Theodor Vahlen

Karl Theodor Vahlen

Karl Theodor Vahlen (Vienna, 30 giugno 1869 – Praga, 16 novembre 1945) è stato un matematico austriaco naturalizzato tedesco, maggiormente noto per la sua adesione al partito nazista. Fece parte delle SA e delle SS. In matematica, è noto per i suoi contributi[1] all'algebra geometrica[2]. I suoi lavori vennero riscoperti e ripresentati in una serie di articoli del matematico Lars Ahlfors.

Alcuni lavori

  • (DE) K. Th. Vahlen, Über Bewegungen und complexe Zahlen, vol. 55, 1902, pp. 585–593.
  • Konstruktionen und Approximationen in systematischer Darstellung, Teubner 1911
  • Ballistik de Gruyter, 1922[3] 2nd edn. 1942
  • Deviation und Kompensation, Vieweg 1929
  • Rationale Funktion der Wurzeln, symmetrische und Affektfunktionen, Encyklopädie der mathematischen Wissenschaften, 1–1., 1899
  • Arithmetische Theorie der Formen, Encyklopädie der mathematischen Wissenschaften, Volume 1-2, 1900
  • Abstrakte Geometrie. Untersuchungen über die Grundlagen der euklidischen und nicht-euklidischen Geometrie, Leipzig 1905, 2. edition 1940, Deutsche Mathematik, 2nd supplement
  • Die Paradoxien der relativen Mechanik, Leipzig 1942, Deutsche Mathematik, 3rd supplement

Note

  1. ^ (DE) K. Th. Vahlen, Über Bewegungen und complexe Zahlen, vol. 55, 1902, pp. 585–593.
  2. ^ (EN) E. Artin, Geometric algebra, New York, Interscience, 1957.
  3. ^ Rowe, J. E., Review: Ballistik, by Dr. Theodor Vahlen (PDF), in Bull. Amer. Math. Soc., vol. 29, n. 4, 1923, pp. 186–187, DOI:10.1090/s0002-9904-1923-03703-8.

Altri progetti

Collegamenti esterni

Controllo di autoritàVIAF (EN) 74626864 · ISNI (EN) 0000 0001 0988 3530 · BAV 495/340698 · LCCN (EN) n84805028 · GND (DE) 117325309 · J9U (EN, HE) 987007426352705171 · CONOR.SI (SL) 20531811
  Portale Biografie

Read other articles:

Financial ratio

Numerical value to determine the financial condition of a company Part of a series onAccounting Historical costConstant purchasing powerManagementTax Major typesAuditBudgetCostForensicFinancialFundGovernmentalManagementSocialTax Key conceptsAccounting periodAccrualConstant purchasing powerEconomic entityFair valueGoing concernHistorical costMatching principleMaterialityRevenue recognitionUnit of account Selected accountsAssetsCashCost of goods soldDepreciation / Amortization (busines...

 

LGBT rights in Serbia

You can help expand this article with text translated from the corresponding article in Serbian. (October 2022) Click [show] for important translation instructions. View a machine-translated version of the Serbian article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wik...

 

Grantham, Queensland

Map all coordinates using OpenStreetMap Download coordinates as: KML GPX (all coordinates) GPX (primary coordinates) GPX (secondary coordinates) Town in Queensland, AustraliaGranthamQueenslandGrantham Hotel, located in Anzac AveGranthamCoordinates27°34′37″S 152°12′08″E / 27.5769°S 152.2022°E / -27.5769; 152.2022 (Grantham (town centre))Population634 (2016 census)[1] • Density12.860/km2 (33.31/sq mi)Postcode(s)4347Elevation1...

الاستفتاء الدستوري السوري 2012

الاستفتاء الدستوري السوري 2012 النتائج الأصوات % نعم 7٬490٬319 90٫86% لا 753٬208 9٫14% الأصوات الصحيحة 8٬243٬527 98٫41% الأوراق البيضاء والأصوات المرفوضة 132٬920 1.59% إجمالي الأصوات 8٬376٬447 100.00% المصوتين المسجلين/نسبة المشاركة 14٬589٬954 57.41% جزء من سلسلة مقالات سياسة سورياسوريا الدستور الدستور حقوق...

 

Gene Schroeder

American football player (born 1929) Gene SchroederSchroeder on a 1952 Bowman football cardDate of birth (1929-03-03) March 3, 1929 (age 95)Place of birthWashington, D.C., U.S.[1]Career informationPosition(s)Wide receiverUS collegeVirginiaNFL draft1951 / Round: 1 / Pick 12Career historyAs player1951–1957Chicago Bears Career highlights and awardsPro Bowls1Career statsPlaying stats at NFL.comPlaying stats at DatabaseFootball.com Gene S...

 

Messier 77

Cetus AData pengamatan (J2000 epos)Rasi bintangCetusAsensio rekta 2j 42m 40.7d[1]Deklinasi −00° 00′ 48″[1]Pergeseran merah1137 ± 3 km/detik[1]Jarak47.0 juta tc (14.4 juta pc)[2]Magnitudo semu (V)9.6[1]Ciri-ciriJenis(R)SA(rs)b[1]Ukuran semu (V)7′.1 × 6′.0[1]Ciri-ciri pentingSalah satu galaksi paling terang di katalog Messier. Sudut inklinasi diperkirakan 40°.[2]Penamaan lainCet...

North Philadelphia West

Not to be confused with Northwest Philadelphia. Neighborhood of Philadelphia in Pennsylvania, United StatesNorth Philadelphia WestNeighborhood of PhiladelphiaCountry United StatesStatePennsylvaniaCountyPhiladelphiaCityPhiladelphiaArea code(s)215, 267 and 445 North Philadelphia West is a neighborhood that is located in the western central part of the North Philadelphia section of Philadelphia, Pennsylvania, United States, east of the Schuylkill River. History and notable features North Ph...

 

Live 'n' Kickin' (Kingfish album)

1977 live album by Kingfish Live 'n' Kickin'Live album by KingfishReleased1977Recorded1976VenueThe Roxy, West HollywoodGenreRockLabelJet Records (United Artists)ProducerMatthew Kelly Dave TorbertKingfish chronology Kingfish(1976) Live 'n' Kickin'(1977) Trident(1978) Bob Weir chronology Kingfish(1976) Live 'n' Kickin'(1977) Heaven Help the Fool(1978) Professional ratingsReview scoresSourceRatingAllMusic[1] Live 'n' Kickin' is the second album by the rock group Kingfish. It was reco...

 

This Is Not Happening (TV series)

American TV series or program This Is Not HappeningCreated byAri Shaffir Sam Saifer Eric AbramsPresented byAri Shaffir (seasons 1-3)Roy Wood Jr. (current)Country of originUnited StatesNo. of seasons4No. of episodes46ProductionExecutive producersSam Saifer Ari Shaffir Eric Abrams Jeff TomsicRunning time22 minutesProduction companiesTax Purposes 588! Yo Guys ProductionsOriginal releaseNetworkComedy CentralReleaseJanuary 16, 2015 (2015-01-16) –April 5, 2019 (2019-04-05) This Is...

Філософія

Частина серії проФілософіяLeft to right: Plato, Kant, Nietzsche, Buddha, Confucius, AverroesПлатонКантНіцшеБуддаКонфуційАверроес Філософи Епістемологи Естетики Етики Логіки Метафізики Соціально-політичні філософи Традиції Аналітична Арістотелівська Африканська Близькосхідна іранська Буддій�...

 

Victoria Woodhull

American women's suffrage activist (1838–1927) Victoria WoodhullPhotograph by Mathew Brady, c. 1870BornVictoria California Claflin(1838-09-23)September 23, 1838Homer, Ohio, U.S.DiedJune 9, 1927(1927-06-09) (aged 88)[1]Bredon's Norton, Worcestershire, EnglandOccupationsSuffragistpoliticianfeministwriterKnown forPoliticswomen's rightswomen's suffragefeminismcivil rightsanti-slaverystockbrokerjournalismfree lovePolitical partyEqual RightsSpouses Canning Woodhull ​...

 

New York Red Bulls II

American soccer team Soccer clubNew York Red Bulls IINickname(s)Baby BullsDos TorosFoundedJanuary 21, 2015; 9 years ago (January 21, 2015)[1]StadiumMSU Soccer Park at Pittser FieldCapacity5,000OwnerRed Bull GmbHSporting DirectorDenis HamlettHead coachIbrahim SekagyaLeagueMLS Next Pro20234th, Eastern ConferencePlayoffs: Conference SemifinalsWebsiteClub website Home colors Away colors Current season New York Red Bulls II is an American professional soccer team based in Mont...

Prima Categoria (campionato prime squadre)

Prima CategoriaSport Calcio TipoCampionato CategoriaOdierna Serie A[1] FederazioneFIGC Paese Italia ContinenteEuropa OrganizzatoreFIGCcon delega ai Comitati Regionali per la fase eliminatoria dal 1912 CadenzaAnnuale AperturaAutunno ChiusuraPrimavera PartecipantiDa 5 a 72 FormulaGironi Regionali + Finali Nazionali StoriaFondazione1904 Soppressione1922 Coppa FawcusCoppa SpensleyCoppa BuniCoppa ObertiTrofeo o riconoscimento Modifica dati su Wikidata · Manuale La Prima Categori...

 

Keuskupan Moshi

Artikel ini tidak memiliki referensi atau sumber tepercaya sehingga isinya tidak bisa dipastikan. Tolong bantu perbaiki artikel ini dengan menambahkan referensi yang layak. Tulisan tanpa sumber dapat dipertanyakan dan dihapus sewaktu-waktu.Cari sumber: Keuskupan Moshi – berita · surat kabar · buku · cendekiawan · JSTOR Keuskupan MoshiDioecesis MoshiensisLokasiNegaraTanzaniaMetropolitArushaStatistikLuas5.029 km2 (1.942 sq mi)Populasi...

 

Organ transplantation

Medical procedure in which an organ is removed from one body and placed in the body of a recipient Organ transplantReenactment of the first heart transplant, performed in South AfricaMeSHD016377[edit on Wikidata] Transplant surgeonOccupationNames Physician Surgeon Occupation typeSpecialtyActivity sectorsMedicine, SurgeryDescriptionEducation required Doctor of Medicine (M.D.) Doctor of Osteopathic medicine (D.O.) Bachelor of Medicine, Bachelor of Surgery (M.B.B.S., MBChB) Fields ofemployme...

Indonesia AirAsia Flight 8501

2014 plane crash in the Java Sea Indonesia AirAsia Flight 8501PK-AXC, the aircraft involved in the accident, photographed in April 2014AccidentDate28 December 2014 (2014-12-28)SummaryCrashed into the sea following pilot error; mishandled non-critical failure leading to stallSiteKarimata Strait, Java Sea 3°37′23″S 109°42′43″E / 3.623°S 109.712°E / -3.623; 109.712 (AirAsia Flight 8501 debris field)[a]AircraftAircraft typeAi...

 

英爱条约

此條目没有列出任何参考或来源。 (2014年6月18日)維基百科所有的內容都應該可供查證。请协助補充可靠来源以改善这篇条目。无法查证的內容可能會因為異議提出而被移除。 英愛條約大不列顛和愛爾蘭之間的協議條約《英爱条约》簽字頁簽署日1921年12月6日簽署地點 英國英格蘭倫敦生效日1922年12月6日生效條件建立愛爾蘭自由邦簽署者 愛爾蘭共和國 联合王国語言英語...

 

King's Library

Not to be confused with Charles Ray King. The King's Library tower in the British Library The King's Library gallery, now the Enlightenment Gallery at the British Museum, the former home of the collection. The King's Library was one of the most important collections of books and pamphlets of the Age of Enlightenment.[1] Assembled by George III (r.1760–1820), this scholarly library of over 65,000 volumes was subsequently given to the British nation by his son, George IV. It was hous...

Nhà Lê trung hưng

Đại Việt Tên bản ngữ 大越 1533–1789Bản đồ Đại Việt thời Lê trung hưng thế kỉ 18, gồm cả Đàng Ngoài và Đàng Trong.Thủ đôVạn Lại (tạm thời)(1533–1597)Đông Kinh(1597–1789)Ngôn ngữ thông dụngTiếng Việt trung đạiTôn giáo chínhNho giáo Phật giáo Đạo giáo Công giáo Tín ngưỡng dân gianChính trịChính phủChế độ quân chủHoàng đế • 1533–1548 L...

 

Society for Conservation Biology

Environmental organization Society for Conservation BiologyFoundedMay 8, 1985[1]TypeScientific societyTax ID no. 33-0147824 (U.S.A.)[2]FocusConservation biology, education, policyLocationWashington, D.C., United StatesMembers >4,000[3]Revenue US$2,791,907 (2016)[4]Employees 16[4]Volunteers ~100[4]Websiteconbio.org The Society for Conservation Biology (SCB) is an 501(c)(3) non-profit international professional organization that is dedicated to...