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diff --git a/content/zettel/4e2.md b/content/zettel/4e2.md new file mode 100644 index 0000000..8531a35 --- /dev/null +++ b/content/zettel/4e2.md @@ -0,0 +1,22 @@ ++++ +title = "Three-valued logic" +author = "Yann Herklotz" +tags = [] +categories = [] +backlinks = ["4e1"] +forwardlinks = ["4e3", "4e2a"] +zettelid = "4e2" ++++ + +Three-valued logic, and it's extensions into infinitely-valued logic is +an interesting expansion on propositional logic, where more properties +can be expressed. Especially when one has an evaluation function which +can fail, one will have a result that is either true or false, or +unevaluatable/undefined. + +There are many different possible definitions of a three-valued logic, +each with it's positives and it's downsides. It depends on the +application which one should be chosen. Each different logic will have +slightly different definitions of and/or/implication. Three-valued logic +can also have many additional useful connectives, such as weak and +strong and/or. |