8 ideas
13831 | Logic is based on transitions between sentences [Prawitz] |
13827 | Logical consequence isn't a black box (Tarski's approach); we should explain how arguments work [Prawitz] |
13825 | Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz] |
13823 | In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz] |
13826 | Model theory looks at valid sentences and consequence, but not how we know these things [Prawitz] |
16700 | In order to speak about time and successive entities, the 'present' must be enlarged [Wycliff] |
16701 | To be successive a thing needs parts, which must therefore be lodged outside that instant [Wycliff] |
6005 | Animals are dangerous and nourishing, and can't form contracts of justice [Hermarchus, by Sedley] |