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Results tagged with logic
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user 24697
Use this tag for general questions about logic that are not categorizable under some more specific tag, like "mathematical logic", "informal logic", "classical logic", etc.
2
votes
1
answer
103
views
introduction to modal logic
I am not entirely sure if we are allowed to ask such questions here but I was wondering if anyone could suggest me a real introductory level textbook on modal logic …
2
votes
1
answer
117
views
Logical equivalence
are these translations equivalent?
(∀x)(Ax ⇒ (∀y)(By ⇒ Cxy))
(∀x)(Bx ⇒ (∀y)(Ay ⇒ Cyx))
- 2,821
0
votes
Apart from clarification, what are some uses of formal logic in philosophy?
It may be possible to say that first order logic is also used in modal logic for at least analysing the way that modal statements seem to behave. …
- 161
3
votes
1
answer
733
views
The difference between indicative conditional and counterfactual
I was confused about the difference between indicative conditionals and counterfactuals. Could someone please offer an elaboration?
- 36.1k
0
votes
1
answer
124
views
Necessity and sufficiency of conditions [duplicate]
Is it possible that some condition is not necessary but yet sufficient?
As far as I know a sufficiency entails necessity. If something is not necessary then it can not be sufficient. Is that right?
- 6,666