Henrik Kragh Sørensen (1973-)

Steno Institute, Aarhus

Niels Henrik Abel (1802-29)

K_{3,3} \geq 2

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Henrik Kragh's lectures and seminars

You can also have a look at some pictures of Henrik lecturing, a formatted list of conferences lectures, or a formatted list of other lectures.

History of science in Scandinavia

2012/06/18Svend Bundgaard og matematikken i Danmark, 1912--1984@ Dansk Matematisk Forenings generalforsamling (Dansk Matematisk Forening, København, DK) June 18, 2012
2011/11/09Confluences of Agendas in Troubled Times: German Refugees and Mathematics in Denmark during the Inter-War Period@ Dansk Forskning i Matematikkens History og Filosofi X (Holbæk, DK) November 9 to 10, 2011
2011/10/30Confluences of Agendas in Troubled Times: German Refugees and Mathematics in Denmark during the Inter-War Period@ Emigration of Mathematicians and Transmission of Mathematics: Historical Lessons and Consequences of the Third Reich (Oberwolfach, DE) October 30 to November 5, 2011
2010/11/18Mathematics Denationalized: Scandinavian Mathematical Congresses, 1909-1925@ ESHS-4: Circulation of Science and Technology (Barcelona, ES) November 18 to 20, 2010
2009/11/10Scandinavian Mathematics Between Modernity and Applications: Applied Mathematics at Mathematical Congresses, 1900--1925@ Second Annual Conference for the History of Science in Norway (Tromsø, NO) November 10 to 12, 2009
2009/10/12Scandinavian Mathematics Between Modernity and Applications: Applied Mathematics at Mathematical Congresses, 1900--1925@ Between Modernism and Application: Comparative Studies in the History of Early 20th Century Mathematics (Frankfurt, DE) October 12 to 15, 2009
2008/07/04Meeting under the integral sign: Politics and mathematics at the 1936 ICM in Oslo@ Sixth Joint Meeting of the BSHS, CSHPS, and HSS (Oxford, UK) July 4 to 6, 2008
2008/05/20Meeting under the integral sign: Politics and mathematics at the 1936 International Congress of Mathematicians in Oslo@ First Annual Conference for the History of Science in Norway (Oslo, NO) May 20 to 22, 2008
2008/02/01Søde piger og matematik --- eller ``Der er intet forlystende ved matematik'': Danske satiriske fremstillinger af matematik@ Første Fredag i Februar: Matematikdag (Frederiksberg Seminarium, København, DK) February 1, 2008
2007/11/01Meeting under the integral sign: Politics and mathematics at the 1936 ICM in Oslo@ 18th Novembertagung (Bonn, DE) November 1 to 4, 2007
2007/05/25The International Congress of Mathematicians in Oslo 1936 and problems of international communication@ Internationalization of mathematics in the first part of the 20th century (Kristiansand, NO) May 25, 2007
2007/02/21``Der er intet forlystende ved matematik'' --- eller er der? Danske satiriske fremstillinger af matematik@ Foreningen Cirklen (Århus, DK) February 21, 2007
2006/04/18Fra Naturvidenskabens Danmarkshistorie - særligt om Matematik i Danmark 1800-1950@ Colloquium (IMADA, SDU, Odense, DK) April 18, 2006
2005/05/09The Abel Legacy, the Abel Centennial, and the shaping of Norwegian mathematics around 1900@ Science in Scandinavia around 1900 (Kristiansand, NO) May 9 to 11, 2005
2005/02/10De matematiske videnskaber i Danmark, 1850-1970@ History of science in Denmark (History of Science Department, Århus, DK) February 10, 2005
2004/11/25Professionalization of mathematics in Scandinavia: Mathematicians using the history of mathematics@ 15th Novembertagung (Utrecht, NL) November 25 to 28, 2004
2004/11/15The professionalisation of Danish and Norwegian mathematical research around 1900@ Colloquium (Agder University College, Kristiansand, NO) November 15, 2004
2004/11/04The use of historiography in the formation of Scandinavian mathematics@ Science in Europe --- Europe in Science (1st ESHS conference) (Maastricht, NL) November 4 to 6, 2004
2004/09/30Forskningstraditioner og -kontakter i skandinavisk matematik ca. 1900@ Colloquium (History of Science Department, Århus, DK) September 30, 2004
2004/07/09Formation of regional research traditions in mathematics in Scandinavia: communities and communication@ 3rd joint meeting of the BSHM and the CSHPM (Cambridge, UK) July 9 to 11, 2004
2004/06/02Formation of regional research traditions in mathematics in Scandinavia: national historiographies@ 4th STEP Meeting (Science and Technology in the European Periphery) (Sandbjerg, DK) June 2 to 6, 2004
2003/05/14Mathematics in Denmark: Actor Groups, Objectives, and Means@ Mathematics 1850--1920 --- Modernity and Professionalisation (Aarhus, DK) May 14, 2003
2002/11/22Iscenesættelse af et fags fremgang: Dansk matematik i 1800-tallet@ IUHPS Annual meeting (Århus, DK) November 22, 2002

Abel's mathematics

2014/04/10Narrating Abel: Aesthetics as biography of the mathematical persona in public culture@ Mathematical Cultures III (London, UK) April 10 to 12, 2014
2014/03/20Narrating Abel: Aesthetics as biography of the mathematical persona@ The Common Denominator (Leipzig, DE) March 20 to 22, 2014
2014/01/24Abel's exception, history of infinity and cognitive accounts of mathematics: One chance fumbled and another one missed@ Joint Mathematics Colloquium (Sydney, AU) January 24, 2014
2013/09/20Infinity and intuition in analysis between Euler and Weierstrass@ FotFS-VIII: History and Philosophy of Infinity (Cambridge, UK) September 20 to 23, 2013
2013/07/22When mathematics teachers fight: Hansteen's and Holmboe's biographical constructions of Abel's legacy@ 24th International Congress of History of Science, Technology and Medicine (Manchester, UK) July 22 to 28, 2013
2012/03/13What's Abelian about abelian groups?@ IFA Residential Research Meeting (Ebeltoft, DK) March 13, 2012
2012/03/03What's Abelian about Abelian groups?@ BSHM Research in Progress Meeting (Oxford, UK) March 3, 2012
2011/12/15What can be ``Lost in Translation''? Interpreting Abel's mathematics@ Editing Historical Mathematics (Oxford, UK) December 15 to 16, 2011
2011/02/01Impossibility proofs in mathematics during the early nineteenth century@ Impossibility proofs in mathematics (Paris, FR) February 1, 2011
2010/12/16The use of history of mathematics among Scandinavian mathematicians, 1870--1950@ History of History of Mathematics (Oxford, UK) December 16 to 17, 2010
2010/11/10Lost in Translation: Reading (back into) Abel's mathematics@ Dansk Forskning i Matematikkens History og Filosofi IX (Holbæk, DK) November 10 to 11, 2010
2010/11/04What's Abelian about abelian groups?@ Mathematics colloquium (Department of Mathematics, Mainz, DE) November 4, 2010
2010/11/03Lost in Translation: Reading (back into) Abel's mathematics@ 21st Novembertagung (Mainz, DE) November 3 to 7, 2010
2010/04/15Den Romantiske Matematiks Ironi: Helte, Ligninger og Begrebs-Centreret Matematik@ IMFUFA seminar (IMFUFA, RUC, Roskilde, DK) April 15, 2010
2010/02/26The use of history of mathematics among Scandinavian mathematicians, 1870-1950@ Fagligt farvel-arrangement for Kirsti Andersen (Århus, DK) February 26, 2010
2010/02/25Gennem kaninhullet: Hvordan matematikken blev mærkelig i det 19. århundrede@ Talentundervisning i matematik (Favrskov Gymnasium, Hadsten, DK) February 25, 2010
2009/11/02Algebra and Analysis as Styles in Abel's Mathematics@ Dansk Forskning i Matematikkens History og Filosofi VIII (Holbæk, DK) November 2 to 3, 2009
2009/10/26Abel og Den Romantiske Matematiks Ironi: Helte, Ligninger og Begrebs-Centreret Matematik@ Hansteen Symposium (Oslo, NO) October 26, 2009
2009/09/24For hele Norges skyld: Et causeri om Abel og Darwin@ Abelseminaret 2009 (Gjerstad, NO) September 24 to 26, 2009
2009/09/08Abelske grupper: Hvori består det \emph{Abelske} ved \emph{abelske grupper}?@ Eulers venner (Århus, DK) September 8, 2009
2009/07/28``Throwing some light on the vast darkness that is Analysis'': Niels Henrik Abel's contributions to the re-orientation of analysis in the 1820s@ XXIII International Congress of History of Science and Technology (Budapest, HU) July 28 to August 2, 2009
2009/03/10Den Romantiske Matematiks Ironi: Helte, Ligninger og Begrebs-Centreret Matematik@ Aspects of the history and philosophy of mathematics (Department of Science Studies, Århus, DK) March 10, 2009
2008/11/28Matematik+Romantik=Ironi: Verdener skabt ud af intet@ Romanticism and Science (Emdrup, DK) November 28, 2008
2008/11/05Romantic Equations and the Rise of Concept-Centred Mathematics@ 19th Novembertagung (Holbæk, DK) November 5 to 9, 2008
2008/10/23Romantic Equations and the Rise of Concept-Centred Mathematics@ Weekly Math Seminar (Newcastle University, Newcastle, AU) October 23, 2008
2008/10/17Romantic Equations and the Rise of Concept-Centred Mathematics@ Joint Mathematics Colloquium (Sydney University and University of New South Wales, Sydney, AU) October 17, 2008
2008/03/06Romantic Equations: The Fundamental Theorem of Algebra and the Solution of Polynomial Equations in the Nineteenth Century@ Aspects of the history and philosophy of mathematics (Department of Science Studies, Århus, DK) March 6, 2008
2007/11/26Wittgenstein, Abel og funktionsbegrebet@ Dansk Forskning i Matematikkens History og Filosofi VI (Holbæk, DK) November 26 to 27, 2007
2007/08/09Functions as formulae and/or concepts in the early nineteenth century@ 13th International Congress of Logic, Methodology and Philosophy of Science (Beijing, CN) August 9 to 15, 2007
2007/03/26Representations as means and ends: Representations in mathematical analysis during the first part of the nineteenth century@ PMP2007: Perspectives on Mathematical Practices (Brussels, BE) March 26 to 28, 2007
2006/11/03Getting to know each other: The role of habituation in analysis during the early nineteenth century@ 17th Novembertagung (Edinburgh, UK) November 3 to 5, 2006
2006/03/09Genus-begrebet fra Abel til Riemann: Rekontekstualisering i matematikken@ Dansk Forskning i Matematikkens Historie og Filosofi V (Holbæk, DK) March 9 to 10, 2006
2005/11/04On fluid, yet fundamental, concepts in Abel's mathematics@ 16th Novembertagung (Paris, FR) November 4 to 6, 2005
2005/01/13Abels værk mellem formel- og begrebs-centreret matematik@ Colloquium (IMADA, SDU, Odense, DK) January 13, 2005
2004/11/24Fra ligningsteori til gruppeteori: Abel og Galois@ Thirteen episodes from the history of mathematics (History of Science Department, Århus, DK) November 24, 2004
2004/10/31Habituation and representation of elliptic functions in Abel's mathematics@ History of Differential Equations, 1670--1950 (Oberwolfach, DE) October 31 to November 6, 2004
2004/08/10Form vs. begreb: Abel og Galois om `uløselige' ligninger@ DMF Summer School (Århus, DK) August 10, 2004
2004/05/12Understanding Abel's mathematics in a framework of formula-centred and concept-centred mathematics@ Exploring the History of Mathematics: How do we know what questions to ask? (Richmond, Virginia, US) May 12 to 15, 2004
2004/02/26Further towards a framework for interpreting Abel's mathematics@ GWAD (Utrecht, NL) February 26, 2004
2003/11/24Patologiske eksemplers betydning for funktionsbegrebets udvikling@ Course for Faroese teachers of mathematics (Vágar, FO) November 24, 2003
2003/11/14Towards a framework for interpreting Abel's mathematics@ GWAD (Utrecht, NL) November 14, 2003
2003/11/13What's \emph{Abelian} about \emph{abelian} groups?@ Staff colloquium (Department of Mathematics, Utrecht, NL) November 13, 2003
2003/10/17Niels Henrik Abel (1802-1829) and the Emergence of Concept-Centred Mathematics@ 2nd International History and Philosophy of Mathematics Meeting (Seville, ES) October 17 to 19, 2003
2003/05/01Formula-Centred and Concept-Centred Mathematics in the Early 19th Century@ 1st Nordic post-graduate workshop in the History of Science and Technology (Bjerringbro, DK) May 1 to 4, 2003
2002/12/02Abel and the early 19th century change in the basic objects of mathematics@ PHIS Graduate Conference 2002 (Odense, DK) December 2 to 3, 2002
2002/11/12Patologiske eksemplers betydning for funktionsbegrebets udvikling@ LMFK course for teachers of mathematics (Slagelse, DK) November 12, 2002
2002/10/25Midt i en matematisk brydningstid --- Niels Henrik Abel og hans matematik@ LMFK Annual meeting (Århus, DK) October 25, 2002
2002/05/03Abel's mathematics in the context of traditions and changes@ PhD defence (Århus, DK) May 3, 2002
2002/04/12Hvad har svære ligninger, uendelige rækker og ellipser med fodbold og langrend at gøre?@ IVH Presentation for students (History of Science Department, Århus, DK) April 12, 2002
2002/04/11Algebraisk ligningsløsning fra Lagrange til Galois@ Thirteen episodes from the history of mathematics (History of Science Department, Århus, DK) April 11, 2002
2002/04/05Niels Henrik Abel - matematik under brydning@ Abel mini-symposium (Kristiansand, NO) April 5, 2002
2001/12/19``Abel den Lykkelige'' --- juleforelæsning i Aspekter@ Aspects of the history and philosophy of mathematics (History of Science Department, Århus, DK) December 19, 2001
2001/11/29``Abel den Lykkelige'': Temaer fra den matematiske brydningstid i 1820'erne@ Colloquium (Department of Mathematics, Aalborg, DK) November 29, 2001
2001/11/03``Abel den lykkelige''@ IVH Alumni meeting (History of Science Department, Århus, DK) November 3, 2001
2001/08/31Fra algebraisk ligningsløsning til abstrakt gruppeteori@ DMF Summer School (Sandbjerg, DK) August 31, 2001
2001/05/10Abels Pariserafhandling og dens placering i den matematiske brydningstid@ Colloquium (History of Science Department, Århus, DK) May 10, 2001
2001/04/24Abels Pariserafhandling og dens placering i den matematiske brydningstid@ Colloquium (Society for the history of science, København, DK) April 24, 2001
2000/11/12Aspekter af den matematiske brydningstid i begyndelsen af 1800-tallet@ Dansk forskning i Matematikkens Historie og Filosofi III (Holbæk, DK) November 12 to 13, 2000
2000/05/24Early 19th century rigor in analysis. The theory of infinite series as seen by N. H. Abel@ Colloquium (Palermo, IT) May 24, 2000
2000/05/07N. H. Abel on elliptic functions. Problems of division and reduction@ Colloquium (Palermo, IT) May 7, 2000
2000/05/03I mesterlære som matematiker for 200 år siden. Niels Henrik Abel og hans matematik@ Eulers venner (Århus, DK) May 3, 2000
1999/12/14N. H. Abel og hans matematik@ Aspects of the history and philosophy of mathematics (History of Science Department, Århus, DK) December 14, 1999
1999/12/08Matematisk brydningstid og Niels Henrik Abels matematik@ Qualifying examination (History of Science Department, Århus, DK) December 8, 1999
1999/03/12Niels Henrik Abel's matematik@ Dansk forskning i Matematikkens Historie og Filosofi II (Holbæk, DK) March 12 to 13, 1999
1998/12/11Cauchy og Abel@ Aspects of the history and philosophy of mathematics (History of Science Department, Århus, DK) December 11, 1998
1998/11/25Style and rigor in Niels Henrik Abel's mathematics@ Colloquium (Department of Mathematics, Utrecht, NL) November 25, 1998
1998/10/30Theorems with exceptions and the use of proof@ 9th Novembertagung in the History of Mathematics (Nijmegen, NL) October 30 to November 1, 1998
1997/04/01Patologiske funktioner og modeksemplets metode (med Bjarne Aagaard)@ History of analysis (History of Science Department, Århus, DK) April 1, 1997
1994/11/01Abels udledning af binomialsætningen@ History of infinite series (History of Science Department, Århus, DK) November 1, 1994

Mathematics and culture

2013/01/21Gennem kaninhullet: Hvordan matematikken blev moderne@ Matematiske Mysterier (Folkeuniversitetet i Aarhus, Aarhus, DK) January 21, 2013
2012/03/06Gennem kaninhullet: Hvordan matematikken blev moderne@ Besøgsservice (Birkerød Gymnasium, HF og IB, Birkerød, DK) March 6, 2012
2012/03/05Gennem kaninhullet: Hvordan matematikken blev moderne@ Matematiske Mysterier (Folkeuniversitetet i Emdrup, Emdrup, DK) March 5, 2012
2011/10/04Gennem kaninhullet: Hvordan matematikken blev moderne@ Eulers venner (Aarhus, DK) October 4, 2011
2011/09/20Gennem kaninhullet: Hvordan matematikken blev moderne@ Matematiske Mysterier (Folkeuniversitetet i Aarhus, Aarhus, DK) September 20, 2011
2010/06/12Aspekter af Cantors og Gödels tænkning om matematikkens begrænsninger og religion@ Symposium: Forum Teologi Naturvidenskab (Århus, DK) June 12, 2010
2010/04/20Matematikken og verden: Det gyldne snit og matematikkens anvendelighed@ Besøgsservice: 1.g-matematikklasse fra Struer (Aarhus Universitet, Århus, DK) April 20, 2010
2010/02/08Træk af matematikkens historie med et særligt øje for samspillet mellem matematik og tro@ Forum Teologi og Naturvidenskab (Aarhus Universitet, Århus, DK) February 8, 2010
2006/09/11The Beauty of Mathematics@ Besøgsservice (Århus Statsgymnasium, Århus, DK) September 11, 2006
2001/09/27Matematik og sprog (workshop)@ Besøgsservice (Odder Gymnasium, Odder, DK) September 27, 2001

Philosophy of science

2014/11/06Mathematics in interdisciplinary modelling: The case of quasi-crystals@ PSA 2014 (Chicago, US) November 6 to 9, 2014
2014/07/14Cognitive conflicts and exploratory experimentation: How can the continuous overlap between empirical and deductive proof schemes be conceptualized?@ ESU-7: 7th European Summer University on the History and Epistemology in Mathematics Education (Copenhagen, DK) July 14 to 18, 2014
2014/04/07Matematiske modeller i historisk og videnskabsteoretisk lys@ Foredrag for gymnasielærere (Mariager, DK) April 7, 2014
2014/02/27Matematikkens historie og videnskabsteori: Vedkommende refleksioner om matematikkens metoder og identitet i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 27, 2014
2014/02/26Om matematiske modeller@ Besøgsservice (Aarhus, DK) February 26, 2014
2014/02/06Matematikkens historie og videnskabsteori: Vedkommende refleksioner om matematikkens metoder og identitet i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 6, 2014
2014/01/31Teaching relevant philosophy of mathematics --- philosophy of mathematics relevant for teaching@ 1st annual Meeting in the Danish Network in Philosophy of Science and Annual Meeting of the Danish National Committee of History and Philosophy of Science (Odense, DK) January 31 to February 1, 2014
2014/01/31Invitation to the philosophy of mathematics@ 1st annual Meeting in the Danish Network in Philosophy of Science and Annual Meeting of the Danish National Committee of History and Philosophy of Science (Odense, DK) January 31 to February 1, 2014
2013/11/13Cultures of mathematization: Tracing divergent views on explanations@ Historical Perspectives on Mathematics As a Tool (Bielefeld, DE) November 13 to 15, 2013
2013/10/24Hvad er matematik? Et videnskabsteoretisk vue@ LMFK årskursus (Aarhus, DK) October 24 to 25, 2013
2013/09/17Cultures of mathematization: Tracing divergent views on explanations@ Mathematical Cultures II (London, UK) September 17 to 19, 2013
2013/09/16Cultures of mathematization: Tracing divergent views on explanations@ CSS Colloquium (Aarhus, DK) September 16, 2013
2013/09/05Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) September 5, 2013
2013/05/02On embodied mathematics, conceptual metaphors and the romance of mathematics@ The Body - Materiality and Meaning: Interdisciplinary Day Seminar (Aarhus, DK) May 2, 2013
2013/02/27Matematik og modeller i naturvidenskab@ Besøgsservice: Teknisk Gymnasium Grenå (Aarhus, DK) February 27, 2013
2013/02/26Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 26, 2013
2013/02/05Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 5, 2013
2013/01/29Matematik og modeller i naturvidenskab@ Fagets identitet og metoder i de naturvidenskabelige fag og matematik (Middelfart, DK) January 29, 2013
2012/11/09Matematik og modeller i naturvidenskab@ Fagets identitet og metoder i de naturvidenskabelige fag og matematik (Middelfart, DK) November 9, 2012
2012/09/06Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) September 6, 2012
2012/02/09Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 9, 2012
2011/09/08Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) September 8, 2011
2011/06/23Making philosophy of science relevant for science students@ How Science Works - and How to Teach It (Aarhus, DK) June 23 to 25, 2011
2011/02/10Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Vejle, DK) February 10, 2011
2010/10/08Vedkommende videnskabsteori for gymnasiets matematikundervisning@ NoS-workshop (Århus, DK) October 8, 2010
2010/09/21Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Konference om udviklingsprojekt i matematikkens videnskabsteori (Matematiklærerforeningen, Odense, DK) September 21, 2010
2010/09/14Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Konference om udviklingsprojekt i matematikkens videnskabsteori (Matematiklærerforeningen, Aalborg, DK) September 14, 2010
2010/09/09Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Vejle, DK) September 9, 2010
2010/05/10Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Halvdagskursus om matematikkens metoder (Århus Katedralskole, Århus, DK) May 10, 2010
2009/09/10Matematikkens metode(r): Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) September 10, 2009
2009/08/18CUDOS/PLACE: modes of science@ Scientific Practice PhD course (Department of Science Studies, Århus, DK) August 18, 2009
2009/05/04Vedkommende videnskabsteori i gymnasiets matematikundervisning@ Opstartsseminar om matematikkens videnskabsteori i gymnasiet (Nyborg, DK) May 4, 2009
2009/02/25Matematikkens metode(r): Videnskabsteori og matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) February 25, 2009
2009/01/23Matematikkens metode(r): Videnskabsteori og matematikundervisning@ "Et rigtigt midtvejskursus i matematik" (Det almenpædagogiske samarbejde på Fyn, Svendborg, DK) January 23, 2009
2008/09/17Matematikkens metode(r): Videnskabsteori og matematikundervisning@ Fagligt-pædagogisk kursus i matematik (Middelfart, DK) September 17, 2008
2008/04/17``Matematik er Ikke Noget For Søde Piger'' \Dash Mindretal, Stereotyper og Matematik på Film@ 3rd Department of Science Studies film seminar (Department of Science Studies, Århus, DK) April 17, 2008
2008/02/28Matematikkens metode(r) \dots\ et blik på matematikkens videnskabsteori@ Fagligt-pædagogisk kursus i matematik (Vejle, DK) February 28, 2008
2008/01/09Matematikkens videnskabsteori på bacheloruddannelsen i matematik ved Aarhus Universitet@ Matematiklærergruppen ved Århus Statsgymnasium (Århus, DK) January 9, 2008
2007/03/30Breaking the Enigma@ 2nd Steno Department film seminar (Steno Department, Århus, DK) March 30, 2007
2006/11/08Matematik i sprogvidenskabelig optik: Matematikkens sprog@ ``Tekster på tværs'' (Vesthimmerlands Gymnasium, Aars, DK) November 8, 2006
2006/04/24Matematik i sprogvidenskabelig optik: Matematikkens sprog@ ``Tekster på tværs'' (Marselisborg Gymnasium, Århus, DK) April 24, 2006
2006/03/31Et smukt sind - En smuk videnskab? Matematik og matematikere på film@ 1st Steno Department film seminar (Steno Department, Århus, DK) March 31, 2006
2006/03/09Matematikkens Videnskabsteori efter Århus-modellen@ Dansk Forskning i Matematikkens Historie og Filosofi V (Holbæk, DK) March 9, 2006
2002/05/10Introduktion til matematikkens grundlag og filosofi@ Thirteen episodes from the history of mathematics (History of Science Department, Århus, DK) May 10, 2002
2000/12/06Tymoczko og 4-farve-sætningen@ Philosophy of mathematics (History of Science Department, Århus, DK) December 6, 2000
2000/10/28Lakatos og matematikhistorien@ Philosophy of mathematics (History of Science Department, Århus, DK) October 28, 2000

History of mathematics

2014/11/130, 1, $\sqrt{2}$: Hvor kommer tallene fra?@ UNF (Aarhus, DK) November 13, 2014
2014/03/28Narrativ, autentisk og kildebaseret matematikhistorie i gymnasiet: En tilgang til logistisk vækst@ Matematiklærerdag (Aarhus, DK) March 28, 2014
2014/03/14Ligningers løsningsformler fra Babel til Abel: Hvad er matematik?@ Besøgsservice: Vejen Gymnasium og HF (Aarhus, DK) March 14, 2014
2014/02/20Klassiske konstruktionsproblemer efter grækerne@ Matematikken i Antikken (Aarhus, DK) February 20, 2014
2013/07/15"Der er intet forlystende ved matematik" --- eller er der?@ UNF MatematikCamp (Aarhus, DK) July 15, 2013
2013/05/14Narrativ, autentisk og kildebaseret matematikhistorie i gymnasiet@ DMUK Forårsmøde (Danmarks Matematikundervisningskommission, København, DK) May 14, 2013
2011/01/26Matematiseret virkelighedsbeskrivelse og/eller abstrakt teori@ Besøgsservice (Struer Statsgymnasium, Århus, DK) January 26, 2011
2006/11/21Fra matematiseret virkelighedsbeskrivelse til abstrakt geometri@ Besøgsservice (Sønderborg gymnasium, Århus, DK) November 21, 2006
2006/03/20Ligningsløsning og komplekse tal fra Babel til Abel@ Besøgsservice (Aarhus Katedralskole, Århus, DK) March 20, 2006
2006/03/07Ligningsløsning fra Babel til Abel@ Besøgsservice (Risskov Amtsgymnasium, Århus, DK) March 7, 2006
2003/03/08Temaer fra kryptologiens historie@ Masteruddannelsen i kryptologi (Århus, DK) March 8, 2003
2003/02/19Ligningers løsningsformler fra Babel til Abel: Hvad er matematik?@ Besøgsservice (Skanderborg, Århus, DK) February 19, 2003
2003/02/17Matematikken i begyndelsen af 1800-tallet@ Besøgsservice (Århus, DK) February 17, 2003
2003/02/06Ligningers løsningsformler fra Babel til Abel: Hvad er matematik?@ Besøgsservice (Risskov Amtsgymnasium, Århus, DK) February 6, 2003
2002/05/13Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (Marselisborg Gymnasium, Århus, DK) May 13, 2002
2001/09/18Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (Marselisborg Gymnasium, Århus, DK) September 18, 2001
2001/09/14Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (VUC Roskilde, Roskilde, DK) September 14, 2001
2001/09/12Ligningsløsningens sprog@ Besøgsservice (Århus Statsgymnasium, Århus, DK) September 12, 2001
2001/05/08Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (Risskov Amtsgymnasium, Århus, DK) May 8, 2001
2001/03/15Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (Risskov Amtsgymnasium, Århus, DK) March 15, 2001
2001/03/01Ligningers løsningsformler fra Babel til Abel@ Besøgsservice (Risskov Amtsgymnasium, Århus, DK) March 1, 2001
1998/09/29Algebraisk løsning af ligninger i historisk lys@ Besøgsservice (Århus Statsgymnasium, Århus, DK) September 29, 1998

Teaching history of mathematics

2014/07/14Using authentic sources in teaching mathematics: A narrative design perspective@ ESU-7: 7th European Summer University on the History and Epistemology in Mathematics Education (Copenhagen, DK) July 14 to 18, 2014
2014/06/19@ Teaching the history and philosophy of science and technology in higher education: challenges and experiences at the undergraduate level (Paris, FR) June 19 to 20, 2014

ExpMath

2012/12/12Eksperimentel forskning i matematik: Hvordan rygtet om det matematiske bevis' død er stærkt overdrevet@ Seminar om IT og undersøgende arbejdsformer i matematik (Copenhagen, DK) December 12, 2012
2012/11/16Reflections on exploratory experimentation in mathematics@ XM-seminar (København, DK) November 16, 2012
2012/09/10The End of Proof? The integration of different mathematical cultures as experimental mathematics comes of age@ Mathematical Cultures I (London, UK) September 10 to 12, 2012
2011/03/04Mellem eksperimenter, billeder og beviser: Hvordan ”eksperimentelle” matematiske resultater bliver robuste@ Dansk Filosofisk Selskabs årsmøde (Copenhagen, DK) March 4 to 5, 2011
2010/08/12Experimental Mathematics and Mathematical Explanation@ Workshop on Explanations in Mathematics (Aarhus, DK) August 12 to 13, 2010
2010/06/21Experimental mathematics and the notion of proof@ From Practice to Results in Logic and Mathematics (Nancy, FR) June 21 to 23, 2010
2010/04/19Experimental mathematics in the 1990s: The second loss of certainty?@ Research group meeting (IVS, AU, Århus, DK) April 19, 2010
2010/04/08Experimental mathematics in the 1990s: The second loss of certainty?@ IMF seminar (IMF, AU, Århus, DK) April 8, 2010
2010/03/11Are proofs mathematical experiments? Are mathematical experiments proofs?@ Thought Experiments and Computer Simulations: Same End, Different Means? (Paris, FR) March 11 to 13, 2010
2010/02/28Experimental mathematics in the 1990s: A second loss of certainty?@ Disciplines and Styles in Pure Mathematics, 1800-2000 (Oberwolfach, DE) February 28 to March 6, 2010
2009/06/21Are proofs mathematical experiments? Are mathematical experiments proofs?@ Miniworkshop: History and Philosophy of Mathematical Practice (Sandbjerg, DK) June 21 to 24, 2009
2009/06/18Are proofs mathematical experiments? Are mathematical experiments proofs?@ SPSP-2: Philosophy of Science in Practice (Minnesota, US) June 18 to 20, 2009
2008/10/06What's experimental about experimental mathematics?@ Dansk Forskning i Matematikkens History og Filosofi VII (Holbæk, DK) October 6 to 7, 2008
2008/09/22What's experimental about experimental mathematics?@ Colloquium (Department of Science Studies, Århus, DK) September 22, 2008
2008/06/16What computers do to mathematics: The emergence of a sub-discipline of \emph{experimental mathematics}@ E-CAP08: 6th European Conference on Computing and Philosophy (Montpellier, FR) June 16 to 18, 2008
2008/05/16What computers do to mathematics: The emergence of a sub-discipline of \emph{experimental mathematics}@ PhiMSAMP-3: Philosophy of Mathematics - Sociological Aspects of Mathematical Practice (Vienna, AT) May 16 to 18, 2008