This is a preview. Log in through your library . Abstract We prove the following surprising property of Heyting's intuitionistic propositional calculus, IpC. Consider the collection of formulas, φ, ...

This is a preview. Log in through your library . Abstract The manipulations of the propositional calculus (and the analogous Boolean algebra) have recently become of fundamental importance in fields ...

when thinking about logical agents, we imagine that the agent has a knowledge base (KB for short) that contains logical sentences that describe the state of the world you could think of a KB as a ...

The D[P] hierarchy is completely comprehensive, in that it encompasses the entire universe of propositional formulae. All Boolean concepts fall into a family that appears somewhere in (the infinite ...

This course is compulsory on the BSc in Philosophy and Economics, BSc in Philosophy, Logic and Scientific Method, BSc in Philosophy, Politics and Economics, BSc in Philosophy, Politics and Economics ...