1. Freudenthal Hans Freudenthal. Hans Freudenthal was born into a Jewish family, a fact whichwould have unfortunate consequences for him during World War II. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Freudenthal.html

Hans Freudenthal Born: 17 Sept 1905 in Luckenwalde, Germany Died: 13 Oct 1990 in Utrecht, The Netherlands Click the picture above to see a larger version Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Hans Freudenthal was born into a Jewish family, a fact which would have unfortunate consequences for him during World War II. He was educated in Luckenwalde, the town of his birth, where he studied at the Gymnasium. Although he developed an interest in mathematics and science at this stage, he was also interested in literature and read widely from the classics of literature and poetry. In 1923 he entered the University of Berlin to study mathematics and physics. Two important events took place in 1927 which would influence the direction of his career. Brouwer lectured in Berlin in that year and the meeting between Freudenthal and Brouwer would lead to Freudenthal's career being entirely in The Netherlands. Also in 1927, Freudenthal spent the summer semester at the University of Paris broadening his already broad interests. At the University of Berlin his doctoral supervisor was Hopf and in 1931 Freudenthal was awarded his doctorate for a thesis on the theory of ends of groups By the time he was awarded his doctorate, Freudenthal was already in Amsterdam having been invited to go there in 1930 as

2. Recherche : Auteur freudenthal hans , Certification IDDN.Dans les fiches. 1 fiche trouvée. http://publimath.irem.univ-mrs.fr/cgi-bin/publimath.pl?r=auteur=Freudenthal Hans

3. Publimath : Liste Auteurs F freudenthal hans; Freysz Sylvie; FriedelmeyerJean-Pierre; Friry André; Fritsch Corinne; Froger Simon; Fromentin http://publimath.irem.univ-mrs.fr/autF.htm

Liste Auteurs F A B C D ... Fumet Edith

4. Recherche : Auteur freudenthal hans , Certification IDDN. Dansles fiches. 1 fiche trouvée 1984 Bulletin de l APMEP. http://publimath.univ-lyon1.fr/cgi-bin/publimath.pl?r=auteur=Freudenthal Hans

5. CDbox, Il Sito Musicale Dove Ascoltare E Acquistare Cd Online Translate this page di freudenthal hans. Prezzo di Listino Euro 99,06 Prezzo CDBox Euro 99,11. difreudenthal hans. Prezzo di Listino Euro 224,25 Prezzo CDBox Euro 224,30. http://www.cdbox.it/cdbook/sottocategorie_book.asp?zona=book&idsottocat=SCI06300

6. Galleri Bergström - Tidigare Utställningar Johan Bolin Olle Bonniér Aschen Brenner Corneille Peter Dahl Erik Ditman Anna EhrnerKjell Engman Lars Erik Falk Peter freudenthal hans Frode Agneta Freccero http://www.galleribergstrom.com/tidigare.html

Henrik Allert Kjell Andersson Alain Berckvits Ernst Billgren Ann Blom Johan Bolin Olle Bonniér Aschen Brenner Corneille Peter Dahl Erik Ditman Anna Ehrner Kjell Engman Lars Erik Falk Peter Freudenthal Hans Frode Agneta Freccero Carl Magnus Bodil Hedlund Sam Francis ... HUNDRATALS BILDER

7. Re: Euclid And Quadratics By Julio Gonzalez Cabillon the link between solving equations and Elements II5 and VI28? A interesting andsharp article around your question may be found in freudenthal hans What is http://mathforum.org/epigone/math-history-list/hootwumta/1.5.4.32.19961126021642

Re: Euclid and Quadratics by Julio Gonzalez Cabillon reply to this message post a message on a new topic Back to messages on this topic Back to math-history-list Subject: Re: Euclid and Quadratics Author: jgc@adinet.com.uy Date: The Math Forum

8. References For Freudenthal References for hans freudenthal. Books L Streefland (ed.), The legacyof hans freudenthal (Dordrecht, 1993). Articles J Adda, Une http://www-gap.dcs.st-and.ac.uk/~history/References/Freudenthal.html

References for Hans Freudenthal Books: L Streefland (ed.), The legacy of Hans Freudenthal (Dordrecht, 1993). Articles: The legacy of Hans Freudenthal (Dordrecht, 1993), 9-19. H J M Bos, In memoriam : Hans Freudenthal (1905-1990), Historia Math. H J M Bos, "The bond with reality is cut" - Freudenthal on the foundations of geometry around 1900, in The legacy of Hans Freudenthal (Dordrecht, 1993), 51-58. Hans Freudenthal, Papers dedicated to the memory of Hans Freudenthal (Dutch), Nieuw Arch. Wisk. (2) (1991), i-iv; 129-212. J P Hogendijk, In memoriam : Hans Freudenthal (1905-1990), Arch. Internat. Hist. Sci. A F Monna, Supplementary note: "Werner Fenchel and Hans Freudenthal", Nieuw Arch. Wisk. A F Monna, Werner Fenchel and Hans Freudenthal, Nieuw Arch. Wisk. K Strambach and F D Veldkamp, In memoriam Hans Freudenthal, Geom. Dedicata L Streefland, Editorial : the legacy of Freudenthal, in The legacy of Hans Freudenthal (Dordrecht, 1993) 1-7. D van Dalen, Freudenthal and the foundations of mathematics, Nieuw Arch. Wisk.

9. AIM Reprint Library: Listing for freudenthal, hans. Viewing Page 110 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 91-98 NEXT . freudenthal, hans. http://www.aimath.org/library/library.cgi?database=reprints;mode=display;BrowseT

10. AIM Reprint Library: Translate this page Freeds, D. Freeman, DA Freeman, John M. Freeman, Michael Freese, Ralph Freiberger,W. Freidman, Harvey Freiman, G. Frenkiel, N. freudenthal, hans Freund, Peter http://www.aimath.org/library/library.cgi?database=reprints;mode=display;BrowseL

11. Portret Van Hans Freudenthal Prof. Dr. hans freudenthal (1905 1990). hans freudenthal was born in1905 in the German town of Luckenwalde, the son of a Jewish teacher. http://www.fi.uu.nl/en/freudenthal.html

Prof. Dr. Hans Freudenthal (1905 - 1990) Hans Freudenthal was born in 1905 in the German town of Luckenwalde, the son of a Jewish teacher. Even at a young age he was interested in differential equations and integration, but by the age of 13 he had also read all the works of Goethe and Schiller. In 1923 he went to Berlin and Paris to study mathematics. After gaining his doctorate he moved to Amsterdam, in the Netherlands, where he became assistant to L.E.J. Brouwer, the famous mathematician, in 1930. Shortly after, he married Suus Lutter, who was a pedagogue. Thanks to his marriage to an Arian Dutch woman and a certain amount of luck, Freudenthal was able to survive the Second World War. In 1946 Freudenthal became a professor in Utrecht, appointed to a chair in pure and applied mathematics and the principles of mathematics. In his time Freudenthal was an accomplished and well-known mathematician, and he made substantial contributions to topology, geometry and the theory of Lie groups. As a teacher he acquired international fame and significance as the founder of realistic mathematics education, which is based on problems taken from day-to-day experiences rather than on abstract math rules. Single-handedly Freudenthal saved Dutch education from the American teaching method of New Math, which was introduced in many countries from 1960 onwards. This formal, logic-based method turned out to be unsuitable for most students.

12. Portret Van Hans Freudenthal Prof. Dr. hans freudenthal (1905 1990). hans freudenthal werd in 1905geboren te Luckenwalde in Duitsland als zoon van een Joodse leraar. http://www.fi.uu.nl/nl/freudenthal.html

Prof. Dr. Hans Freudenthal (1905 - 1990) Hans Freudenthal werd in 1905 geboren te Luckenwalde in Duitsland als zoon van een Joodse leraar. Van jongsaf aan werd hij gegrepen door wiskundige fenomenen als differentiaalvergelijkingen en integratie. Op dertienjarige leeftijd had hij alle werken van Goethe en Schiller gelezen. Vanaf 1923 studeerde hij wiskunde in Berlijn en Parijs. Na het behalen van zijn doctoraal examen verhuisde hij naar Amsterdam waar hij de beroemde wiskundige L.E.J. Brouwer in 1930 assisteerde. Kort daarna trouwde hij Suus Lutter, een pedagoge. Dankzij dit huwelijk (en een portie geluk), wist Freudenthal de Tweede Wereldoorlog te overleven. Vanaf 1946 bezette Freudenthal als professor de stoel 'theoretische en toegepaste wiskunde' in Utrecht. Hiermee vestigde hij zich definitief als bekend wiskundige, waarbij hij wezenlijke (wetenschappelijke) bijdragen leverde aan de topologie, geometrie en de 'theorie van Lie' groepen. Als onderwijzer verwierf hij internationale faam en erkenning als de oprichter van de toegepaste (realistische) wiskunde die gebaseerd is op alledaagse problemen in plaats van de (tot dan toe) gebruikelijke abstracte wiskunde. Door zijn invloed voorkwam Freudenthal dat het Nederlandse onderwijs de Amerikaanse 'New Math' methoden adopteerde - wat in veel andere landen wel gebeurde vanaf 1960. Deze formele methode, grotendeels gebaseerd op abstracte logica, bleek later ongeschikt voor de meerderheid van de studenten.

13. LINCOS - Freudenthal AUTHOR freudenthal, hans TITLE Lincos; design of a language for cosmic intercourse.LANGUAGE ENGLISH PUBLISHED Amsterdam, NorthHolland Pub. http://www.ai.mit.edu/people/paulfitz/cosmic.html

AUTHOR : Freudenthal, Hans TITLE : Lincos; design of a language for cosmic intercourse. LANGUAGE : ENGLISH PUBLISHED : Amsterdam, North-Holland Pub. Co., 1960- PHYSICAL DESC : v. 23 cm. SERIES : Studies in logic and the foundations of mathematics; SUBJECT : Lincos (Artificial language) It's a familiar problem. You've finally managed to contact that alien civilization. Things are going great. You feel like your world will never be the same, that whole new realms of possibilities are opening up before your eyes. Then, inevitably, a hint of strain starts to creep into your relationship. You find that you don't really have all that much in common. Heck, sometimes it feels like you're not even in the same galaxy. It's as if there is this vast gulf between you, making communication almost impossible. You're not even sure you'd understand each other no matter how physically close you become. What do you do? You design a language for cosmic intercourse. Hans Freudenthal made a start at one in his book, Lincos, published in 1960. I think it's time for version II, the all-new action-packed sequel guaranteed to have you on the edge of your seat, which is a specific structure with a flat surface perpendicular to the pull of gravity, which is a thing that, oh never mind. (verbose human-readable source for message

14. CosmicOS - Paul Fitzpatrick References. AUTHOR freudenthal, hans TITLE Lincos; design of a language for cosmicintercourse. LANGUAGE ENGLISH PUBLISHED Amsterdam, NorthHolland Pub. http://www.ai.mit.edu/people/paulfitz/cosmicos.shtml

outline goals status downloads ... references (skip to: verbose human-readable source for message, version information Outline of CosmicOS It's a familiar problem. You've finally managed to contact that alien civilization. Things are going great. You feel like your world will never be the same, that whole new realms of possibilities are opening up before your eyes. Then, inevitably, a hint of strain starts to creep into your relationship. You find that you don't really have all that much in common. Heck, sometimes it feels like you're not even in the same galaxy. It's as if there is this vast gulf between you, making communication almost impossible. You're not even sure you'd understand each other no matter how physically close you become. What do you do? You design a language for cosmic intercourse. Hans Freudenthal made a start at one in his book, Lincos, published in 1960. I think it's time for version II, the all-new action-packed sequel guaranteed to have you on the edge of your seat, which is a specific structure with a flat surface perpendicular to the pull of gravity, which is a thing that, oh never mind. Goals of CosmicOS To create a complete message which, if noticed by a non-human intelligence, stands some chance of being understood. The message should introduce the intelligence to a significant portion of the human world view.

15. Résultats De La Recherche Translate this page Auteur freudenthal, hans (1 articles) freudenthal, hans Sur un théorèmetopologique de M. Van Dantzig. Bulletin de la Société http://www.numdam.org/numdam-bin/recherche?h=aur&aur=Freudenthal, Hans&format=sh

16. Bulletin De La Société Mathématique De France Tome 75 (1947) Translate this page freudenthal, hans Sur un théorème topologique de M. Van Dantzig p. 56-62Texte intégral djvu pdf Analyses MR 10,260e Zbl 0034.10901 http://www.numdam.org/numdam-bin/feuilleter?id=BSMF_1947__75_

17. Freudent Biografie van freudenthal, hans. freudenthal, hans (19051990). freudenthal, hans, wiskundige (Luckenwalde (Duitsland) 17-9- 1905 - Utrecht 13-10- 1990) . http://www.inghist.nl/Onderzoek/Projecten/BWN/lemmata/bwn5/freudent

HOME REACTIE SITEMAP HULP ... VERWIJZINGEN PROJECTMENU Home nieuwe biografieën log in Biografie van Freudenthal, Hans Onderzoek Projecten Biografisch Woordenboek van Nederland freudent Biografisch Woordenboek van Nederland . URL:http://www.inghist.nl/Onderzoek/Projecten/BWN/lemmata/bwn5/freudent [05-09-2003] FREUDENTHAL, Hans (1905-1990) Freudenthal, Hans , wiskundige (Luckenwalde (Duitsland) 17-9- 1905 - Utrecht 13-10- 1990) . Zoon van Joseph Freudenthal, godsdienstleraar, en Elsbeth Ehmann. Gehuwd op 20-7-1932 met Susanna Johanna Catharina Lutter (1908-1986). Uit dit huwelijk werden 3 zoons en 1 dochter geboren. Bij Wet Staatsblad nr. I-213) genaturaliseerd tot Nederlander. In 1929 schreef Freudenthal zijn wiskundig proefschrift (Gepubliceerd in: Mathematisches Zeitschrift (1931) 692-713), waarop hij op 20 februari 1930 promoveerde. Een half jaar later nodigde Brouwer Freudenthal in een brief uit om in Amsterdam zijn assistent te worden. Hij accepteerde het - ook financieel aantrekkelijke - aanbod en vertrok op 15 november naar Amsterdam. Ondanks het 'gemengde' huwelijk liet de bezetter het gezin niet ongemoeid. Freudenthal werd in mei 1944 bij een medische keuring ondanks zijn astma onverwacht goedgekeurd en tewerkgesteld op het in aanbouw zijnde vliegveld Havelte. Hij wist op 5 september te ontsnappen en naar Amsterdam terug te reizen, waar hij tot het einde van de bezetting thuis ondergedoken bleef.

18. Citation For The 2003 ICMI Freudenthal Medal To Celia Hoyles Translate this page Commission Internationale de l’Enseignement Mathématique. Médaillehans freudenthal 2003. La première médaille hans freudenthal http://www.ardm.asso.fr/Hoylescitationfr.htm

English Version Commission Internationale de l’Enseignement Mathématique Médaille Hans Freudenthal 2003 La première médaille Hans Freudenthal attribuée par la Commission Internationale de l’Enseignement Mathématique est décernée au professeur Celia Hoyles . Cette distinction récompense la contribution essentielle que Celia Hoyles a apportée à la recherche concernant les nouvelles technologies en didactique des mathématiques, tant sur un plan théorique qu’à travers le développement et le pilotage de projets nationaux et internationaux dans ce domaine, ayant pour but d’améliorer grâce à la technologie l’éducation mathématique des individus, des jeunes enfants aux adultes en situation de travail. Celia Hoyles a étudié les mathématiques à l’université de Manchester, y obtenant le prix Dalton récompensant le meilleur étudiant en mathématiques. Elle a commencé sa carrière comme professeur dans l’enseignement secondaire, avant de devenir assistante à l’Institut Polytechnique de North London. Après avoir obtenu un Master et un Doctorat en Education Mathématique, elle est devenue professeur à l’Institut d’éducation de l’Université de Londres en 1984. Ses premiers travaux didactiques dans le domaine de la technologies, comme ceux de nombreux chercheurs, ont étudié le potentiel de Logo pour l’apprentissage des mathématiques, et elle est rapidement devenu un chercheur de premier plan dans ce domaine. Un premier livre, publié en 1986, puis un second, édité en 1986, attestent de la productivité de cette recherche sur Logo. Ces travaux furent suivis, en 1996, par la publication de l’ouvrage

19. The ICMI Felix Klein And Hans Freudenthal Awards For 2003 Translate this page bhodgson@mat.ulaval.ca, tel. +1 418 656 2131 ext. 2975, fax +1 418 6562817. Les médailles ICMI Felix Klein et hans freudenthal pour 2003. http://www.ardm.asso.fr/brousseau_icmi.htm

English Version ICMI The International Commission on Mathematical Instruction PRESIDENT Hyman Bass , Department of Mathematics, University of Michigan, 525 E. University, Ann Arbor, MI 48109-1109 USA hybass@umich.edu , tel.: +1 (734)615-4043, fax (734)615-7441 VICE-PRESIDENTS Michèle  Artigue , Équipe DIDIREM, Case 7018, Université Paris 7, 2 place Jussieu, 75251 Paris – Cedex 05, France artigue@math.jussieu.fr , tel.: , fax: ( Jill Adler, School of Education, University of the Witwatersrand, P/Bag 3, PO Wits 2050, Johannesburg, South Africa adlerj@educ.wits.ac.za , tel:  27 11 7173413, fax: 27 11 717 3259 SECRETARY GENERAL Bernard R. Hodgson , Département de mathématiques et de statistique, Université Laval, Québec, G1K 7P4, Canada bhodgson@mat.ulaval.ca , tel.: +1 418 656 2131 ext. 2975, fax: +1 418 656 2817 Les médailles ICMI Felix Klein et Hans Freudenthal pour 2003 La Commission Internationale de l’Enseignement Mathématique (International Commission on Mathematical Instruction, ICMI), fondée à Rome en 1908, a, pour la première fois de son histoire, créé deux médailles pour récompenser des contributions majeures à la recherche en didactique des mathématiques. La médaille Felix Klein,  du nom du premier président d’ICMI (1908-1920), récompense l’œuvre d’une vie.  La médaille Hans Freudenthal, du nom du huitième président d’ICMI (1967-1970), récompense un ensemble de travaux d’intérêt majeur sur un thème précis. Ces médailles seront décernés chaque année impaire et elles seront remises aux lauréats lors du congrès international sur l’enseignement des mathématiques (ICME) suivant, les lauréats étant par ailleurs invités à faire une conférence à ce congrès.

20. Freudenthal Genealogy I am still editing this site. Last update November 2001 (and a littlebit in oktober 2003). hans freudenthal, hans and Lotte freudenthal. http://www.geocities.com/monicavdv/

Freudenthal-Family This site is genealogy site for descendants of Menko Freudenthal. The Freudenthal family originally lived in Tann am Rhoen in Germany. Also some information on the other jewish families of Tann is on this site. The information on this site is collected by Monica van der Velden. I am still editing this site Last update: November 2001 (and a little bit in oktober 2003) Hans Freudenthal Name index page 1 page 2 page 3 ... Kwartierstaat Hans Freudenthal Hans and Lotte Freudenthal Information on Freudenthal family members Pictures My daughter Myrthe Links to sites of family members ... The Sommerich Family from Ottensoos Joseph Freudenthal and Elsbeth Ehmann Sign Guestbook View Guestbook View the old guestbook Contact me by Email

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