Foundations: Essays in Philosophy, Logic, Mathematics, and Economics

adjective arguments assert atomic functions atomic propositions atomic sentences Axiom of Infinity Axiom of Reducibility C₁ Cæsar calculus called causal laws characteristic classes commodities consider consists contain contradiction deduced defined definition degree of belief distinction elementary function equations equivalent existential proposition explain express agreement fact false finite follows formal logic functions in extension functions of functions functions of individuals give given identity income incomplete symbols induction infinite number instance Keynes logical product logical sum marginal utility mathematics meaning merely names not-p objects occur partial belief possible predicative functions primary system Principia Mathematica probability problem propositional function question Ramsey Ramsey's real numbers reason regard relation Russell saving sense sentence simply Socrates is wise solution sort sub-class suppose tautology taxes theorem things tion true truth truth-function truth-possibilities universals values variable hypothetical Wittgenstein