نتایج جستجو برای: method of stretching variables
تعداد نتایج: 21280960 فیلتر نتایج به سال:
In this paper we describe how a combination of the classical “universal” E-unification and “rigid”E-unification, called “mixed” E-unification, can be used to efficiently handle equality in universal formula semantic tableaux, that are an extension of free variable tableaux.
Even though higher-order calculi for automated theorem proving are rather old, tableau calculi have not been investigated yet. This paper presents two free variable tableau calculi for higher-order logic that use higher-order uniication as the key inference procedure. These calculi diier in the treatment of the substitutional properties of equivalences. The rst calculus is equivalent in deducti...
implements a rst-order theorem prover based on free-variable semantic tableaux. It is complete, sound, and eecient.
Tableau–Based theorem provers can be extended to cover many of the nonclassical logics currently used in AI research. For both, classical and nonclassical first–order logic, equality is a crucial feature to increase expressivity of the object language. Unfortunately, all so far existing attempts of adding equality to semantic tableaux have been more or less experimental and turn out to be usele...
“prove((E,F),A,B,C,D) :!, prove(E,[F|A],B,C,D). prove((E;F),A,B,C,D) :!, prove(E,A,B,C,D), prove(F,A,B,C,D). prove(all(H,I),A,B,C,D) :!, \+length(C,D), copy_term((H,I,C),(G,F,C)), append(A,[all(H,I)],E), prove(F,E,B,[G|C],D). prove(A,_,[C|D],_,_) :((A= -(B); -(A)=B)) -> (unify(B,C); prove(A,[],D,_,_)). prove(A,[E|F],B,C,D) :prove(E,F,[A|B],C,D).” implements a first-order theorem prover based on...
We present several calculi that integrate equality handling by superposition and ordered paramodulation into a free variable tableau calculus. We prove completeness of this calculus by an adaptation of themodel generation [1, 13] technique commonly used for completeness proofs of resolution calculi. The calculi and the completeness proof are compared to earlier results of Degtyarev and Voronkov...
the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...
some new water-soluble schiff base complexes of na2[m(5-so3-1,2-salophen)].nh2o; (5-so3-1,2-salophen = n,n’-bis(5-sulphosalicyliden)-1,2-phenylendiamine); na2[m(5-so3-2,3-salpyr)(h2o)n].2h2o; (5-so3-2,3-salpyr = n,n’-bis(5-sulphosalicyliden)-2,3-diaminopyridine); and na2[m(5-so3-3,4-salbenz)(h2o)n].nh2o; (5-so3-3,4-salbenz = n,n’-bis(5-sulphosalicyliden)-3,4-diaminobenzophenon); where m = cu, n...
this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
Purpose: Extracorporeal shockwave therapy (ESWT) is a relatively new method in the treatment of musculoskeletal disorders such as plantar fasciitis. This study aimed to compare two methods of treatment with extracorporeal shockwave and stretching in athletes with chronic plantar fasciitis. Methods: The study was a randomized clinical trial. A total of 30 male athletes with chronic plantar fasc...
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