7 ideas
7848 | Philosophy begins in the horror and absurdity of existence [Nietzsche, by Ansell Pearson] |
10163 | Propositional modal logic has been proved to be complete [Kripke, by Feferman/Feferman] |
10760 | With possible worlds, S4 and S5 are sound and complete, but S1-S3 are not even sound [Kripke, by Rossberg] |
16189 | The variable domain approach to quantified modal logic invalidates the Barcan Formula [Kripke, by Simchen] |
15132 | The Barcan formulas fail in models with varying domains [Kripke, by Williamson] |
13095 | Essence is primitive force, or a law of change [Leibniz] |
2117 | The connection in events enables us to successfully predict the future, so there must be a constant cause [Leibniz] |