I propose an account of the metaphysics of the expressions of a mathematical language which brings together the structuralist construal of a mathematical object as a place in a structure, the semantic notion of indexicality and Kit Fine's ontological theory of qua objects. By contrasting this indexical qua objects account with several other accounts of the metaphysics of mathematical expressions, I show that it does justice both to the abstractness that mathematical expressions have because they are mathematical objects and to (...) the element of concreteness that they have because they are also used as signs. In a concluding section, I comment on the pragmatic element that has entered ontology by way of the notion of indexicality and use it to give an answer to a question Stewart Shapiro has recently posed about the status of meta-mathematics in the structuralist philosophy of mathematics. (shrink)

Dieser Band versammelt Beiträge zu den drei klassischen Disziplinen der Philosophie – dem Wahren, dem Guten, dem Schönen. Ihre Autoren zeichnet aus, dass sie aus dem akademischen Umfeld Michael Sukales zu seiner Zeit am Institut für Philosophie an der Carl-von-Ossietzky-Universität Oldenburg stammen. Ihm ist dieses Buch zum Abschied von seiner aktiven Lehrtätigkeit in Oldenburg gewidmet. Die thematische Vielfalt der enthaltenen Texte spiegelt die Bandbreite seines philosophischen Schaffens wider.