Abstract is: Lothar Collatz (German: [ˈkɔlaʦ]; July 6, 1910 – September 26, 1990) was a German mathematician, born in Arnsberg, Westphalia. The "3x + 1" problem is also known as the Collatz conjecture, named after him and still unsolved. The Collatz–Wielandt formula for the Perron–Frobenius eigenvalue of a positive square matrix was also named after him. Collatz's 1957 paper with Ulrich Sinogowitz, who had been killed in the bombing of Darmstadt in World War II, founded the field of spectral graph theory.
| human | Q5 |
| P268 | Bibliothèque nationale de France ID | 123436663 |
| P5019 | Brockhaus Enzyklopädie online ID | collatz-lothar |
| P8179 | Canadiana Name Authority ID | ncf11160270 |
| P11496 | CiNii Research ID | 1140000791634516480 |
| P8851 | CONOR.SR ID | 53487369 |
| P2456 | DBLP author ID | 97/5703 |
| P7902 | Deutsche Biographie (GND) ID | 118521543 |
| P6394 | ELNET ID | a11531976 |
| P8168 | FactGrid item ID | Q887306 |
| P2163 | FAST ID | 1756822 |
| P646 | Freebase ID | /m/061qkx |
| P9044 | GEPRIS Historisch person ID | 5101845 |
| P227 | GND ID | 118521543 |
| P10879 | Hamburger Professorinnen- und Professorenkatalog ID | 00000769 |
| P269 | IdRef ID | 032399782 |
| P213 | ISNI | 0000000118047155 |
| P10299 | Leopoldina member ID (new) | lothar-collatz |
| P3413 | Leopoldina member ID (superseded) | 3154 |
| P409 | Libraries Australia ID | 35029718 |
| P244 | Library of Congress authority ID | n50029107 |
| P5587 | Libris-URI | xv8cjz1g4clgk0w |
| P1563 | MacTutor biography ID | Collatz |
| P549 | Mathematics Genealogy Project ID | 20676 |
| P4955 | MR Author ID | 50600 |
| P271 | NACSIS-CAT author ID | DA00395656 |
| P8189 | National Library of Israel J9U ID | 987007278796405171 |
| P1368 | National Library of Latvia ID | 000090730 |
| P7699 | National Library of Lithuania ID | LNB:CT7f;=Ba |
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| P349 | NDL Authority ID | 00436365 |
| P691 | NL CR AUT ID | jx20060223003 |
| P1315 | NLA Trove people ID | 802920 |
| P1695 | NLP ID (old) | a0000002125661 |
| P1015 | NORAF ID | 90092990 |
| P1375 | NSK ID | 000121997 |
| P1207 | NUKAT ID | n97017873 |
| P8418 | Oberwolfach mathematician ID | 698 |
| P7293 | PLWABN ID | 9810678385205606 |
| P3065 | RERO ID (obsolete) | 02-A003116203 |
| P1153 | Scopus author ID | 6507461524 |
| P906 | SELIBR ID | 338024 |
| P3987 | SHARE Catalogue author ID | 28366 |
| P3430 | SNAC ARK ID | w6104nst |
| P9621 | Treccani's Enciclopedia della Matematica ID | collatz |
| P11182 | UOM ID | 78014 |
| P214 | VIAF ID | 108257352 |
| P2949 | WikiTree person ID | Collatz-11 |
| P10832 | WorldCat Entities ID | E39PBJptVBG39dbgR9GJkxg9Xd |
| P1556 | zbMATH author ID | collatz.lothar |
| P1026 | academic thesis | Das Differenzenverfahren mit höherer Approximation für lineare Differentialgleichungen | Q111283339 |
| P166 | award received | honorary doctor of the Vienna Technical University | Q75011333 |
| honorary doctor of the University of Augsburg | Q97460897 | ||
| Honorary doctor of the Dresden University of Technology | Q41805943 | ||
| P27 | country of citizenship | Germany | Q183 |
| P1343 | described by source | Obálky knih | Q67311526 |
| P184 | doctoral advisor | Erhard Schmidt | Q61766 |
| Alfred Klose | Q2645286 | ||
| P185 | doctoral student | Werner Uhlmann | Q2562790 |
| Burkhard Monien | Q1016479 | ||
| Frank Natterer | Q1443837 | ||
| Heinz Unger | Q1601086 | ||
| Johann Schröder | Q1696161 | ||
| Klaus Glashoff | Q1745131 | ||
| Karl-Peter Hadeler | Q29640264 | ||
| Ludwig Elsner | Q23062499 | ||
| Werner Krabs | Q28947871 | ||
| Günter Bertram | Q95262355 | ||
| Heinrich Karl Bauersfeld | Q102088448 | ||
| Wolfgang W. E. Wetterling | Q102110477 | ||
| Erich Bohl | Q102110849 | ||
| Bodo Werner | Q102121420 | ||
| Jürgen Sprekels | Q102168259 | ||
| Helmut Krisch | Q102171740 | ||
| Peter Bruns | Q102171777 | ||
| Henning-Peter Henningsen | Q102171884 | ||
| Hans-Heinrich Böther | Q102172885 | ||
| Rita Meyer-Spasche | Q102172895 | ||
| Julius Albrecht | Q102174199 | ||
| Detlef Wurl | Q102174395 | ||
| Reiner Hass | Q102175862 | ||
| Heinrich Voß | Q102177363 | ||
| Jochen Werner | Q102177392 | ||
| Gerhard Opfer | Q102177508 | ||
| Christoph Maas | Q102177687 | ||
| Heinrich Heinzerling | Q102178896 | ||
| Hans Ehrmann | Q102184388 | ||
| Walter Correll | Q102195573 | ||
| Peter J. Koch | Q102201337 | ||
| Helmut Metz | Q102213629 | ||
| Hans H. Gloistehn | Q102213732 | ||
| Alfred-Georg Meyer | Q102214235 | ||
| Harry Feldmann | Q102214243 | ||
| Peter Hempel | Q102214245 | ||
| Rüdiger Nicolovius | Q102214249 | ||
| Elsbeth Bredendiek | Q102214253 | ||
| Ingbert Georg Kupka | Q102214256 | ||
| Bernhard Fleischmann | Q102214260 | ||
| Wilfrid Keller | Q102214265 | ||
| Jürgen Spieß | Q102214269 | ||
| Hein Dietrich Dreves | Q102214274 | ||
| Frank Lempio | Q102214280 | ||
| Henning Flügge | Q102214285 | ||
| Johann Neumann | Q102214289 | ||
| Wolf Hofmann | Q102231285 | ||
| Jörn Glaser | Q102237286 | ||
| Herbert von Dein | Q102237289 | ||
| Detlef Rhenius | Q102238471 | ||
| Klaus Roleff | Q102261359 | ||
| Claus Peter Ortlieb | Q65665528 | ||
| P69 | educated at | Ludwig Maximilian University of Munich | Q55044 |
| University of Göttingen | Q152838 | ||
| University of Greifswald | Q165528 | ||
| Marienstiftsgymnasium | Q1897949 | ||
| Frederick William University Berlin | Q20266330 | ||
| P108 | employer | University of Hamburg | Q156725 |
| Hochschule Hannover | Q224514 | ||
| Karlsruhe University of Applied Sciences | Q761708 | ||
| Frederick William University Berlin | Q20266330 | ||
| P734 | family name | Collatz | Q36911837 |
| Collatz | Q36911837 | ||
| Collatz | Q36911837 | ||
| P101 | field of work | mathematics | Q395 |
| numerical analysis | Q11216 | ||
| functional analysis | Q190549 | ||
| P735 | given name | Lothar | Q16278542 |
| Lothar | Q16278542 | ||
| P1412 | languages spoken, written or signed | German | Q188 |
| P6104 | maintained by WikiProject | WikiProject Mathematics | Q8487137 |
| P463 | member of | Sturmabteilung | Q150793 |
| German Academy of Sciences Leopoldina | Q543804 | ||
| National Socialist German Lecturers League | Q1969308 | ||
| P102 | member of political party | Nazi Party | Q7320 |
| P1559 | name in native language | Lothar Collatz | |
| P800 | notable work | Collatz conjecture | Q837314 |
| Collatz function | Q97367195 | ||
| P106 | occupation | mathematician | Q170790 |
| university teacher | Q1622272 | ||
| P21 | sex or gender | male | Q6581097 |
| Q102214235 | Alfred-Georg Meyer |
| Q102214260 | Bernhard Fleischmann |
| Q102121420 | Bodo Werner |
| Q1016479 | Burkhard Monien |
| Q102177687 | Christoph Maas |
| Q65665528 | Claus Peter Ortlieb |
| Q102238471 | Detlef Rhenius |
| Q102174395 | Detlef Wurl |
| Q102214253 | Elsbeth Bredendiek |
| Q102110849 | Erich Bohl |
| Q102214280 | Frank Lempio |
| Q1443837 | Frank Natterer |
| Q102177508 | Gerhard Opfer |
| Q95262355 | Günter Bertram |
| Q102184388 | Hans Ehrmann |
| Q102213732 | Hans H. Gloistehn |
| Q102172885 | Hans-Heinrich Böther |
| Q102214243 | Harry Feldmann |
| Q102214274 | Hein Dietrich Dreves |
| Q102178896 | Heinrich Heinzerling |
| Q102088448 | Heinrich Karl Bauersfeld |
| Q102177363 | Heinrich Voß |
| Q1601086 | Heinz Unger |
| Q102171740 | Helmut Krisch |
| Q102213629 | Helmut Metz |
| Q102214285 | Henning Flügge |
| Q102171884 | Henning-Peter Henningsen |
| Q102237289 | Herbert von Dein |
| Q102214256 | Ingbert Georg Kupka |
| Q102177392 | Jochen Werner |
| Q102214289 | Johann Neumann |
| Q1696161 | Johann Schröder |
| Q102174199 | Julius Albrecht |
| Q102237286 | Jörn Glaser |
| Q102214269 | Jürgen Spieß |
| Q102168259 | Jürgen Sprekels |
| Q29640264 | Karl-Peter Hadeler |
| Q1745131 | Klaus Glashoff |
| Q102261359 | Klaus Roleff |
| Q23062499 | Ludwig Elsner |
| Q102171777 | Peter Bruns |
| Q102214245 | Peter Hempel |
| Q102201337 | Peter J. Koch |
| Q102175862 | Reiner Hass |
| Q102172895 | Rita Meyer-Spasche |
| Q102214249 | Rüdiger Nicolovius |
| Q102195573 | Walter Correll |
| Q28947871 | Werner Krabs |
| Q2562790 | Werner Uhlmann |
| Q102214265 | Wilfrid Keller |
| Q102231285 | Wolf Hofmann |
| Q102110477 | Wolfgang W. E. Wetterling |
| Q111283339 | Das Differenzenverfahren mit höherer Approximation für lineare Differentialgleichungen |
| Q55883325 | Inclusion theorem for the characteristic numbers of matrices |
| Q837314 | Collatz conjecture | discoverer or inventor | P61 |
| Category:Lothar Collatz | wikimedia | |
| Arabic (ar / Q13955) | لوثار كولاتز | wikipedia |
| Egyptian Arabic (arz / Q29919) | لوثار كولاتز | wikipedia |
| Catalan (ca / Q7026) | Lothar Collatz | wikipedia |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| en-simple | Lothar Collatz | wikipedia |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| לותר קולץ | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| ローター・コラッツ | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Коллатц, Лотар | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Lothar Collatz | wikipedia | |
| Лотар Коллатц | wikipedia | |
| 洛薩·考拉茲 | wikipedia |
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