Several justification logics have evolved, starting with the logic LP, (Artemov 2001). These can be thought of as explicit versions of modal logics, or logics of knowledge or belief, in which the unanalyzed necessity (knowledge, belief) operator has been replaced with a family of explicit justification terms. Modal logics come in various strengths. For their corresponding justification logics, ...

Several justification logics have evolved, starting with the logic LP, [2]. These can be thought of as explicit versions of modal logics, or logics of knowledge or belief in which the unanalyzed necessity operator has been replaced with a family of explicit justification terms. Modal logics come in various strengths. For their corresponding justification logics, differing strength is reflected ...