The paper aims to characterise the proper subject matter of ontology by drawing the boundary line between ontological and non-ontological categories. The account of ontological categories I sketch here defines them as equivalence classes of a certain family of equivalence relations that are determined by ontological relations. As a result, the demarcation problem for ontological categories turns out to be dependent on the demarcation problem for ontological relations.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 email@example.com
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 firstname.lastname@example.org