display all the ideas for this combination of philosophers
4 ideas
8309 | A set is a 'number of things', not a 'collection', because nothing actually collects the members [Lowe] |
9986 | The null set was doubted, because numbering seemed to require 'units' [Tait] |
8322 | I don't believe in the empty set, because (lacking members) it lacks identity-conditions [Lowe] |
9984 | We can have a series with identical members [Tait] |