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Logik
- Sluta utsagor (En Proposition, logiska konstanter)
- "Earth is flat": False/0
- "Om x² = 4, så är x = \pm 2": True/1
-
- Öpna utsagor (Logiska variablar): p, q, ...
-
T0: för alla värden är det sant
- Pv!P
|P|!P|Pv!P|
|-|--|----|
|0|1 |1 |
|1|0 |1 |
F0: Falskt för alla värden
- P^!P
|P|!P|P^!P|
|-|--|----|
|1|0 |0 |
|0|1 |0 |