Christer Oscar Kiselman
Professor emeritus at Department of Mathematics; Academic staff
- E-mail:
- christer.kiselman@math.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
- Postal address:
- Box 480
751 06 UPPSALA
Professor emeritus at Department of Mathematics; Analysis and Partial Differential Equations
- E-mail:
- christer.kiselman@math.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
- Postal address:
- Box 480
751 06 UPPSALA
Short presentation
Christer Oscar Kiselman is a human being.
Somewhat more precisely, he is a mathematician who speaks Swedish, Esperanto, English, and French.
He has done research on partial differential equations, then on complex analysis and complex geometry. Nowadays he works mainly on digital geometry, mathematical morphology, and discrete optimization.
More information can be found on Christer Kiselman's personal website.
Keywords
- digital geometry
- mathematical morphology
- discrete optimization
- esperanto
- complex geometry
- yiddish
Biography
For more details, see my web site at www.cb.uu.se/~kiselman/.
I am a mathematician who speaks Swedish, Esperanto, English, and French. Since 2014, I am a guest professor at Uppsala University.
The mathematicians who have meant most for me were Lars Hörmander (1931--2012) and André Martineau (1930--1972).
I have been the main scientific advisor of eighteen doctoral students from seven countries. They obtained their degrees during the period 1974--2016; four of these after my retirement. The last two from Stockholm University and l'Université des Sciences, des Techniques et des Technologies de Bamako.
In school I studied English, German, and French. My most inspiring teacher was Karl Axnäs (1899--1984). I started to study Russian at the age of 13. I lived more than one year in the United States and more than two years in France. I studied Persian (2007--2009) and Classical Greek (2010--2011) at Uppsala University and, during the academic year 2015/2016, Yiddish at Lund University. In July 2016 I participated in a seven-day course in Yiddish in Weimar.
Research
I have done research on partial differential equations; then during many years on complex analys and complex geometry, including geometry in infinitely many dimensions. My latest puplications on complex geometry (16-1) was published in March 2016. A later paper on complex geometry was accepted in March 2019 for publication.
Nowadays I am working mainly on digital geometry, mathematical morphology, and discrete optimization---I am writing a book on these topics.
I am doing research also on Esperanto and Yiddish (publications 92-a, 08-a, 15-a, 15-b, 16-b). I have two longer texts in preparation.

Publications
Selection of publications
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Part of Constructive Approximation of Functions, p. 159-174, Polish Academy of Sciences, 2016
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Esperantologio / Esperanto Studies
2015
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La lingvoj de Zamenhof (1878, 1881, 1887, 1905)
Part of Literatura Foiro, p. 260-265, 2015
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Part of Upsala Nya Tidning, 2015
-
Kombineblo de vortelementoj en esperanto – rigardoj malantaŭen kaj antaŭen
Part of Esperantologio / Esperanto Studies, p. 73-125, 2015
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Part of Esperantologio / Esperanto Studies, p. 126-126, 2015
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Estimates for solutions to discrete convolution equations
Part of Mathematika, p. 295-308, 2015
-
Part of Normat, p. 145-169, 2015
-
To the Memory of Lars Hörmander (1931–2012): Lars Hörmander—some early memories
Part of Notices of the American Mathematical Society, p. 904-905, 2015
-
Part of Sundelöfs Societet, p. 25-42, Kungl. Vetenskaps-Societeten, 2015
-
Hur kommer forskningen i Sverige att påverkas av utvärderingarna?
Part of Bulletinen. Svenska matematikersamfundets medlemsblad, p. 16-24, 2015
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Part of Normat, p. 70-81, 2014
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Questions inspired by Mikael Passare's mathematics
Part of Afrika Matematika, p. 271-288, 2014
-
Låt oss förbättra samfundets ekonomi!
Part of SMS-Bulletinen, p. 12-13, 2014
-
Stärk Normat genom att vidga dess bas!
Part of SMS-Bulletinen, p. 13, 2014
-
Kiel rekoni rektojn kaj strekojn inter ĉiuj kurboj kaj aliaj bildoj sur la komputila ekrano?
Part of Internacia Simpozio "Apliko de Esperanto en la profesia agado". Prelegaro, Vol. II., p. 72-92, Akademio Internacia de la Sciencoj, AIS, San Marino. AIS-Bulgario., 2014
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Part of SMS-Bulletinen, p. 13-19, 2013
-
Esperantologio / Esperanto Studies / EES / Issue No. 6
KAVA-PECH, 2013
-
Paul Neergaard: sempatologo kaj esperantologo
Part of Pioniroj de la Internacia Lingvo. Aktoj de la 34-a Esperantologia Konferenco en la 96-a Universala Kongreso de Esperanto, Kopenhago 2011., p. 19-33, Universala Esperanto-Asocio, 2012
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Part of Newsletter of the European Mathematical Society, p. 12-15, 2012
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Part of Prelegaro, Parto II. Internacia Simpozio "Apliko de Esperanto en la profesia agado", p. 72-84, Akademio Internacia de la Sciencoj, 2012
-
Characterizing digital straightness and digital convexity by means of difference operators
Part of Mathematika, p. 355-380, 2011
-
Analytic continuation of fundamental solutions to differential equations with constant coefficients
Part of Annales de la Faculté des Sciences de Toulouse, Mathématiques, p. 153-182, 2011
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Part of Medlemsutskicket från Svenska Matematikersamfundet, p. 17-35, 2011
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Les mathématiques de Nguyen Thanh Van
Part of Annales de la Faculté des Sciences de Toulouse, Mathématiques, p. 19-32, 2011
-
Esperantologio / Esperanto Studies / EES / Issue No. 5
KAVA-PECH, 2011
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Part of Svenska Matematikersamfundet, SMS-bulletinen, p. 7-17, 2011
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Part of Svenska Matematikersamfundet, Medlemsutskick, p. 17-35, 2011
-
Inverses and quotients of mappings between ordered sets
Part of Image and Vision Computing, p. 1429-1442, 2010
-
Characterizing digital straightness by means of difference operators
Part of Proceedings SSBA 2010. Symposium on Image Analysis, Uppsala, March 11—12, 2010., p. 15-18, 2010
Recent publications
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Generalized elementary functions
Part of Complex Variables and Elliptic Equations, p. 918-931, 2023
- DOI for Generalized elementary functions
- Download full text (pdf) of Generalized elementary functions
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Digital geometry, mathematical morphology, and discrete optimization
Part of Lecture Notes in Computer Science, p. 26-93, Springer Nature, 2022
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Part of Handbook of Complex Analysis, p. 245-377, CRC Press, 2022
-
Cauchy problems for discrete holomorphic functions
Part of In Memeory of Carlos A. bernstein (1944--2019), Birkhäuser, 2022
-
Digital geometry, mathematical morphology, and discrete optimization: A survey
Part of Discrete geometry and Mathematical Morphology, p. 26-31, Springer, 2022
All publications
Articles in journal
-
Generalized elementary functions
Part of Complex Variables and Elliptic Equations, p. 918-931, 2023
- DOI for Generalized elementary functions
- Download full text (pdf) of Generalized elementary functions
-
Which Convexity Properties are Preserved under Linear Mappings?
Part of Journal of Convex Analysis, p. 1023-1035, 2022
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Part of Matematiko translimen, p. 3-5, 2021
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Letter to the Editor: [About Institute Mittag-Leffler]
Part of Notices of the American Mathematical Society, p. 319-320, 2021
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Kiel plej bone faldi triangulon?
Part of Matematiko tranlimen, p. 149-155, 2021
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Elementoj de digita geometrio, matematika morfologio kaj diskreta optimumado
Part of Matematiko tranlimen, p. 11-94, 2021
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Existence of continuous right inverses to linear mappings in finite-dimensional geometry
Part of Mathematische Semesterberichte, p. 55-68, 2021
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Cauchy problems for discrete holomorphic functions
Part of Complex Analysis and Operator Theory, 2021
- DOI for Cauchy problems for discrete holomorphic functions
- Download full text (pdf) of Cauchy problems for discrete holomorphic functions
-
Akademio de Esperanto fronte al novaj taskoj.
Part of Esperantologio / Esperanto Studies. Nova Serio / New Series 1 (9), pp. 41--54, p. 41-54, 2020
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Andre Martineau: Some Memories
Part of Complex Analysis and Operator Theory, 2020
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Hans Rådström and how to define smooth functions on any set
Part of The Bulletin of the Swedish Mathematical Society, p. 20-23, 2019
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Werner Fenchel, a pioneer in convexity theory and a migrant scientist
Part of Nordisk Matematisk Tidskrift, p. 133-152, 2019
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Kion faris Zamenhof antaŭ 1887?
Part of La Espero, p. 3-3, 2019
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Part of Nordisk Matematisk Tidskrift. Normat., p. 111-132, 2019
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Generalized convexity: The case of lineally convex Hartogs domains
Part of Annales Polonici Mathematici, p. 319-344, 2019
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Part of La Espero, p. 5-5, 2019
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Part of La Espero, p. 5-5, 2019
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Esperantologio / Esperanto Studies, Issue 8: Salutvorto de la redaktoro
Part of Esperantologio / Esperanto Studies, p. 3-7, 2018
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Part of Esperantologio / Esperanto Studies, p. 8-12, 2018
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Domains of holomorphy for Fourier transforms of solutions to discrete convolution equations
Part of Science China Mathematics, p. 1005-1018, 2017
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Part of Mathematische Semesterberichte, p. 65-89, 2017
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Watching solar eclipses 1945–2017
Part of Bulletin of the Swedish Mathematical Society, p. 17-21, 2017
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Lars Hörmander—some early memories (Chinese)
Part of Mathematical Advances in Translation, p. 120-121, 2017
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Bråk och språk – vad som är förnuftigt och logiskt
Part of Nämnaren, p. 45-49, 2017
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Falska vänner, vassa vrår och språkliga fällor
Part of Nämnaren, p. 43-51, 2017
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Gennadi Henkin (1942–2016): Some memories
Part of Bulletinen. Svenska matematikersamfundets Bulletin., p. 37-44, 2016
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Olle Hanner på Stockholms högskola
Part of Svenska matematikersamfundets medlemsblad, p. 27-27, 2016
-
La lingvoj de Zamenhof (1878, 1881, 1887, 1905)
Part of Literatura Foiro, p. 260-265, 2015
-
Part of Upsala Nya Tidning, 2015
-
Kombineblo de vortelementoj en esperanto – rigardoj malantaŭen kaj antaŭen
Part of Esperantologio / Esperanto Studies, p. 73-125, 2015
-
Part of Esperantologio / Esperanto Studies, p. 126-126, 2015
-
Estimates for solutions to discrete convolution equations
Part of Mathematika, p. 295-308, 2015
-
Part of Normat, p. 145-169, 2015
-
To the Memory of Lars Hörmander (1931–2012): Lars Hörmander—some early memories
Part of Notices of the American Mathematical Society, p. 904-905, 2015
-
Part of Bulletinen. Svenska matematikersamfundets medlemsblad, p. 13-15, 2015
-
Hur kommer forskningen i Sverige att påverkas av utvärderingarna?
Part of Bulletinen. Svenska matematikersamfundets medlemsblad, p. 16-24, 2015
-
Part of Normat, p. 70-81, 2014
-
Questions inspired by Mikael Passare's mathematics
Part of Afrika Matematika, p. 271-288, 2014
-
Låt oss förbättra samfundets ekonomi!
Part of SMS-Bulletinen, p. 12-13, 2014
-
Stärk Normat genom att vidga dess bas!
Part of SMS-Bulletinen, p. 13, 2014
-
Part of SMS-Bulletinen, p. 13-19, 2013
-
Part of Newsletter of the European Mathematical Society, p. 12-15, 2012
-
Characterizing digital straightness and digital convexity by means of difference operators
Part of Mathematika, p. 355-380, 2011
-
Analytic continuation of fundamental solutions to differential equations with constant coefficients
Part of Annales de la Faculté des Sciences de Toulouse, Mathématiques, p. 153-182, 2011
-
Part of Medlemsutskicket från Svenska Matematikersamfundet, p. 17-35, 2011
-
Les mathématiques de Nguyen Thanh Van
Part of Annales de la Faculté des Sciences de Toulouse, Mathématiques, p. 19-32, 2011
-
Part of Svenska Matematikersamfundet, SMS-bulletinen, p. 7-17, 2011
-
Part of Svenska Matematikersamfundet, Medlemsutskick, p. 17-35, 2011
-
Inverses and quotients of mappings between ordered sets
Part of Image and Vision Computing, p. 1429-1442, 2010
-
Part of Science in China Series A, p. 604-619, 2008
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Local minima, marginal functions, and separating hyperplanes in discrete optimization
Part of Comptes rendus. Mathematique, p. 49-52, 2008
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Minima locaux, fonctions marginales et hyperplans séparants dans l'optimisation discrète
Part of Comptes Rendus de l'Académie des Sciences Paris, Sér. I, p. 49-52, 2008
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Enkonduko al distribucioj [Introduction to Distributions]
Part of Acta Sanmariensia, p. 105-132, 2007
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"Svenska språket dör ut på landets universitet": DN - Debatt
Part of Dagens Nyheter, 2005
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Utbildningens internationalisering och demokratin
Part of Quartilen, p. 15-16, 2005
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Vem bär ansvaret för byggfusk?
Part of Universen, p. 3, 2004
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Part of Dagens Nyheter: 2002-11-17, 2002
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Ensembles de sous-niveau et images inverses des fonctions plurisousharmoniques
Part of Bulletin des Sciences Mathématiques, p. 75, 2000
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Snöflingekurva på julpostfrimärke
Part of Akademinyheter, p. 3, 2000
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Part of Fonto, p. 30-31, 1999
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Libereco de kreado estu homa rajto: Raporto de konferenco de UNESKO
Part of Esperanto, p. 85, 1998
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Attenuating the singularities of plurisubhamonic functions
Part of Annales Polonici Mathematici, p. 173-197, 1994
Books
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Elements of Digital Geometry, Mathematical Morphology, and Discrete Optimization
World Scientific, 2022
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Zamenhof's Yiddish Grammar and His Universal Language: Two Projects in Ashkenazi Culture
KAVA-PECH, 2022
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Digita geometrio, matematika morfologio kaj diskreta optimumado
Akademio internacia de la sciencoj San Marino (AIS), 2018
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Göteborgs universitet, NCM, 2008
Chapters in book
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Digital geometry, mathematical morphology, and discrete optimization
Part of Lecture Notes in Computer Science, p. 26-93, Springer Nature, 2022
-
Part of Handbook of Complex Analysis, p. 245-377, CRC Press, 2022
-
Cauchy problems for discrete holomorphic functions
Part of In Memeory of Carlos A. bernstein (1944--2019), Birkhäuser, 2022
-
Digital geometry, mathematical morphology, and discrete optimization: A survey
Part of Discrete geometry and Mathematical Morphology, p. 26-31, Springer, 2022
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Falska vänner, vassa vrår och språkliga fällor [False friends, sharp corners, and languge traps]
Part of Nämnarens artikelsamling, March 2022, p. 23-31, Nationellt centrum för matematikutbildning (NCM), 2022
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Part of Steven G. Krantz (Ed.), Handbook of Complex Analysis. CRC Press, xi + 534 pages., p. 245-377, CRC Press, 2022
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Part of Aktoj de Internacia Scienca Akademio Comenius, Volume 2.,, p. 3-6, KAVA-PECH, 2021
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La jidogramatiko de Zamenhof kaj lia Lingvo universala
Part of Aktoj de Internacia Scienca Akademio Comenius, volumo 2. , p. 85-191, KAVA-PECH, 2021
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Part of Aktoj de Internacia Scienca Akademio Comenius, Volume 2., p. 192-210, KAVA-PECH, 2021
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Part of V Międzynarodowe Sympozjum, p. 33-54, Ars Libri Introligatornia, 2020
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Part of Międzynarodowe Sympozjum:, p. 100-121, Ars Libri Introligatornia, Wydawnictwo s.c., under the auspices of Uniwersytet Wrocławski and Europejskie Centrum Edukacji Międzykulturowej, 2020
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Part of Aliroj al esperanto, p. 5-8, KAVA-PECH, 2018
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Part of Analysis Meets Geometry, p. 5-9, Birkhäuser Verlag, 2017
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Part of Analysis Meets Geometry, p. 35-57, Birkhäuser Verlag, 2017
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Curriculum Vitae, Mikael Passare
Part of Analysis Meets Geometry, p. 3-4, Birkhäuser Verlag, 2017
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Convexity of marginal functions in the discrete case
Part of Analysis Meets Geometry, p. 287-309, Birkhäuser Verlag, 2017
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La jidogramatiko de Zamenhof kaj lia Lingvo universala: Mallonga versio
Part of Prilingve en Nitro: politike, historie, teorie, instrue, p. 159-175, Universala Esperanto-Asocio, 2016
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Lingva riĉo kaj la postuloj de la terminologio
Part of Lingua, politica, cultura, p. 125-135, Mondial, 2016
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Part of Tema: Lexikon över lexikon, p. 53-54, Hans Larsson Samfundet, 2016
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Part of Constructive Approximation of Functions, p. 159-174, Polish Academy of Sciences, 2016
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Part of Sundelöfs Societet, p. 25-42, Kungl. Vetenskaps-Societeten, 2015
-
Kiel rekoni rektojn kaj strekojn inter ĉiuj kurboj kaj aliaj bildoj sur la komputila ekrano?
Part of Internacia Simpozio "Apliko de Esperanto en la profesia agado". Prelegaro, Vol. II., p. 72-92, Akademio Internacia de la Sciencoj, AIS, San Marino. AIS-Bulgario., 2014
-
Paul Neergaard: sempatologo kaj esperantologo
Part of Pioniroj de la Internacia Lingvo. Aktoj de la 34-a Esperantologia Konferenco en la 96-a Universala Kongreso de Esperanto, Kopenhago 2011., p. 19-33, Universala Esperanto-Asocio, 2012
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Part of Prelegaro, Parto II. Internacia Simpozio "Apliko de Esperanto en la profesia agado", p. 72-84, Akademio Internacia de la Sciencoj, 2012
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Frozen history: Reconstructing the climate of the past
Part of Analysis, Partial Differential Equations and Applications, p. 97-114, Birkhäuser, 2009
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Språkens rikedomar och terminologins problem
Part of Matematiktermer för skolan, p. 287-292, Göteborgs universitet, NCM, 2008
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Part of Matematiska språk , p. 19-42, Santérus Förlag, 2008
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Esperanto: its origins and early history
Part of Prace Komisji Spraw Europejskich PAU, Tom II, p. 39-56, Polska Akademia Umiejetnosci, 2008
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Part of Människor och matematik, p. 1-6, Göteborgs universitet, NCM, 2008
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Part of Människor och matematik, p. 211-229, Göteborgs universitet, NCM, 2008
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Part of Det matematiska kulturarvet, p. 71-74, 2005
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Subharmonic functions on discrete structures
Part of Harmonic Analysis, Signal Processing, and Complexity, Birkhäuser, 2005
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Part of Educating for the Future. Proceedings of an International Symposium on Mathematics Teacher Education. Preparation of Mathematics Teachers for the Future, The Royal Swedish Academy of Sciences, Stockholm, 2004
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Part of Vikingaskeppet Ormen Friskes undergång, p. 273-291, Södertörns Högskola, Huddinge, 2004
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La geometrio de la komputila ekrano
Part of Internacia Kongresa Universitato, p. 1-12, Universala Esperanto-Asocio, Rotterdam, 2003
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Kreado de matematikaj terminoj
Part of Lingva planado kaj leksikologio; Language Planning and Lexicology, p. 173-187, Fonto, Chapecó-SC & Brasília-DF, 2001
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La sveda faklingvo en tekniko, matematiko kaj natursciencoj
Part of Studien zur Interlinguistik. Festschrift für Detlev Blanke zum 60. Geburtstag, p. 40-56, Kava-Pech, Dobrichovice, 2001
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Part of Eseoj memore al Ivo Lapenna, Kehlet, København, 2001
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Svenskt fackspråk inom teknik, matematik och naturvetenskap
Part of Libens Merito, p. 225, 2001
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Transitivaj kaj netransitivaj verboj en Esperanto [Transitive and intransitive verbs in Esperanto]
Part of La stato kaj estonteco de la internacia lingvo Esperanto, p. 191, Kava-Pech, Dobrichovice, 1995
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Plurisubharmonic functions and their singularities
Part of Complex Potential Theory, p. 273-323, Kluwer Academic Publishers, 1994
Collections (editor)
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KAVA-PECH, 2018
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Esperantologio / Esperanto Studies
2015
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Universala Esperanto-Asocio, 2015
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Esperantologio / Esperanto Studies / EES / Issue No. 6
KAVA-PECH, 2013
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Esperantologio / Esperanto Studies / EES / Issue No. 5
KAVA-PECH, 2011
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Esperantologio / Esperanto Studies / EES / Issue No. 4
KAVA-PECH, 2009
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Esperantologio / Esperanto Studies / EES / Issue No. 3
KAVA-PECH, 2005
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Esperantologio / Esperanto Studies / EES / Issue No. 2
Bambuk, 2001
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Esperantologio / Esperanto Studies / EES / Issue No. 1
Varna (print version); Uppsala University (electronic version), 1999
Conference papers
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Part of Proc. 3rd EAUMP Conference, p. 7-28, 2017
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Paul Neergaard: sempatologo kaj esperantologo
Part of Pioniroj de la Internacia Lingvo, p. 19-33, 2012
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Local minima, marginal functions, and separating hyperplanes in discrete optimization
Part of Abstracts: Short communications; Posters. International Congress of Mathematicians, Hyderabad, August 19–27, 2010, p. 572-573, 2010
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Characterizing digital straightness by means of difference operators
Part of Proceedings SSBA 2010. Symposium on Image Analysis, Uppsala, March 11—12, 2010., p. 15-18, 2010
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Division of mappings between complete lattices
Part of Mathematical Morphology and its Applications to Signal and Image Processing, p. 27, 2007
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Language policy for a bilingual faculty
Part of Bi- and multilingual universities, Helsinki, Finland, Sept 1-3, 2005, 2005
Conference proceedings (editor)
Reports
Other
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2021
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Part of Heroldo de Esperanto, p. 4-4, 2008
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Part of Monato, p. 21, 1996
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Part of Monato, p. 20, 1996
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Recenzo de: Konciza Gramatiko de Volapuko: de André Cherpillod
Part of Monato, p. 23, 1995
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Part of Elementa, p. 44, 1993