Suppose we are evaluating $\square p$, $\diamondsuit$p, $\square\square$p, $\diamondsuit\diamondsuit$p, $\square$$\diamondsuit$p, $\diamondsuit$$\square$p on a dead end world (the world that can't reach any further worlds). Are all of these trivially true or are some of them false, and if so, why? Thanks in advance.
2026-02-22 14:39:13.1771771153
Necessity and sufficiency on dead end worlds in Kripke's model
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