A logic system from Buddhist thinking with four values:
- affirmation
- negation
- non-affirmation and non-negation (MuAnswer)
- affirmation and negation (DoubleThink?)
On the Web, see http://laetusinpraesens.org/docs80s/83deval4.php and also http://web.archive.org/web/20010808140651/http://www.human.toyogakuen-u.ac.jp/~acmuller/yogacara/thinkers/nagarjuna-bio-asc.htm (about Nagarjuna, who employed the tetralemma heavily).
Let's try some truth tables. We have True (T), False(F), Mu(M) and Doublethink(D).
T & T = T T | T = T
T & F = F T | F = T
T & M = M T | M = T
T & D = D T | D = T
F & F = F F | F = F
F & M = F F | M = M
F & D = F F | D = D
M & M = M? M | M = M
M & D = F? M | D = T?
D & D = D D | D = D
Does this look right? Mu
See also: ThreeValuedLogic, BooleanLogic, FuzzyLogic, MultiValuedLogic
CategoryEasternThought, CategoryLogic