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Volume 34, Issue 1
Displaying 1-5 of 5 articles from this issue
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KATSUHIKO SANO, YASUO NAKAYAMA2007 Volume 34 Issue 1 Pages 1-10
Published: March 25, 2007
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThis paper proposes a bimodal logic with an additional modality (called the irreflexive modality), which corresponds semantically to the intersection of the accessibility relation and the inequality. First, we show that we can define, within this framework, several properties that are undefinable in the unimodal language; irreflexivity is one of such properties. Second, with respect to the frame expressivity, we compare our language with the unimodal language and another bimodal language with the difference operator that is studied by de Rijke. Finally, we give a Hilbert-style axiomatization of our logic and prove that certain familiar modal systems, such as S4 and S5, enjoy Kripke completeness in our language.View full abstractDownload PDF (441K) -
Keiichi YAMADA2007 Volume 34 Issue 1 Pages 11-20
Published: March 25, 2007
Released on J-STAGE: February 03, 2010
JOURNAL FREE ACCESSEpistemological contextualism holds that the truth-conditions of knowledge-attributing sentences depend on the contexts in which they are uttered. While Contextualists have presented solutions of the skeptical paradox with reference to this dependence, they are confronted with various criticisms. In this paper, I examine DeRose's solution of skepticism, and then elucidate why it fails to do justice to the persuasiveness of skeptical argument. Finally, as an alternative resolution of radical skepticism, I suggest the position of “radical contextualism” that claims not only standards of knowledge but of epistemic distinction (justification) depend on the context, and illustrate the justification model of radical contextualism in contrast with that of radical skepticism.View full abstractDownload PDF (706K) -
Yuichiro KITAJIMA2007 Volume 34 Issue 1 Pages 21-28
Published: March 25, 2007
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSBell's inequalities in algebraic quantum field theory have been studied by Landau, Summers and Werner, and Halvorson and Clifton. Halvorson and Clifton showed that many normal states on local algebras associated with space-like separated bounded open regions violate Bell's inequalities under the the axioms of algebraic quantum field theory. In the present paper, I point out that many faithful normal states on local algebras associated with space-like separated bounded open regions violate Bell's inequalities under the axioms of algebraic quantum field theory.View full abstractDownload PDF (431K) -
Kunihisa MORITA2007 Volume 34 Issue 1 Pages 29-37
Published: March 25, 2007
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSThere are three received approaches to scientific explanation: causal, unification and pragmatics. However, I will try to highlight the insufficiency of these approaches in this paper, furthermore instead, suggest a new approach: explanation by showing the essence of the phenomena. 'The essence of the phenomena' is what distinguishes the class of phenomena in question from the other classes of phenomena. Therefore, unification surely plays an important role in the scientific explanation, but its role is to clarify the essence of the phenomena.View full abstractDownload PDF (546K) -
[in Japanese], [in Japanese]2007 Volume 34 Issue 1 Pages 39-47
Published: March 25, 2007
Released on J-STAGE: July 31, 2009
JOURNAL FREE ACCESSDownload PDF (586K)
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