19th-century mathematicians

Victor Schlegel (1843–1905) was a German mathematician.

Christian Heinrich von Nagel (28 February 1803 in Stuttgart, Germany – 27 October 1882 in Ulm, Germany) was a German geometer.

Camille-Christophe Gerono (1799 in Paris, France – 1891 in Paris) was a French mathematician.

Carl Culmann (10 July 1821 – 9 December 1881) was a German structural engineer.

Peter Ludwig Mejdell Sylow (IPA: [ ˈsyːlɔv]) (12 December 1832 – 7 September 1918) was a Norwegianmathematician who proved foundational results in group theory.

Pierre Alphonse Laurent (18 July 1813 – 2 September 1854) was a French mathematician and Military Officer best known as the discoverer of the Laurent series, an expansion of a function into an infinite power series, generalizing the Taylor series expansion.

Pierre Laurent Wantzel (5 June 1814 in Paris – 21 May 1848 in Paris) was a French mathematician who proved that several ancient geometric problems were impossible to solve using only compass and straightedge.

Raoul Bricard (23 March 1870 – 1944) is a French engineer and a mathematician.

Johann Georg Rosenhain (10 June 1816 in Königsberg – 14 March 1887 Berlin) was a German mathematician who introduced theta characteristics.

Radhanath Sikdar (1813 – 17 May 1870) was an Bengali (Indian) mathematician who, among many other things, calculated the height of Mount Everest in the Himalaya and showed it to be the tallest mountain above sea level.

Pierre François Verhulst (28 October 1804, Brussels – 15 February 1849, Brussels) was a mathematician and a doctor in number theory from the University of Ghent in 1825.

François-Napoléon-Marie Moigno, known in his later life as the Abbé Moigno, (15 April 1804 – 14 July 1884) was a French Catholic priest and one time Jesuit, as well as a physicist and author.

The Blessed Francesco Faà di Bruno (29 March 1825 – 27 March 1888) was an Italian priest and advocate of the poor, a leading mathematician of his era and a noted religious musician.

Rehuel Lobatto (June 6, 1797 – February 9, 1866) was a Dutch mathematician.

Francisco Gomes Teixeira (28 January 1851, São Cosmado, Armamar – 8 February 1933, Porto) was a Portuguese mathematician and historian of mathematics.

Károly Hadaly (1743, Gúta, currently Kolárovo – 1834, Budapest) was a Hungarian mathematician.

Christian Sophus Juel (25 January 1855, Randers – 24 January 1935, Copenhagen) was a Danish mathematician, specializing in geometry.

Jakob Amsler-Laffon (11 November 1823 – 3 January 1912) was a mathematician, physicist, engineer and the founder of his own factory.

Li Shanlan (李善蘭, courtesy name: Renshu 壬叔, art name: Qiuren 秋紉) (1810 – 1882) was a Chinese mathematician of the Qing Dynasty.

Eduard Weyr (June 22, 1852 – July 23, 1903) was a Czech mathematician now chiefly remembered as the discoverer of a certain canonical form for square matrices over algebraically closed fields.

Li Rui (Chinese: 李锐; pinyin: Lǐ Ruì; 8 December 1768 Suzhou – 30 June 1817 Suzhou) was a Chinese mathematician.

Pieter Hendrik Schoute (21 January 1846, Wormerveer – 18 April 1923, Groningen) was a Dutch mathematician known for his work on regular polytopes and Euclidean geometry.

Alicia Boole Stott (June 8, 1860 – December 17, 1940) was an Irish-English mathematician.

Anders Wiman (11 February 1865 – 13 August 1959) was a Swedish mathematician.

Alfréd Haar (Hungarian: Haar Alfréd; 11 October 1885, Budapest – 16 March 1933, Szeged) was a Hungarian mathematician.

Jur Hronec (May 17, 1881 – December 1, 1959) was a Slovak mathematician.

Albert Victor Bäcklund (January 11, 1845 – February 23, 1922) was a Swedish mathematician and physicist.

Georgios Remoundos (Γεώργιος Ρεμούνδος, 1878 in Athens – 27 April 1928) was a Greek mathematician and a founding member of the Academy of Athens in 1926.

Ernst Kötter was a German mathematician who graduated in 1884 from Berlin University.

Ivar Otto Bendixson (August 1, 1861 – November 29, 1935) was a Swedish mathematician.

Niels Nielsen (2 December 1865, in Ørslev – 16 September 1931, in Copenhagen) was a Danish mathematician who specialized in mathematical analysis.

Julius Peter Christian Petersen (16 June 1839, Sorø, West Zealand – 5 August 1910, Copenhagen) was a Danish mathematician.

Hans Frederick Blichfeldt (9 January 1873 in Illar, Denmark – 16 November 1945 in Palo Alto, California) was a Danish and American mathematician who worked on group theory and the geometry of numbers.

William Elwood Byerly (13 December 1849 – 20 December 1935) was an American mathematician at Harvard University where he was the "Perkins Professor of Mathematics".

Franz Josef Hočevar, in Slovenian, Franc Jože Hočevar, (born in Metlika, Slovenia, October 10, 1853, died Graz, Austria June 19, 1919) was an Austrian–Slovenian mathematician and author of mathematical books.

Josip Plemelj (December 11, 1873 – May 22, 1967) was a Slovene mathematician, whose main contributions were to the theory of analytic functions and the application of integral equations to potential theory.

C. V. Mourey (1791? – 1830?) was a French mathematician who wrote a work of 100 pages titled La vraie théorie des quantités négatives et des quantités prétendues imaginaires (The true theory of negative quantities and of alleged imaginary quantities), published in Paris in 1828 and reedited in 1861, in which he studied systematically the vector theory.

Vladimir Varićak (sometimes also spelled Vladimir Varičak; March 1, 1865, Otočac – January 17, 1942, Zagreb) was a Croatian mathematician and theoretical physicist.

Théodore Olivier (1793–1853) was a French mathematician.

Jørgen Pedersen Gram (27 June 1850 – 29 April 1916) was a Danish actuary and mathematician who was born in Nustrup, Duchy of Schleswig, Denmark and died in Copenhagen, Denmark.

Barnabé Brisson (11 October 1777 – 25 September 1828) was a French engineer and mathematician.

David Bierens de Haan (3 May 1822, Amsterdam – 12 August 1895, Leiden) was a Dutch mathematician and historian of science.

Felix Bernstein (24 February 1878, Halle, Germany – 3 December 1956, Zurich, Switzerland), was a German Jewish mathematician known for proving the Schröder–Bernstein theorem central in set theory in 1896, and less well known for demonstrating the correct blood group inheritance pattern of multiple alleles at one locus in 1924 through statistical analysis.

Gustav Ritter von Escherich (1 June 1849 – 28 January 1935) was an Austrian mathematician.

Hermann Rothe (December 28, 1882 in Vienna – December 18, 1923 in Vienna) was an Austrian mathematician.

Jakob Philipp Kulik (1793–1863) was an Austrian mathematician known for his construction of a massive factor tables.

Björn Gunnlaugsson (25 September 1788 – 17 March 1876) was an Icelandic mathematician and cartographer.

David ben Meir Cohen Friesenhausen (1756–1828) was a German-Hungarian astronomer, maskil, mathematician, and rabbi.

Emanuel Czuber (Prague, 19 January 1851 – Gnigl, 22 August 1925) was an Austrian mathematician.

Joseph Jean Baptiste Neuberg (30 October 1840 – 22 March 1926) was a Luxembourger mathematician who worked primarily in geometry.

Constantin Marie Le Paige (9 March 1852 – 26 January 1929) was a Belgian mathematician.

Ignatius Carbonnelle (1829 – 1889 was a Jesuit, mathematician and the founder of the Scientific Society of Brussels.

Gyula Kőnig (16 December 1849 – 8 April 1913) was a Hungarian mathematician.

Alexander McAulay (9 December 1863 – 6 July 1931) was the first professor of mathematics and physics at the University of Tasmania, Hobart, Tasmania.

Charles Jasper Joly (27 June 1864 – 4 January 1906) was an Irish mathematician and astronomer who became Royal Astronomer of Ireland.

Ioan Mire Melik, or Melic (born Iacob Ioan Miren Melik; August 9, 1840 – January 29, 1889), was a Wallachian, later Romanian mathematician, educator and political figure, one of the early members of Junimea literary society.