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Cylindric Modal Logic - Homepages of UvA/FNWI staff
Cylindric Modal Logic - Homepages of UvA/FNWI staff

Properties of maximal cliques of a pair-wise compatibility graph for three nonmonotonic reasoning system
Properties of maximal cliques of a pair-wise compatibility graph for three nonmonotonic reasoning system

... bounded by a polynomial in the size of the number of rules. Of course, Property 1 concerns cliques, not stable models (resp. answer sets, extensions). The property does not consider that the logic program (resp. default theory) may have integrity constraints or that the filter may contain rules that ...
Suszko`s Thesis, Inferential Many-Valuedness, and the
Suszko`s Thesis, Inferential Many-Valuedness, and the

... and 1930s and is now a fully established and flourishing research program, see, for instance, [22] and [26]. In the 1970s, however, the prominent logician Roman Suszko called into question the theoretical foundations of manyvalued logic. Suszko distinguishes between the logical values truth and fals ...
Knowledge Representation and Reasoning
Knowledge Representation and Reasoning

... Many systems of propositional logic have been developed. In this lecture we are studying classical — i.e. the best established — propositional logic. In classical propositional logic it is taken as a principle that: ...
TOWARDS A MENTAL PROBABILITY LOGIC Niki PFEIFER
TOWARDS A MENTAL PROBABILITY LOGIC Niki PFEIFER

... operators of negation, conjunction, and disjunction. There is no logical operator of conditioning. “Logic lacks a conditioning operator corresponding to conditional probability” (Goodman et al., 1991). This is a fundamental property (Lewis triviality result), that distinguishes conditioning from mat ...
Document
Document

... •  If the premises are p1 ,p2, …,pn and the conclusion is q then (p1 ∧ p2 ∧ … ∧ pn ) → q is a tautology. •  Inference rules are all arguments in simple argument forms that will be used to construct more complex argument forms. ...
F - Teaching-WIKI
F - Teaching-WIKI

... • Logic is used to formalize deduction • Deduction = derivation of true statements (called conclusions) from statements that are assumed to be true (called premises) • Natural language is not precise, so the careless use of logic can lead to claims that false statements are true, or to claims that a ...
Lecture - 04 (Logic Knowledge Base)
Lecture - 04 (Logic Knowledge Base)

First-Order Logic, Second-Order Logic, and Completeness
First-Order Logic, Second-Order Logic, and Completeness

... content cannot escape the rigorous logical form.19 This thought can certainly be found in the Begriffsschrift itself already. I take this thought to be of general importance: We are looking for formal systems which axiomatize, characterize, or formalize in some other way some notion, or notions, in s ...
PDF
PDF

Bilattices and the Semantics of Logic Programming
Bilattices and the Semantics of Logic Programming

... traditional one has been classical two-valued ([1], [21]). This is very satisfactory when negations are not allowed in clause bodies. A three-valued semantics has been urged ([7], [8], [17], [18]) as a way of coping with the problems of negation. Also the two valued semantics has been extended via t ...
The Expressive Power of Modal Dependence Logic
The Expressive Power of Modal Dependence Logic

Department of Mathematics, Jansons Institute of Technology
Department of Mathematics, Jansons Institute of Technology

... After Atanassov [1] introduced the concept of ‘intuitionistic fuzzy sets’ as a generalisation of fuzzy sets, it became a popular topic of investigation in the fuzzy set community. Many mathematical advantages of intuitionistic fuzzy sets have been discussed. Coker [2] generalised topological structu ...
Equivalence of the information structure with unawareness to the
Equivalence of the information structure with unawareness to the

Skeptical Reasoning in FC-Normal Logic Programs is Π1 1
Skeptical Reasoning in FC-Normal Logic Programs is Π1 1

... of the collection of ground atomic statements of L is a model of the above clause if whenever it contains the ai ’s, it also contains c. It is a model of the program if it is a model of every clause of the program.) A program clause is an expression of the form c ← a1 , . . . , am , not b1 , . . . , ...
Linear Logic 15-819K: Logic Programming Lecture 12 Frank Pfenning
Linear Logic 15-819K: Logic Programming Lecture 12 Frank Pfenning

āgārjuna’s Logic N 8 8.1  N
āgārjuna’s Logic N 8 8.1 N

... of b and b is b, we have it that ν(B ¬B) = b. Further, it follows from our supposition that ν(¬A) = f. Since the least upper bound of b and f is b, we have it that ν(¬A (B ¬B)) = b. But that’s equivalent to (A ⊃ (B ¬B), and so our premise is designated. But ν(¬A) = f, which is undesignated. So we ha ...
review and analysis of different methodologies used in mobile robot
review and analysis of different methodologies used in mobile robot

... respond to human supplied commands such as “Follow the corridor and turn right at the second T junction” is achieved by an ensemble of neural networks whose activation and deactivation are controlled by a supervisory controller that is rule-based. Glasius, Komoda, and Stan (1994) have proposed a mod ...
Coordinate-free logic - Utrecht University Repository
Coordinate-free logic - Utrecht University Repository

On Decidability of Intuitionistic Modal Logics
On Decidability of Intuitionistic Modal Logics

Can Modalities Save Naive Set Theory?
Can Modalities Save Naive Set Theory?

... the qualification “in a special way”. One example is fictionalism, which will be discussed below. For another example, we can understand in a special way as determinately. To motivate this idea, consider an analogy to philosophical discussions of truth. Those who wish to preserve classical logic in ...
Discrete Mathematics
Discrete Mathematics

... A propositional variable (lowercase letters p, q, r) is a proposition. These variables model true/false statements. The negation of a proposition P, written ¬ P, is a proposition. The conjunction (and) of two propositions, written P ∧ Q, is a proposition. The disjunction (or) of two propositions, wr ...
On the Learnability of Description Logic Programs
On the Learnability of Description Logic Programs

... restrictions, which allow to quantify the amount of indeterminism of these relations. However, up to now there are neither practical nor theoretical results concerning learning the Carin-ALN language. This paper is intended to close this gap, by showing how Carin-ALN learning can be embedded into f ...
The Commutative/Noncommutative Linear Logic BV
The Commutative/Noncommutative Linear Logic BV

... contains some more details on the proof theory developed for and around BV. It turns out that in order to deal with BV we have to change rather deeply our prooftheoretic methods. In fact, despite its simplicity, BV goes beyond what Gentzen’s proof theory [10] can handle. On the other hand, the proof ...
From Syllogism to Common Sense Normal Modal Logic
From Syllogism to Common Sense Normal Modal Logic

... Some More Modal frege systems ‣ Hilbert systems for other modal logics are obtained by adding axioms. ...
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Fuzzy logic



Fuzzy logic is a form of many-valued logic in which the truth values of variables may be any real number between 0 and 1. By contrast, in Boolean logic, the truth values of variables may only be 0 or 1. Fuzzy logic has been extended to handle the concept of partial truth, where the truth value may range between completely true and completely false. Furthermore, when linguistic variables are used, these degrees may be managed by specific functions.The term fuzzy logic was introduced with the 1965 proposal of fuzzy set theory by Lotfi A. Zadeh. Fuzzy logic has been applied to many fields, from control theory to artificial intelligence. Fuzzy logic had however been studied since the 1920s, as infinite-valued logic—notably by Łukasiewicz and Tarski.
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