[Alta-Logic] Peripatetic Seminar Wednesday

[Richard Zach]

Wednesday January 13, 4pm

1253 SS

https://ucalgary.ca/logic/event/2016-01-13/principled-demarcations-logicality-and-permutation-invariance-criterion

Samara Burns (Philosophy)


In logic we can distinguish (at least) two demarcation problems. First, 
there is the problem of demarcating the realm of logic. Second, and 
often related, is the problem of demarcating the logical operators. It 
is often said that a good demarcation should be principled. This 
requires determining some criterion (or a set of criteria) by which we 
can give an answer to one, or both of the demarcation problems. This 
criterion is not meant to be a simple codification of informal 
intuitions about logicality; it should be substantive. Proponents of the 
permutation invariance criterion argue that the logical operators are 
those that are invariant up to isomorphism. The mathematical precision 
of permutation invariance makes it a viable candidate for a principled 
demarcation. I will argue that permutation invariance fails to be 
principled demarcation, as it can be reduced to a mere systematization 
of intuitions.

-- 
Richard Zach ...... http://www.ucalgary.ca/rzach/
Professor,             Department  of  Philosophy
University of Calgary, Calgary AB T2N 1N4, Canada