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  2. De Morgan's laws - Wikipedia

    en.wikipedia.org/wiki/De_Morgan's_laws

    De Morgan's laws represented with Venn diagrams.In each case, the resultant set is the set of all points in any shade of blue. In propositional logic and Boolean algebra, De Morgan's laws, [1] [2] [3] also known as De Morgan's theorem, [4] are a pair of transformation rules that are both valid rules of inference.

  3. De Morgan algebra - Wikipedia

    en.wikipedia.org/wiki/De_Morgan_algebra

    De Morgan algebras are important for the study of the mathematical aspects of fuzzy logic. The standard fuzzy algebra F = ([0, 1], max( x , y ), min( x , y ), 0, 1, 1 − x ) is an example of a De Morgan algebra where the laws of excluded middle and noncontradiction do not hold.

  4. Law (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Law_(mathematics)

    De Morgan's laws: In propositional logic and Boolean algebra, De Morgan's laws, [15] [16] [17] also known as De Morgan's theorem, [18] are a pair of transformation rules that are both valid rules of inference. They are named after Augustus De Morgan, a 19th-century British mathematician.

  5. Z3 Theorem Prover - Wikipedia

    en.wikipedia.org/wiki/Z3_Theorem_Prover

    Leonardo De Moura; Nikolaj Bjørner (2008). "Z3: an efficient SMT solver". Tools and Algorithms for the Construction and Analysis of Systems. 4963: 337– 340. The inner magic behind the Z3 theorem prover

  6. Augustus De Morgan - Wikipedia

    en.wikipedia.org/wiki/Augustus_De_Morgan

    Augustus De Morgan (27 June 1806 – 18 March 1871) was a British mathematician and logician.He is best known for De Morgan's laws, relating logical conjunction, disjunction, and negation, and for coining the term "mathematical induction", the underlying principles of which he formalized. [1]

  7. Union (set theory) - Wikipedia

    en.wikipedia.org/wiki/Union_(set_theory)

    The union of two sets A and B is the set of elements which are in A, in B, or in both A and B. [2] In set-builder notation, = {:}. [3]For example, if A = {1, 3, 5, 7 ...

  8. Conjunctive normal form - Wikipedia

    en.wikipedia.org/wiki/Conjunctive_normal_form

    In Boolean logic, a formula is in conjunctive normal form (CNF) or clausal normal form if it is a conjunction of one or more clauses, where a clause is a disjunction of literals; otherwise put, it is a product of sums or an AND of ORs.

  9. De Morgan - Wikipedia

    en.wikipedia.org/wiki/De_Morgan

    De Morgan or de Morgan is a surname, and may refer to: Augustus De Morgan (1806–1871), British mathematician and logician. De Morgan's laws (or De Morgan's theorem), a set of rules from propositional logic. The De Morgan Medal, a triennial mathematics prize awarded by the London Mathematical Society.