- Birth: 1943 in Limbach (Saxonia)
- Married, two children
- Studied: Mathematics at Leipzig University (Ph. D. 1969)
Habilitation (Leipzig University) 1977
- Actual Position: Chair of Non-classical and Mathematical Logic, Leipzig University
- Many-valued Logic and Fuzzy Logic
- Fuzzy Sets, Fuzzy Relations and Fuzzy Control
- History of Mathematics and Logic
- (Co-)Author/Co-Editor of 11 books and about 100 research papers