7 ideas
9987 | An aggregate in which order does not matter I call a 'set' [Bolzano] |
10856 | A truly infinite quantity does not need to be a variable [Bolzano] |
23647 | Objects have an essential constitution, producing its qualities, which we are too ignorant to define [Reid] |
14289 | There are some assertable conditionals one would reject if one learned the antecedent [Jackson, by Edgington] |
11958 | Impossibilites are easily conceived in mathematics and geometry [Reid, by Molnar] |
23646 | Reference is by name, or a term-plus-circumstance, or ostensively, or by description [Reid] |
23645 | A word's meaning is the thing conceived, as fixed by linguistic experts [Reid] |