Frege, Boolos, and Logical Objects

∗This paper was published in the Journal of Philosophical Logic, 33/1 (2004): 1–26. The authors would like to thank C.A. Anderson, Thomas Hofweber, Jeffrey Kegler, and Kai Wehmeier for their comments on this paper. The paper was presented in its current form at the Seminar für Philosophie, Logik, und Wissenschaftstheorie, Universität München. We gratefully acknowledge the audience feedback. †An earlier, uncoauthored version of this paper was presented at the following places: Australasian Association of Philosophy meetings in Auckland, Philosophy Department at Indiana University, and the Workshop on the Philosophy of Mathematics at Fitzwilliam College (Cambridge University). I’d like to thank the members of those audiences who offered comments. David J. Anderson and Edward N. Zalta 2