Jakob Nielsen (mathematician) (original) (raw)
جاكوب نيلسن (بالدنماركية: Jakob Nielsen) هو رياضياتي دنماركي، ولد في 15 أكتوبر 1890 في Nordslesvig في الدنمارك، وتوفي في 3 أغسطس 1959 في هيليسينكور في الدنمارك.
| Property | Value |
|---|---|
| dbo:abstract | جاكوب نيلسن (بالدنماركية: Jakob Nielsen) هو رياضياتي دنماركي، ولد في 15 أكتوبر 1890 في Nordslesvig في الدنمارك، وتوفي في 3 أغسطس 1959 في هيليسينكور في الدنمارك. (ar) Jakob Nielsen (Mjels, 15 d'octubre de 1890 - Helsingør, 3 d'agost de 1959) va ser un matemàtic danès. (ca) Jakob Nielsen (* 15. Oktober 1890 in , Alsen; † 3. August 1959 in Helsingør) war ein dänischer Mathematiker, der durch seine Arbeit über Automorphismen von Flächen bekannt wurde. (de) Jakob Nielsen (15 October 1890 in Mjels, Als – 3 August 1959 in Helsingør) was a Danish mathematician known for his work on automorphisms of surfaces. He was born in the village Mjels on the island of Als in North Schleswig, in modern-day Denmark. His mother died when he was 3, and in 1900 he went to live with his aunt and was enrolled in the Realgymnasium. In 1907 he was expelled for membership to an illicit student club. Nevertheless, he matriculated at the University of Kiel in 1908. Nielsen completed his doctoral dissertation in 1913. Soon thereafter, he was drafted into the German Imperial Navy. He was assigned to coastal defense. In 1915 he was sent to Constantinople as a military adviser to the Turkish Government. After the war, in the spring of 1919, Nielsen married Carola von Pieverling, a German medical doctor. In 1920 Nielsen took a position at the Technical University of Breslau. The next year he published a paper in Mathematisk Tidsskrift in which he proved that any subgroup of a finitely generated free group is free. In 1926 Otto Schreier would generalize this result by removing the condition that the free group be finitely generated; this result is now known as the Nielsen–Schreier theorem. Also in 1921 Nielsen moved to the Royal Veterinary and Agricultural University in Copenhagen, where he would stay until 1925, when he moved to the Technical University in Copenhagen. He also proved the Dehn–Nielsen theorem on mapping class groups. Nielsen was a Plenary Speaker of the ICM in 1936 in Oslo. During World War II some efforts were made to bring Nielsen to the United States as it was feared that he would be assaulted by the Nazis. Nielsen would, in fact, stay in Denmark during the war without being harassed by the Nazis. In 1951 Nielsen became professor of mathematics at the University of Copenhagen, taking the position vacated by the death of Harald Bohr. He resigned this position in 1955 because of his international undertakings, in particular with UNESCO, where he served on the executive board from 1952 to 1958. (en) Jakob Nielsen, né le 15 octobre 1890 à Mjels, Als et décédé le 3 août 1959 à Helsingør, est un mathématicien danois, connu pour ses recherches sur les automorphismes des variétés bidimensionnelles. (fr) Jakob Nielsen (Mjels, 15 ottobre 1890 – Helsingør, 3 agosto 1959) è stato un matematico danese. (it) Jakob Nielsen foi um matemático dinamarquês, conhecido por seu trabalho sobre automorfismo de superfícies. (pt) Jakob Nielsen, född 15 oktober 1890, död 3 augusti 1959, var en dansk matematiker. Nielsen blev filosofie doktor i Kiel 1913. Han deltog i första världskriget, blev docent i Hamburg 1919, professor vid tekniska högskolan i Breslau 1920, docent vid Landbohøjskolen i Köpenhamn 1921 samt professor vid Polyteknisk Læreanstalt 1925. Han har författat flera arbeten om gruppteori och topologi. (sv) Якоб Нильсен (Jakob Nielsen; 15 октября 1890, Мьелс, Альс — 3 августа 1959, Хельсингёр) — датский математик, известен своими работами по автоморфизмам поверхностей. (ru) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Jakob_Nielsen.jpg?width=300 |
| dbo:wikiPageExternalLink | https://books.google.com/books%3Fid=RQbvAAAAMAAJ https://books.google.com/books%3Fid=UFKRQwAACAAJ https://books.google.com/books%3Fid=slbl4nU3Xf8C |
| dbo:wikiPageID | 602516 (xsd:integer) |
| dbo:wikiPageLength | 5210 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1114120361 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Royal_Veterinary_and_Agricultural_University dbr:Nielsen_transformation dbr:North_Schleswig dbr:University_of_Copenhagen dbr:University_of_Kiel dbr:Constantinople dbc:People_from_Sønderborg_Municipality dbr:Nielsen_realization_problem dbr:Fenchel–Nielsen_coordinates dbr:Subgroup dbr:Mathematician dbr:Automorphism dbc:1890_births dbc:1959_deaths dbc:20th-century_Danish_mathematicians dbr:UNESCO dbr:Als_(island) dbr:Ottoman_Empire dbr:Harald_Bohr dbr:Helsingør dbr:International_Congress_of_Mathematicians dbr:Technical_University_of_Denmark dbr:Surface_(mathematics) dbr:Free_group dbr:Nazis dbr:World_War_II dbr:Otto_Schreier dbr:Nielsen_theory dbr:Nielsen–Schreier_theorem dbr:Nielsen–Thurston_classification dbr:Technical_University_of_Breslau dbr:Als_Island dbr:Dehn–Nielsen_theorem dbr:File:Jakob_Nielsen.jpg |
| dbp:id | Nielsen_Jakob (en) |
| dbp:title | Jakob Nielsen (en) |
| dbp:wikiPageUsesTemplate | dbt:Authority_control dbt:Citation dbt:MacTutor dbt:Reflist dbt:Short_description dbt:MathGenealogy dbt:Similar_names dbt:MacTutor_Biography |
| dcterms:subject | dbc:People_from_Sønderborg_Municipality dbc:1890_births dbc:1959_deaths dbc:20th-century_Danish_mathematicians |
| schema:sameAs | http://viaf.org/viaf/56674960 |
| rdf:type | owl:Thing yago:CausalAgent100007347 yago:LivingThing100004258 yago:Mathematician110301261 yago:Object100002684 yago:Organism100004475 yago:Person100007846 yago:PhysicalEntity100001930 yago:YagoLegalActor yago:YagoLegalActorGeo yago:Scientist110560637 yago:Whole100003553 yago:Wikicat20th-centuryMathematicians yago:WikicatDanishMathematicians yago:WikicatPeopleFromSønderborgMunicipality |
| rdfs:comment | جاكوب نيلسن (بالدنماركية: Jakob Nielsen) هو رياضياتي دنماركي، ولد في 15 أكتوبر 1890 في Nordslesvig في الدنمارك، وتوفي في 3 أغسطس 1959 في هيليسينكور في الدنمارك. (ar) Jakob Nielsen (Mjels, 15 d'octubre de 1890 - Helsingør, 3 d'agost de 1959) va ser un matemàtic danès. (ca) Jakob Nielsen (* 15. Oktober 1890 in , Alsen; † 3. August 1959 in Helsingør) war ein dänischer Mathematiker, der durch seine Arbeit über Automorphismen von Flächen bekannt wurde. (de) Jakob Nielsen, né le 15 octobre 1890 à Mjels, Als et décédé le 3 août 1959 à Helsingør, est un mathématicien danois, connu pour ses recherches sur les automorphismes des variétés bidimensionnelles. (fr) Jakob Nielsen (Mjels, 15 ottobre 1890 – Helsingør, 3 agosto 1959) è stato un matematico danese. (it) Jakob Nielsen foi um matemático dinamarquês, conhecido por seu trabalho sobre automorfismo de superfícies. (pt) Jakob Nielsen, född 15 oktober 1890, död 3 augusti 1959, var en dansk matematiker. Nielsen blev filosofie doktor i Kiel 1913. Han deltog i första världskriget, blev docent i Hamburg 1919, professor vid tekniska högskolan i Breslau 1920, docent vid Landbohøjskolen i Köpenhamn 1921 samt professor vid Polyteknisk Læreanstalt 1925. Han har författat flera arbeten om gruppteori och topologi. (sv) Якоб Нильсен (Jakob Nielsen; 15 октября 1890, Мьелс, Альс — 3 августа 1959, Хельсингёр) — датский математик, известен своими работами по автоморфизмам поверхностей. (ru) Jakob Nielsen (15 October 1890 in Mjels, Als – 3 August 1959 in Helsingør) was a Danish mathematician known for his work on automorphisms of surfaces. He was born in the village Mjels on the island of Als in North Schleswig, in modern-day Denmark. His mother died when he was 3, and in 1900 he went to live with his aunt and was enrolled in the Realgymnasium. In 1907 he was expelled for membership to an illicit student club. Nevertheless, he matriculated at the University of Kiel in 1908. Nielsen was a Plenary Speaker of the ICM in 1936 in Oslo. (en) |
| rdfs:label | جاكوب نيلسن (أستاذ جامعي) (ar) Jakob Nielsen (matemàtic) (ca) Jakob Nielsen (Mathematiker) (de) Jakob Nielsen (mathématicien) (fr) Jakob Nielsen (mathematician) (en) Jakob Nielsen (matematico) (it) Jakob Nielsen (matemático) (pt) Нильсен, Якоб (математик) (ru) Jakob Nielsen (matematiker) (sv) |
| owl:sameAs | freebase:Jakob Nielsen (mathematician) http://viaf.org/viaf/56674960 http://d-nb.info/gnd/117730459 yago-res:Jakob Nielsen (mathematician) wikidata:Jakob Nielsen (mathematician) dbpedia-ar:Jakob Nielsen (mathematician) dbpedia-ca:Jakob Nielsen (mathematician) dbpedia-da:Jakob Nielsen (mathematician) dbpedia-de:Jakob Nielsen (mathematician) dbpedia-fr:Jakob Nielsen (mathematician) dbpedia-he:Jakob Nielsen (mathematician) dbpedia-it:Jakob Nielsen (mathematician) dbpedia-pt:Jakob Nielsen (mathematician) dbpedia-ru:Jakob Nielsen (mathematician) dbpedia-sv:Jakob Nielsen (mathematician) https://global.dbpedia.org/id/4siqd |
| prov:wasDerivedFrom | wikipedia-en:Jakob_Nielsen_(mathematician)?oldid=1114120361&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Jakob_Nielsen.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Jakob_Nielsen_(mathematician) |
| is dbo:wikiPageDisambiguates of | dbr:Jakob_Nielsen |
| is dbo:wikiPageWikiLink of | dbr:Royal_Veterinary_and_Agricultural_University dbr:Nielsen_transformation dbr:List_of_Danes dbr:University_of_Copenhagen dbr:List_of_group_theory_topics dbr:Jakob_Nielsen dbr:Whitehead's_algorithm dbr:Max_Dehn dbr:Geometric_group_theory dbr:Nielsen_(surname) dbr:Glossary_of_areas_of_mathematics dbr:Fenchel–Nielsen_coordinates dbr:Werner_Fenchel dbr:Diffeomorphism dbr:History_of_group_theory dbr:List_of_International_Congresses_of_Mathematicians_Plenary_and_Invited_Speakers dbr:Symbolic_dynamics dbr:Hyperbolic_geometry dbr:Sønderborg dbr:Teichmüller_space dbr:Mapping_class_group_of_a_surface dbr:Free_group dbr:Nielsen_theory dbr:Nielsen–Schreier_theorem dbr:Steven_Kerckhoff |
| is foaf:primaryTopic of | wikipedia-en:Jakob_Nielsen_(mathematician) |
