MATHEMATICIAN

Poul Heegaard

1871 - 1948

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Poul Heegaard (Danish: [ˈhe̝ˀˌkɒˀ] ; November 2, 1871, Copenhagen - February 7, 1948, Oslo) was a Danish mathematician active in the field of topology. His 1898 thesis introduced a concept now called the Heegaard splitting of a 3-manifold. Heegaard's ideas allowed him to make a careful critique of work of Henri Poincaré. Poincaré had overlooked the possibility of the appearance of torsion in the homology groups of a space. Read more on Wikipedia

His biography is available in different languages on Wikipedia. Poul Heegaard is the 934th most popular mathematician (down from 891st in 2019), the 650th most popular biography from Denmark (down from 611th in 2019) and the 8th most popular Danish Mathematician.

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Among MATHEMATICIANS

Among mathematicians, Poul Heegaard ranks 934 out of 1,004. Before him are Henry Thomas Colebrooke, Barry Mazur, Béla Bollobás, Carl Pomerance, Antoni Zygmund, and Yakov Eliashberg. After him are Nicolaas Govert de Bruijn, Krystyna Kuperberg, Nikolai Durov, Peter Sarnak, Christopher Zeeman, and W. T. Tutte.

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Contemporaries

Among people born in 1871, Poul Heegaard ranks 170. Before him are Ivan Gubkin, Winston Churchill, Clarence Hudson White, Jean-Baptiste Mimiague, Arthur Surridge Hunt, and Thalia Flora-Karavia. After him are Henry Stephenson, Edmund Breese, John Langalibalele Dube, Newton D. Baker, James Weldon Johnson, and Marion Mahony Griffin. Among people deceased in 1948, Poul Heegaard ranks 188. Before him are Arthur Whitten Brown, Franz Weidenreich, Frank Benford, Susan Glaspell, Edgar Kennedy, and James Young. After him are Warren William, Mary Eaton, Sophia Duleep Singh, Samuel S. Hinds, Gertrude Atherton, and Mary Nolan.

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In Denmark

Among people born in Denmark, Poul Heegaard ranks 650 out of 1,032. Before him are Mads Pedersen (1995), Connie Hedegaard (1960), Kai Winding (1922), Thomas Christiansen (1973), Troels Rasmussen (1961), and Nikolaj Arcel (1972). After him are Lars Elstrup (1963), Finn Pedersen (1925), DQ (1973), Princess Nathalie of Sayn-Wittgenstein-Berleburg (1975), Lars Høgh (1959), and John Tchicai (1936).

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Among MATHEMATICIANS In Denmark

Among mathematicians born in Denmark, Poul Heegaard ranks 8. Before him are Piet Hein (1905), Georg Mohr (1640), Johan Jensen (1859), Agner Krarup Erlang (1878), Julius Petersen (1839), and Jørgen Pedersen Gram (1850).

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