| Re: Is the statement "If 2+2=5 then 1+1=2" true or should the antecedent be questioned? |
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Group: alt.philosophy · Group Profile
Author: Aatu KoskensiltaAatu Koskensilta Date: Apr 5, 2008 04:38
On 2008-04-05, in sci.logic, Michael Gordge wrote:
> When someone talks of a Jersey cow, Swiss brown cow, Holstein Friesian
> cow, Hereford cow, the meaning of "cow" doesn't change from being, "a
> large female mammal / animal" just because its preceded by an
> adjective, soooo, when you say "different logics are studied" what
> meaning are you giving to logic?
Just the usual, in context of mathematical logic and philosophy. By a
logic we mean some systematised body of logical principles and modes
of reasoning, justified on basis of the concepts involved. In
mathematical logic in particular logics are usually presented in the
form of formal calculi.
--
Aatu Koskensilta (aatu.koskensilta@xortec.fi)
"Wovon man nicht sprechen kann, daruber muss man schweigen"
- Ludwig Wittgenstein, Tractatus Logico-Philosophicus
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