more from M Fitting/R Mendelsohn

### Single Idea 9745

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

Full Idea

The system B has the 'reflexive' and 'symmetric' conditions imposed on its accessibility relation - that is, every world must be accessible to itself, and any relation between worlds must be mutual.

Gist of Idea

The system B has the 'reflexive' and 'symmetric' conditions 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