ACADEMIC INTERESTS

 
 Vagueness and Dynamics
 
 I have studied philosophical topics of vagueness in terms 
 of dynamics. Proposing my own position: dynamic semantics, 
 I have investigated logic and philosophy of vagueness. Though 
 it is well known that it is defficult to give a consistent 
 and adequate semantics for vague predicates, my main interest 
 is to give a natural and formal semantics as much as possible.

 Logic of Strict Implication
 
 I have studied a so-called logic of strict implication. It 
 is a logic that captures a natural or relevant concept of 
 "implication" in deductive logic. I have studied it from a 
 historical and formal point of view. Thus, I am maily 
 interested in a connection between C. I. Lewis' original 
 logic and contemporary relevant and paraconsistent logic. 

 Theory of Truth and Judgment
 
 While philosophical arguments on truth are currently very 
 vigorous, a theory of judgment is regarded as an old-
 fashioned area in philosophy. However I have investigate 
 a substantial theory of truth in respect to a theory of 
 jedgment. Thus I have atempted to build a unified theory 
 of truth and judgment. The theory would cover a wide rage 
 of phisolophy: theorethical and practical one.