Ernest Julius Wilczynski (November 13, 1876 – September 14, 1932) was an American mathematician considered the founder of projective differential geometry. Born in Hamburg, Germany, Wilczynski's family emigrated to America and settled in Chicago, Illinois when he was very young. He attended public school in the US but went to college in Germany and received his PhD from the University of Berlin in 1897. He taught at the University of California until 1907, the University of Illinois from 1907 to 1910, and the University of Chicago from 1910 until illness forced his absence from the classroom in 1923. His doctoral students include Archibald Henderson, Ernest Preston Lane, Pauline Sperry, Ellis Stouffer, and Charles Thompson Sullivan.
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| - Ernest Wilczynski (ca)
- Ernest J. Wilczynski (de)
- Ernest Julius Wilczynski (en)
- Ernest Julius Wilczynski (pt)
- Вильчинский, Эрнест Юлий (ru)
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| - Ernest Wilczynski (Hamburg, 13 de novembre de 1876 - Denver, 14 de setembre de 1932) va ser un matemàtic nord-americà. (ca)
- Ernest Julius Wilczynski (November 13, 1876 – September 14, 1932) was an American mathematician considered the founder of projective differential geometry. Born in Hamburg, Germany, Wilczynski's family emigrated to America and settled in Chicago, Illinois when he was very young. He attended public school in the US but went to college in Germany and received his PhD from the University of Berlin in 1897. He taught at the University of California until 1907, the University of Illinois from 1907 to 1910, and the University of Chicago from 1910 until illness forced his absence from the classroom in 1923. His doctoral students include Archibald Henderson, Ernest Preston Lane, Pauline Sperry, Ellis Stouffer, and Charles Thompson Sullivan. (en)
- Эрнест Юлий (Джулиус) Вильчинский (англ. Ernest Julius Wilczynski); 13 ноября 1876, Гамбург — 14 декабря 1932, Денвер, штат Колорадо) — американский математик, педагог, доктор наук (с 1897), действительный член Национальной Академии наук США (с 1919). (ru)
- Ernest Julius Wilczynski (* 13. November 1876 in Hamburg; † 14. Dezember 1932 in Denver, Colorado) war ein US-amerikanischer Mathematiker. Wilczynski ging in Hamburg und Chicago zur Schule, wohin seine Familie emigrierte. Zum Mathematikstudium ging er an die Universität Berlin, wo er 1897 promoviert wurde (Hydrodynamische Untersuchungen mit Anwendung auf die Theorie der Sonnenrotation). Mathematik hörte er in Berlin bei Lazarus Fuchs, Alfred Pringsheim, Kurt Hensel, Ludwig Schlesinger, Hermann Amandus Schwarz und Physik bei Max Planck. Zurückgekehrt in die USA war er beim Nautical Almanac Office in Washington, D.C. und ab 1898 Instructor an der University of California, Berkeley, wo er 1902 Assistant Professor und 1906 Associate Professor wurde. Von 1903 bis 1905 war er in Europa für die C (de)
- Ernest Julius Wilczynski (Hamburgo, 13 de novembro de 1876 — Denver, 14 de dezembro de 1932) foi um matemático estadunidense. Wilczynski frequentou a escola em Hamburgo e Chicago, para onde sua família imigrou. A fim de estudar matemática foi para a Universidade de Berlim, onde obteve em 1897 um doutorado, com a tese Hydrodynamische Untersuchungen mit Anwendung auf die Theorie der Sonnenrotation. Em Berlim seus professores de matemática foram Lazarus Fuchs, Alfred Pringsheim, Kurt Hensel, Ludwig Schlesinger e Hermann Amandus Schwarz. Em física foi aluno de Max Planck. Retornando aos Estados Unidos trabalhou no Nautical Almanac Office em Washington, D.C.. A partir de 1898 foi instrutor na Universidade da Califórnia em Berkeley, onde tornou-se em 1902 Professor Assistente e em 1906 Professor (pt)
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| - Ernest Wilczynski (Hamburg, 13 de novembre de 1876 - Denver, 14 de setembre de 1932) va ser un matemàtic nord-americà. (ca)
- Ernest Julius Wilczynski (* 13. November 1876 in Hamburg; † 14. Dezember 1932 in Denver, Colorado) war ein US-amerikanischer Mathematiker. Wilczynski ging in Hamburg und Chicago zur Schule, wohin seine Familie emigrierte. Zum Mathematikstudium ging er an die Universität Berlin, wo er 1897 promoviert wurde (Hydrodynamische Untersuchungen mit Anwendung auf die Theorie der Sonnenrotation). Mathematik hörte er in Berlin bei Lazarus Fuchs, Alfred Pringsheim, Kurt Hensel, Ludwig Schlesinger, Hermann Amandus Schwarz und Physik bei Max Planck. Zurückgekehrt in die USA war er beim Nautical Almanac Office in Washington, D.C. und ab 1898 Instructor an der University of California, Berkeley, wo er 1902 Assistant Professor und 1906 Associate Professor wurde. Von 1903 bis 1905 war er in Europa für die Carnegie Institution, unter anderem in Italien, wo er seine spätere Frau (Heirat 1906) traf. 1907 war er an der University of Illinois und 1910 an der University of Chicago, wo er 1914 eine volle Professur erhielt. Seine Gesundheit verschlechterte sich aber, so dass er 1923 seine Vorlesungstätigkeit aufgeben musste. Wilczynski befasste sich zunächst mit theoretischer Astronomie und mit mathematischen Problemen der dabei auftretenden Differentialgleichungen. Bekannt wurde er aber durch die Beschäftigung mit projektiver Differentialgeometrie. Auf diesem Gebiet war er ein Pionier, obwohl es schon vorher Ansätze bei Georges Henri Halphen und Gaston Darboux gab. Auf dem Gebiet war auch Guido Fubini aktiv. Wilczynski knüpfte an Halphen an, der sich aber vor allem mit ebenen und Raum-Kurven befasste, während Wilczynski eine Theorie von Regelflächen entwickelte. 1906 war er Colloquium Lecturer der American Mathematical Society (AMS) (Projective Differential Geometry). Er war Vizepräsident der AMS und ab 1919 Mitglied der National Academy of Sciences. (de)
- Ernest Julius Wilczynski (November 13, 1876 – September 14, 1932) was an American mathematician considered the founder of projective differential geometry. Born in Hamburg, Germany, Wilczynski's family emigrated to America and settled in Chicago, Illinois when he was very young. He attended public school in the US but went to college in Germany and received his PhD from the University of Berlin in 1897. He taught at the University of California until 1907, the University of Illinois from 1907 to 1910, and the University of Chicago from 1910 until illness forced his absence from the classroom in 1923. His doctoral students include Archibald Henderson, Ernest Preston Lane, Pauline Sperry, Ellis Stouffer, and Charles Thompson Sullivan. (en)
- Ernest Julius Wilczynski (Hamburgo, 13 de novembro de 1876 — Denver, 14 de dezembro de 1932) foi um matemático estadunidense. Wilczynski frequentou a escola em Hamburgo e Chicago, para onde sua família imigrou. A fim de estudar matemática foi para a Universidade de Berlim, onde obteve em 1897 um doutorado, com a tese Hydrodynamische Untersuchungen mit Anwendung auf die Theorie der Sonnenrotation. Em Berlim seus professores de matemática foram Lazarus Fuchs, Alfred Pringsheim, Kurt Hensel, Ludwig Schlesinger e Hermann Amandus Schwarz. Em física foi aluno de Max Planck. Retornando aos Estados Unidos trabalhou no Nautical Almanac Office em Washington, D.C.. A partir de 1898 foi instrutor na Universidade da Califórnia em Berkeley, onde tornou-se em 1902 Professor Assistente e em 1906 Professor Associado. De 1903 a 1905 esteve na Europa a cargo da Carnegie Institution for Science, dentre outros países na Itália, onde conheceu a mulher com quem casou em 1906. Em 1907 foi professor da Universidade de Illinois e em 1910 da Universidade de Chicago, onde em 1914 foi Professor Pleno. Seu estado de saúde complicou-se, e em 1923 teve de abandonar sua atividade de professor. Em 1906 foi Colloquium Lecturer da American Mathematical Society (AMS) (Projective Differential Geometry). Foi vice-presidente da AMS e a partir de 1919 membro da Academia Nacional de Ciências dos Estados Unidos. Foi palestrante convidado do Congresso Internacional de Matemáticos em Heidelberg (1904: The general projective theory of space curves and ruled surfaces). (pt)
- Эрнест Юлий (Джулиус) Вильчинский (англ. Ernest Julius Wilczynski); 13 ноября 1876, Гамбург — 14 декабря 1932, Денвер, штат Колорадо) — американский математик, педагог, доктор наук (с 1897), действительный член Национальной Академии наук США (с 1919). (ru)
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