====== XEP33FLO Fuzzy Logic ====== === News === * The latest news will be here. * In the summer semester 2025/26, the course will be held in English. Lectures will be in Dejvice, JP3:B-633 (Jugoslávských partyzánů 3, building B - the lower one), entrance closer to the square (not to the canteen), on the 6th floor; you will probably have to wait in front of the door. The course will take place each Monday, 11:00-12:30, starting on February 16. A shift of up to 15 minutes is possible. * The lectures will be available also online using BigBlueButton (BBB) Open Source software; [[https://youtu.be/uYYnryIM0Uw|Tutorial video for students]]. The connection can be found in Brute -> Conference Rooms or using the following links: XEP33FLO_1 - Scope: 1 - Mon 11:00 - 12:30, Planed on:16.2.2026 10:45, duration: 120 Invitation link for all students/teachers at CTU: https://cw.felk.cvut.cz/brute/bbb/course/cw_S1h85iRC1Z \\ Invitation link for non-CTU users: https://cw.felk.cvut.cz/bbb/course/cw_S1h85iRC1Z * The curricula will contain a general introduction to fuzzy sets (about 5 weeks), followed by lectures on specific topics chosen by you from several options. Please, read the previous curricula and prepare your comments. === Links === *[[https://cw.felk.cvut.cz/brute/|BRUTE]] *[[https://cmp.felk.cvut.cz/~navara/fl/|Lecture notes and other supporting material]] === Curricula === == Fuzzy sets == * Basic notions. System of cuts of a fuzzy set, theorem on representation of fuzzy sets by cuts, conversion between vertical and horizontal representation. * Fuzzy inclusion. Fuzzy negations. Representation theorem for fuzzy negations. * Fuzzy complements. Fuzzy conjunctions (triangular norms). * Representation theorem for strict conjunctions. Representation theorem for nilpotent conjunctions. Fuzzy disjunctions (triangular conorms), representation theorems. Fuzzy algebras and their properties. Examples of fuzzy intersections and unions. * Fuzzy disjunctions, representation theorems. Examples of fuzzy intersections and unions. Properties of fuzzy propositional and set operations. * Fuzzy implications and biimplications. == Probability of fuzzy events == * Alternative definition of a sigma-algebra and probability on it. * Comparison to the Kolmogorov axiomatization of probability. * Fuzzifications of sigma-algebras. * Properties of fuzzy sigma-algebras. * Motivation and definitions of probabilities of fuzzy events. * Properties and characterizations of probabilities of fuzzy events. == Fuzzy logic == * Syntax of classical logic: formulas, axioms, deduction, theorems. * Deduction theorem in classical logic. * Semantics of classical logic: evaluation, tautologies. Interplay of syntax and semantics of classical logic: soundness, completeness. * Basic logic: axioms, theorems, semantics. * Deduction in basic logic. * Completeness of basic logic. * Other types of fuzzy logics: Gödel logic, product logic (its alternative axiomatization, formulas which are tautologies of product logic but not of Gödel or basic logic), Łukasiewicz logic and its alternative axiomatization. * Rational Pavelka logic. * Compactness of logics. * Testing tautologies in Gödel and Łukasiewicz logic. == Quantum logic ==