Craig Interpolation Theorem for Classical Propositional Logic with some Probability Operators
Nebojša Ikodinović (2001)
Publications de l'Institut Mathématique
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Nebojša Ikodinović (2001)
Publications de l'Institut Mathématique
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Stewart, James, Watson, Saleem (1986)
International Journal of Mathematics and Mathematical Sciences
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Josep Pla Carrera (1979)
Stochastica
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In the Lewis and Langford formalization of system S1 (1932), besides the deduction rules, the substitution rules are as well used: the uniform substitution and the substitution of strict equivalents. They then obtain systems S2, S3, S4 and S5 adding to the axioms of S1 a new axiom, respectively, without changing the deduction rules. Lemmon (1957) gives a new formalization of systems S1-S5, calling them P1-P5. Is is worthwhile to remark that in the formalization of P2-P5 one does not...
Guliyev, Emin V., Mammadov, Yagub Y. (2010)
Abstract and Applied Analysis
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Cho, Nak Eun, Patel, J., Mohapatra, G.P. (2002)
International Journal of Mathematics and Mathematical Sciences
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A. D. Gadjiev, R. O. Efendiyev, E. Ibikli (2003)
Czechoslovak Mathematical Journal
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It is shown that a Korovkin type theorem for a sequence of linear positive operators acting in weighted space does not hold in all this space and is satisfied only on some subspace.
Swamy, S.R. (2006)
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
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