De formis linearibus, in quibus continentur divisores primi quarundam formularum graduum superiorum commentatio (...).

12mo : 27 pp. (fox. and brown. throughout).

Sewn (formerly bound).

Very rare academical thesis presented to Breslau University (Wroclaw, Poland) and only Latin mathematical work of P.G. Lejeune Dirichlet (1805-1859), German mathematician "who made deep contributions to number theory (including creating the field of analytic number theory), and to the theory of Fourier series (...); he is credited with being one of the first mathematicians to give the modern formal definition of a function" (Wikipedia). Ref. Not in Bn-Opale plus, COPAC.