0410303 20240103182204.820060210235959.9 3-87005-053-5 Ulm Aegis 1999 14 s. 3 79-92HitzlerP.KalmbachG. cav_un_auth*0101156 Mareš Milan UTIA-B Ústav teorie informace a automatizace AV ČR, v. v. i. 12A GA402/99/0032 GA ČR cav_un_auth*0009169 IAA1075905 GA AV CZ cav_un_auth*0012796 AV0Z1075907 The calculation with vaguely known quantities was theoretically managed by the theory of fuzzy sets. It is known that algebraical operations, defined by means of its methods, have only some of the classical properties which are valid for the algebra of deterministic (crisp) numbers. It is possible to investigate the roots of this fact and to suggest some concepts which could bridge that gap. BA E http://hdl.handle.net/11104/0130394 UTIA-B 20000019 1999 1999 Ulm Aegis 3-87005-053-5 Begabtenförderung im MINT-Bereich. (Mathematik, Informatik, Naturwissenschaften, Technik) 79 92 Progress in the Field of MINT. (Mathematics, Informatics, Science and Technology) Hitzler P. 340 Kalmbach G. 340