Charles B. Cross - Professor of Philosophy - University of Georgia

Department of Philosophy

 Charles B. Cross

Professor of Philosophy and
Faculty Fellow of the University of Georgia Institute for Artificial Intelligence

External Member of the Munich Center for Mathematical Philosophy

University of Pittsburgh (Ph.D.) 
Office: Peabody 101A
Phone: (706) 542-2653
mailing address:
Department of Philosophy
Peabody Hall
290 South Jackson Street
University of Georgia
Athens, GA 30602-1627, USA
Office Hours, January 6 to May 2, 2014: Tuesdays 11:00am-noon, Wednesdays 2:00-3:00pm, and by appointment.

My office is a Safe Space.


PHIL 2020H Logic and Critical Thinking (Honors), Spring 2014

PHIL(LING) 4520/6520 Model Theory, Spring 2014

  • Meets Wednesdays 9:05-11:50am.
  • A course in the semantic metatheory of classical sentential and predicate logic. The course will be of interest to graduate and advanced undergraduate students in philosophy, artificial intelligence, linguistics, cognitive science, computer science, and math education.
  • We will prove soundness, completeness, and related results for classical sentential logic and predicate logic. We will prove these results for the Fitch-style natural deduction systems of sentential and predicate logic covered in PHIL(LING) 4510/6510.
  • Time permitting, we may cover an additional advanced topic in philosophical logic.
  • No text (handouts only).
  • Written work will consist of weekly homework assignments and a cumulative final exam.
  • For both graduates and undergraduates, the prerequisite is PHIL(LING) 4510/6510 or equivalent preparation. If you have not taken PHIL(LING)4510/6510, please check with me and I will be happy to talk with you about whether your background is sufficient.

  • Research

    Selected Publications

    Each link provided below allows a paper to be downloaded from the website of the relevant publisher. If you use one of these links and the publisher's website does not recognize your institution's online subscription, it may be necessary for you to access the paper online via a different gateway. If you do not have access to an online subscription, you are welcome to ask me for a copy of the paper.

    Abstracts (and additional links) for many of the journal articles listed below can be found on

    I have a Google Scholar profile.

    My Erdös Number is 4.

    Teaching Interests

    I regularly teach PHIL 2500 Symbolic Logic, PHIL(LING) 4510/6510 Deductive Systems, PHIL(LING) 4520/6520 Model Theory, and PHIL 8500 Seminar in Problems of Logic. I occasionally teach PHIL 3610 Theory of Knowledge, PHIL(LING) 8300 Seminar in the Philosophy of Language, and PHIL 8600 Seminar in Metaphysics.

    I am interested in directing graduate student research in metaphysics, epistemology, and philosophical logic. Possible topics include ontology, the metaphysics of modality, essentialism, the essentiality of origins, conditionals, epistemic logic, belief revision, and logics for artificial intelligence. Prospective graduate students interested in working with me are invited to apply to the Ph.D. Program in Philosophy, the M.A. Program in Philosophy, or the M.S. Program in Artificial Intelligence. Joint enrollment for the M.S. in Artificial Intelligence and the M.A. or Ph.D. in Philosophy is possible and represents a unique opportunity for prospective graduate students interested in logic and its applications.

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    Revised: April 18, 2014.

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    Curriculum vitae (password available upon request)