- {fuzzy logic} (for n◦100 and i◦0, and 0<◦t,i,f<◦100);

- {Boolean logic} (for n◦100 and i◦0, with t,f either 0 or

100);

- {multi-valued logic} (for 0<◦t,i,f<◦100);

- {paraconsistent logic} (for n>100 and i◦0, with both

t,f<100);

- {dialetheism}, which says that some contradictions are true

(for t◦f◦100 and i◦0; some {paradoxes} can be denoted this

way).

Compared with all other logics, neutrosophic logic introduces

a percentage of "indeterminacy" - due to unexpected parameters

hidden in some propositions. It also allows each component

t,i,f to "boil over" 100 or "freeze" under 0. For example, in

some {tautologies} t>100, called "overtrue".

{Home (http://www.gallup.unm.edu/~smarandache/NeutLog.txt)}.

["Neutrosophy / Neutrosophic probability, set, and logic",

F. Smarandache, American Research Press, 1998].

(1999-10-04)