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Tagged with propositions modal-logic
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A question on the belief operator in Doxastic Logic
Let Bp be the statement "it is believed that p".
Why is ~Bp not equivalent to B~p?
in words it amounts of saying that: "it's not believed that p" equivalent to "it's believed ...
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Is division of propositions by their modality comprehensive?
I call division of any concept comprehensive if the combination of concepts received by such division has a scope congruent (containing exactly the same objects) to the scope of the divided concept.
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what is meaning of accessibility of possible worlds?
I have a question about the notion of possibility in modal logic.
There are systems and worlds with this notion.
They say that a world w1 is accessible to an other world w2 if and only if for any true ...
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