Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   JOURNAL OF PHILOSOPHICAL THEOLOGICAL RESEARCH   SPRING 2008 , Volume 9 , Number 3 (35); Page(s) 69 To 88.
 
Paper: 

VALIDITY IN POSSIBLE WORLDS

 
 
Author(s):  FALAHI A.A., NABAVI L.A.
 
* 
 
Abstract: 

Modal Logic's theorems and rules are valid in possible worlds but Relevant Logic's theorems and rules are valid, respectively, in logical worlds and situations. Robert Meyer in 1974 removed this asymmetry between the theorems and the rules of Relevant Logic by establishing a logical system, whose theorems and rules are valid in all situations. Introducing a new kind of truth and falsity operators, the authors in this article sketch a logical system defined on the basis of Relevant Logic. Such a system can not only preserve symmetry, but also remove some inconsistency between Modern Classical Logic and Relevant Logic, because the latter, like the former, puts possible worlds as a criterion for validity.

 
Keyword(s): RELEVANT LOGIC, TRUTH-PRESERVING, POSSIBLE WORLD, SITUATION, THE LOGIC PWR
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 56
 
Latest on Blog
Enter SID Blog