This is Greg Restall’s website, with news, writings, links, and bite sized updates. For background look below.

On t and u, and what they can do

“On t and u, and what hey can do” Analysis 70:4 (2010) 673–676.

This paper shows that once we have propositional constants t (the conjunction of all truths) and u (the disjunction of all untruths), paradox ensues, provided you have a conditional in the language strong enough to give you modus ponens. This is an issue for views like those of Jc Beall, Ross Brady, Hartry Field and Graham Priest.

Details

Author: Greg Restall
Status: Published in 2010

Local file: on_t_and_u.pdf (156KB)

Subjects: boolean negation material conditional paradox

About

I’m Greg Restall, and this is my website. I work in Philosophy at the University of Melbourne. Email: greg at consequently.org; Post: School of of Philosophy, Anthropology and Social Inquiry, University of Melbourne, Parkville 3010, Australia.

Start at the home page—a summary of the site. The left column is news, archived on the news archive page. The central column contains recent items from the writing page, which lists my publications. These are also categorised by topic. You can follow my links at my account on delicious and occasional short snarky remarks at @consequently on twitter.

Current CO2 concentration in the atmosphere

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This site is handcoded: I write text in Textmate, and Webby files things in the right place and uploads them to the server. This page was last modified on 2010-11-16 at 12:33AM.

Thought

Dr J. O. Wisdom … once observed to me that he knew people who thought there was no philsophy after Hegel, and others who thought there was none before Wittgenstein; and he saw no reason for excluding the possibility that both were right.
— Ernest Gellner Spectacles & Predicaments.