I keep confusing myself about how the word nor operates in conditional reasoning. If someone could explain it to me, that would be so helpful! I feel like I want to treat the "nor" like "and" and then use "or" in the contrapositive, but I think treating it like "or" is correct?
Example: "If T volunteers, then neither Felicia nor Veena volunteers"
Question about "Nor" in Conditional Reasoning Forum
- 20130312

- Posts: 3814
- Joined: Wed Nov 09, 2011 8:53 pm
Re: Question about "Nor" in Conditional Reasoning
If T, then not F AND not V
CP: If F or V, then not T
ETA: Formal logic symbols
T ⇒ ~F & ~V
F ∨ V ⇒ ~T
CP: If F or V, then not T
ETA: Formal logic symbols
T ⇒ ~F & ~V
F ∨ V ⇒ ~T
Last edited by 20130312 on Wed Nov 30, 2011 12:44 pm, edited 1 time in total.
-
kaiser

- Posts: 3019
- Joined: Mon May 09, 2011 11:34 pm
Re: Question about "Nor" in Conditional Reasoning
Nor is just a way of saying "and" when the factors are both negatives (i.e. that something will NOT happen)
Always works out to this:
If A --> NOT B and NOT C
Always works out to this:
If A --> NOT B and NOT C