Philosophy Dictionary of Arguments  
 
Modal Operators: modal operators are symbols for expressing possibility and necessity. These operators do not belong to classical logic, but fall into the field of modal logic. Their placement at the beginning or in the course of formulas determines the relative strength of statements that can be obtained from the interpretation of these formulas. See also range, stronger/weaker, modal logic, possible worlds. _____________ Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.  
Author  Item  More concepts for author  

Cresswell, Maxwell J.  Modal Operators  Cresswell, Maxwell J.  
Field, Hartry  Modal Operators  Field, Hartry  
Montague, Richard  Modal Operators  Montague, Richard  
