MATHEMATICIAN

Carl Gustav Axel Harnack

1851 - 1888

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Carl Gustav Axel Harnack (7 May [O.S. 25 April] 1851, Dorpat (now Tartu) – 3 April 1888, Dresden) was a Baltic German mathematician who contributed to potential theory. Harnack's inequality applied to harmonic functions. He also worked on the real algebraic geometry of plane curves, proving Harnack's curve theorem for real plane algebraic curves. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Carl Gustav Axel Harnack is the 734th most popular mathematician (up from 828th in 2019), the 146th most popular biography from Estonia (up from 176th in 2019) and the 2nd most popular Estonian Mathematician.

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Among MATHEMATICIANS

Among mathematicians, Carl Gustav Axel Harnack ranks 734 out of 1,004. Before him are Moritz Pasch, Otto Toeplitz, William Hopkins, Yuri Matiyasevich, Thomas Digges, and Eliyahu Rips. After him are Antanas Mockus, Albert W. Tucker, Georges de Rham, Nicolas Fuss, Vera T. Sós, and Wilhelm Killing.

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Contemporaries

Among people born in 1851, Carl Gustav Axel Harnack ranks 83. Before him are Edward Robert Hughes, Ernst Hartwig, Arnold Pick, Gérard Leman, Ekaterine Gabashvili, and Nikolai Iudovich Ivanov. After him are Carl Locher, Bedros Tourian, Spyridon Lambros, Andrea Costa, Spiru Haret, and Thérèse Schwartze. Among people deceased in 1888, Carl Gustav Axel Harnack ranks 70. Before him are Princess Marie Frederica of Hesse-Kassel, Anna Kingsford, Hippolyte Carnot, Francesco Faà di Bruno, François Perrier, and Barghash bin Said of Zanzibar. After him are Jules d'Anethan, Alessandro Antonelli, Amos Bronson Alcott, Arsène Darmesteter, Henry James Sumner Maine, and Yuriy Fedkovych.

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In Estonia

Among people born in Estonia, Carl Gustav Axel Harnack ranks 146 out of 351. Before him are Jüri Ratas (1978), Alfons Rebane (1908), Harald Tammer (1899), Joann Lõssov (1921), Voldemar Väli (1903), and Aleksey Shakhmatov (1864). After him are Heino Kruus (1926), Jaan Talts (1944), Uku Masing (1909), Vladas Mikėnas (1910), Mart Helme (1949), and Ilmar Kullam (1922).

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Among MATHEMATICIANS In Estonia

Among mathematicians born in Estonia, Carl Gustav Axel Harnack ranks 2. Before him are Erhard Schmidt (1876). After him are Hellmuth Kneser (1898).

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