, Lagrange, and Legendre, and had become something of a German specialty. Almost every major German mathematician of the period sought to contribute to itâ€”Weierstrass is the most notable exceptionâ€”and they collectively gave the subject a strong algebraic aspect, although Jacobi, Dirichlet, and Riemann also developed profound analytical methods.The simplest topic in this rapidly growing field was that of binary quadratic forms. These are expressions of the 𝑎𝑥²+𝑏𝑥𝑦+𝑐𝑦², where},
bookauthor = {JEREMY GRAY},
booktitle = {Henri Poincare: A Scientific Biography},
pages = {467--508},
publisher = {Princeton University Press},
title = {Interventions in Pure Mathematics},
year = {2013}
}