On the Ramsey Test without Triviality

Reason Maintenance and the Ramsey Test ?

The Ramsey test provides an intuitive link between conditionals and belief revision. How easy is it to incorporate a Ramseyaccount of conditionals in a reason maintenance system? In this paper, it is shown that this is indeed possible, within a relevance-logical framework. In addition, it is shown that independently motivated requirements on reason maintenance systems allow us to gracefully cir...

The negative Ramsey test: another triviality result

Belief Revision and the Ramsey Test: A Solution

We offer a solution to the triviality result by Gärdenfors. His result claims that there are no non-trivial belief revision systems which satisfy the AGM postulates and are compatible with the Ramsey Test. We show that this result does no longer apply if we restrict some of the AGM postulates to deal only with the non-conditional part of epistemic states.

Reapproaching Ramsey: Conditionals and Iterated Belief Change in the Spirit of AGM

According to the Ramsey Test, conditionals reflect changes of beliefs: α > β is accepted in a belief state iff β is accepted in the minimal revision of it that is necessary to accommodate α. Since Gärdenfors’s seminal paper of 1986, a series of impossibility theorems (“triviality theorems”) has seemed to show that the Ramsey test is not a viable analysis of conditionals if it is combined with A...

A reason maintenance perspective on relevant Ramsey conditionals

This paper presents a Ramsey account of conditionals within the framework of an implemented reason maintenance system. The reason maintenance system is built on top of a deductive reasoning engine based on relevance logic. Thus, the account of conditionals provided is not susceptible to the fallacies of relevance. In addition, it is shown that independently motivated requirements on practical r...