Een introductie op de discussie over de rechtvaardigheid van een basisinkomen tussen Philippe van Parijs en Stuart White. Belangrijkste discussie punt de positie van wederkerigheid in een...Show moreEen introductie op de discussie over de rechtvaardigheid van een basisinkomen tussen Philippe van Parijs en Stuart White. Belangrijkste discussie punt de positie van wederkerigheid in een rechtvaardiging van redistributie van middelen.Show less
Among philosophically relevant logical results Zermelo’s semi-categoricity theorem has received little to no attention. This is notwithstanding the fact that the present-day canonical foundation of...Show moreAmong philosophically relevant logical results Zermelo’s semi-categoricity theorem has received little to no attention. This is notwithstanding the fact that the present-day canonical foundation of mathematics, that is first-order Zermelo-Fraenkel set theory, fails horribly at unambiguous denotation. The aim of the present study is to offer a reasonably self-contained and modern presentation of Zermelo’s theorem that is accessible also to a philosopher with some knowledge of elementary set- and model theory. In a modern framework semi-categoricity cannot be interpreted as a result on first order models. Using full second-order models one salvages external, or ‘true’, semi-categoricity, although one then loses a sound and complete deductive calculus. With Henkin semantics one does have completeness, but retains only internal semi-categoricity.Show less
