more from M Fitting/R Mendelsohn

### Single Idea 9746

#### [catalogued under 4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / e. System K4]

Full Idea

The system K4 has the 'transitive' condition imposed on its accessibility relation - that is, if a relation holds between worlds 1 and 2 and worlds 2 and 3, it must hold between worlds 1 and 3. The relation carries over.

Gist of Idea

The system K4 has the 'transitive' condition on its accessibility relation

Source

M Fitting/R Mendelsohn (First-Order Modal Logic [1998], 1.8)

Book Reference

Fitting,M/Mendelsohn,R: 'First-Order Modal Logic' [Synthese 1998], p.19