display all the ideas for this combination of texts
4 ideas
17587 | The 'Law' of Excluded Middle needs all propositions to be definitely true or definitely false [Inwagen] |
17558 | Variables are just like pronouns; syntactic explanations get muddled over dummy letters [Inwagen] |
17583 | There are no heaps [Inwagen] |
9117 | The smallest heap has four objects: three on the bottom, one on the top [Hart,WD, by Sorensen] |