[Alta-Logic] Re: [Vendler-group-l] Peripatetic Seminar Wednesday

[John Baker]

My regrets. I am teaching at that time.

John


On Jan 12, 2016, at 8:47 AM, Richard Zach <rzach at ucalgary.ca<mailto:rzach at ucalgary.ca>> wrote:


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

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John A. Baker, D.Phil.,
Department of Philosophy,
University of Calgary,
Calgary, Alberta,
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