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### Example

### Reading

Rod Girle [2000] *Modal Logics and Philosophy* Chapter 2

You can make a reasonable start here by thinking about how truth tables might work once there are the modal operators, necessary □ and possible ◊.

To remind ourselves, ordinary truth tables are filled out as follows. [What we are doing here is taking a random ordinary propositional formula, say ~A⊃B then valuing the atomic propositions in it to get, perhaps, ~True⊃False which is abbreviated ~T⊃F and then you are being asked to fill out the values for the connectives, in this case you will get FTTF.]

#### Truth Table Applet [Single Line]

#### Modal 'Truth Table Applet' [Single Line]