New SEP entries: Bolzano’s Logic, Frege v. Hilbert

Two new entries in the Stanford Encyclopedia just went on-line, brought to you by the authors and your friendly neighborhood History of Logic subject editors:

Bolzano’s logic, by Jan Sebestik
The Frege-Hilbert controversy, by Patricia Blanchette

Also interesting: Facts, by Kevin Mulligan and Fabrice Correia

Logic of Conditionals

New SEP entry on conditionals by Horacio Arlo-Costa:

This article provides a survey of recent work in conditional logic. Three main traditions are considered: the one dealing with ontic models, the one focusing on probabilistic models and the one utilizing epistemic models of conditionals.

Combining Logics

New SEP entry on Combining Logics by Walter Carnielli and Marcelo Esteban Coniglio:

The subject of combinations of logics is still a young topic of contemporary logic. Besides the pure philosophical interest offered by the possibility of defining mixed logic systems in which distinct operators obey logics of different nature, there exist also many pragmatical and methodological reasons for considering combined logics. In fact, the use of formal logic as a tool for knowledge representation in Computer Science frequently requires the integration of several logic systems into a homogeneous environment. Important questions in the philosophy of logic such as: “why there are so many logics instead of just one?”(or even, instead of none), as e.g., raised in Epstein 1995, can be naturally counterposed by several other questions: if there are indeed many logics, are they excluding alternatives, or are they compatible? Is it possible to combine different logics into coherent systems with the purpose of using them in applications and to shed some light on the properties of complex logics? Moreover, if we can compose logics, why not decompose them? And, if a logic is decomposed into elementary sublogics, is it possible to recover it by combining such fragments? What kind of properties of logics can be transferred to their combinations? Questions of this kind have been only partially tackled in the literature, and reflect challenges to be confronted in the evolution of this topic.

CfP: Society for Exact Philosophy 2008

Call for Papers

The Society for Exact Philosophy invites submission of papers for the 36th annual S.E.P. conference to be held at the University of Wyoming in Laramie, Wyoming. May 13-17, 2008.

Keynote speakers:
George Bealer (Yale),
Charles Chihara (Berkeley),
Graeme Forbes (Colorado).

Conference organizer: Prof. Mark Moffett (Wyoming).

Paper submissions in all areas of analytic philosophy are welcomed.

Paper submission deadline: January 31st, 2008.

“The SEP is dedicated to providing sustained discussion among researchers who believe that rigorous methods have a place in philosophical investigations.” Information on the Society and its previous meetings is on the web at

Conference website:

Submission Instructions

Authors are requested to submit their papers according to the following guidelines: 1) Papers should be prepared for blind refereeing, 2) put into PDF file format, and 3) sent as an email attachment to the address given below — where 4) the subject line of the submission email should include the key-phrase “SEP submission”, and 5) the body text of the email message should constitute a cover page for the submission by including i) return email address, ii) author’s name, iii) affiliation, iv) paper title, and v) short abstract.

Electronic submissions should be sent to

Nota Bene: All submissions will receive email confirmation of receipt. If your submission does not soon result in such an email confirmation, please send an inquiry either to the above address or to the local organizer.


You should plan on having 40 minutes presentation time. We suppose this to be the principle guide in judging the length of the paper you send. It is the norm at SEP meetings for speakers to present rather than read their papers (and this is a virtue), so it is to be expected that presentation time and page length will only loosely correlate.

That said, do please bear in mind that a referee needs to both grasp the content of your paper and be able to readily envisage how you could present it in the available time. So, if your paper runs long, you might for this reason what to prep a shortened version.

(If you prefer a page number specification to this human guideline: fifteen double-spaced pages is a common norm for forty minute talks.)