Nothing but the Truth

Journal of Philosophical Logic 42 (1):125-135 (2013)
A curious feature of Belnap’s “useful four-valued logic”, also known as first-degree entailment (FDE), is that the overdetermined value B (both true and false) is treated as a designated value. Although there are good theoretical reasons for this, it seems prima facie more plausible to have only one of the four values designated, namely T (exactly true). This paper follows this route and investigates the resulting logic, which we call Exactly True Logic.
Keywords Relevant logic  First degree entailment  Belnap’s four-valued logic  De Morgan lattices  In- and overcomplete data
Categories (categorize this paper)
DOI 10.1007/s10992-011-9215-1
 Save to my reading list
Follow the author(s)
My bibliography
Export citation
Find it on Scholar
Edit this record
Mark as duplicate
Revision history Request removal from index
Download options
PhilPapers Archive

Upload a copy of this paper     Check publisher's policy on self-archival     Papers currently archived: 22,720
External links
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
Through your library
References found in this work BETA
Siegfried Gottwald (2008). Many-Valued Logic. Stanford Encyclopedia of Philosophy.

View all 6 references / Add more references

Citations of this work BETA

Add more citations

Similar books and articles
Fred Seymour Michael (2002). Entailment and Bivalence. Journal of Philosophical Logic 31 (4):289-300.

Monthly downloads

Added to index


Total downloads

34 ( #127,669 of 1,937,242 )

Recent downloads (6 months)

1 ( #457,335 of 1,937,242 )

How can I increase my downloads?

My notes
Sign in to use this feature

Start a new thread
There  are no threads in this forum
Nothing in this forum yet.