18 ideas
9108 | From an impossibility anything follows [William of Ockham] |
15842 | An ad hominem refutation is reasonable, if it uses the opponent's assumptions [Harte,V] |
9107 | A proposition is true if its subject and predicate stand for the same thing [William of Ockham] |
16300 | Ockham had an early axiomatic account of truth [William of Ockham, by Halbach] |
15841 | Mereology began as a nominalist revolt against the commitments of set theory [Harte,V] |
9106 | The word 'every' only signifies when added to a term such as 'man', referring to all men [William of Ockham] |
9113 | Just as unity is not a property of a single thing, so numbers are not properties of many things [William of Ockham] |
9110 | The words 'thing' and 'to be' assert the same idea, as a noun and as a verb [William of Ockham] |
15858 | Traditionally, the four elements are just what persists through change [Harte,V] |
15388 | Universals are single things, and only universal in what they signify [William of Ockham] |
15848 | Mereology treats constitution as a criterion of identity, as shown in the axiom of extensionality [Harte,V] |
15837 | What exactly is a 'sum', and what exactly is 'composition'? [Harte,V] |
15839 | If something is 'more than' the sum of its parts, is the extra thing another part, or not? [Harte,V] |
15838 | The problem with the term 'sum' is that it is singular [Harte,V] |
9109 | If essence and existence were two things, one could exist without the other, which is impossible [William of Ockham] |
14286 | In nearby worlds where A is true, 'if A,B' is true or false if B is true or false [Stalnaker] |
14285 | A possible world is the ontological analogue of hypothetical beliefs [Stalnaker] |
9105 | Some concepts for propositions exist only in the mind, and in no language [William of Ockham] |