Frege, Boolos, and Logical Objects

@article{Anderson2004FregeBA,
  title={Frege, Boolos, and Logical Objects},
  author={David J. Anderson and Edward N. Zalta},
  journal={Journal of Philosophical Logic},
  year={2004},
  volume={33},
  pages={1-26}
}
In this paper, the authors discuss Frege's theory of “logical objects” (extensions, numbers, truth-values) and the recent attempts to rehabilitate it. We show that the ‘eta’ relation George Boolos deployed on Frege's behalf is similar, if not identical, to the encoding mode of predication that underlies the theory of abstract objects. Whereas Boolos accepted unrestricted Comprehension for Properties and used the ‘eta’ relation to assert the existence of logical objects under certain highly… 

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