6 ideas
9560 | S5 provides the correct logic for necessity in the broadly logical sense [Fine,K] |
18170 | The Axiom of Reducibility is self-effacing: if true, it isn't needed [Quine] |
10580 | Mathematics is both necessary and a priori because it really consists of logical truths [Yablo] |
10579 | Putting numbers in quantifiable position (rather than many quantifiers) makes expression easier [Yablo] |
10577 | Concrete objects have few essential properties, but properties of abstractions are mostly essential [Yablo] |
10578 | We are thought to know concreta a posteriori, and many abstracta a priori [Yablo] |