Siegfried Gottwald

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Siegfried Gottwald (2004)

Siegfried Johannes Gottwald (born March 30, 1943 in Limbach ; † September 20, 2015 ) was a German mathematician , logician and historian of science who was best known for his contributions to set theory and logic.

Live and act

Gottwald studied mathematics at the University of Leipzig from 1961 to 1966 . He then worked as a research assistant and in 1969 when Dieter Klaua with the work construction of numerical ranges, and the fundamentals of content theory in a polyvalent set theory to Dr. rer. nat. PhD . In 1972 he obtained the facultas docendi and in 1977 his habilitation . At the Philosophy Section of the University of Leipzig, he became a lecturer for mathematical logic in 1979, associate professor in 1987 and full professor for non-classical and mathematical logic in 1992.

His main research area were fuzzy sets and fuzzy methods, as well as multi-valued logic and the history of mathematics and logic. He was co-editor of the Lexicon of Famous Mathematicians .

Gottwald was Vice Dean of the Faculty of Social Sciences and Philosophy at the University of Leipzig for several years . In 2008 he retired .

Gottwald was married and had three children.

Awards and honors


Gottwald published over 150 articles in scientific journals, edited volumes and encyclopedias.


  • Construction of number ranges and the basics of content theory in a multi-valued set theory . Dissertation at the University of Leipzig September 24, 1969, DNB 482542853 .
  • with Hans Bock and Rolf-Peter Mühlig: On the use of language in mathematics. Geest & Portig, Leipzig 1972; Bagel / Vieweg, Düsseldorf / Braunschweig 1973, ISBN 3-513-00823-6 (Bagel) / ISBN 3-528-09823-7 (Vieweg).
  • with Paul Günther , Klaus Beyer , Volkmar Wünsch: Basic Analysis Course. Parts 1 to 4. BSB / Teubner, Leipzig 1972 to 1974, DNB 540199818 .
  • A cumulative system of multivalued sets , Dissertation B, University of Leipzig , Mathematics Section, 1977, DNB 790941422 .
  • with Karel Berka , Lothar Kreiser, Werner Stelzner: Logic texts. Annotated selection on the history of modern logic. 4th edition. Akademie-Verlag, Berlin 1986, DNB 850989647 .
  • Multi-valued logic. An introduction to theory and applications. Akademie-Verlag, Berlin 1989, ISBN 3-05-000765-6 .
  • with Hans Bandemer : Introduction to Fuzzy Methods. Theory and Applications of Fuzzy Sets. 4th edition. Akademie-Verlag, Berlin 1993, ISBN 3-05-501601-7 .
  • Fuzzy sets and fuzzy logic. Foundations of Application - from a Mathematical Point of View. Vieweg, Braunschweig, Wiesbaden 1993.
  • with Hans Bandemer: Fuzzy sets, fuzzy logic, fuzzy methods: With applications. Wiley, Chichester, et al. a. 1995, ISBN 0-471-95636-8 .
  • A Treatise on Many-Valued Logics. Studies in Logic and Computation, Volume 9, Research Studies Press, Baldock, 2001.


  • with Werner Stelzner; Lothar Kreiser (Ed.): Non-classical logic. An introduction. Akademie-Verlag, Berlin 1988, ISBN 3-05-000274-3 ; 2nd edition 1990, ISBN 3-05-000274-3 .
  • with Herbert Kästner , Manfred Hellwich, Herbert Küstner: Mathematik Ratgeber. German, Thun / Frankfurt am Main 1987, ISBN 3-8171-1004-9 ; as a handbook of mathematics published by Buch und Zeit, Cologne 1986, ISBN 3-8166-0015-8 (abridged version of Kleine Enzyklopädie Mathematik , 1972, ISBN 3-87144-104-X ).
  • with Walter Gellert, Manfred Hellwich, Herbert Kästner, Herbert Küstner: The van Nostrand Concise Encyclopedia of Mathematics. 2nd Edition. Van Nostrand Reinhold, New York 1989.
  • with Hans-Joachim Ilgauds , Karl-Heinz Schlote : Lexicon of important mathematicians. Bibliographisches Institut, Leipzig 1990, ISBN 3-323-00319-5 .
  • with Herbert Kästner, Helmut Rudolph: Meyer's Small Encyclopedia of Mathematics. 14th edition, Meyers Lexikonverlag, Mannheim 1995, ISBN 3-411-07771-9 (formerly in the Bibliographisches Institut, Leipzig, DNB 840247168 ).

Web links

Individual evidence

  1. ^ Obituary on the website of the Institute for Philosophy at the University of Leipzig