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OHM, Martin. *Die Lehre vom Grössten und Kleinstern mit einer Einleitung und einem Anhanger … aus der Differential- und Integral-Rechnung …*, Berlin (T. H. Riemann) 1825. In-8°, marbled covers, gilt spine with orange title label, xviii + 330 pp., yellow edges, text in very clean condition. One of the many publications by the younger brother of Georg Ohm, the formulator of the law that bears his name. Martin Ohm (1792–1872) was a professor at Friedrich Wilhelm University in Berlin. With this work on the calculus of variations and the theory of maxima and minima, he surpassed all previous publications on the subject. (Todhunter, No. 96, pp. 30–36). Provenance: the library of Hans and Oscar BOLZA, then passed down through the family.
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