master > master: codego - iff

2021-05-15 00:05:03 +02:00
parent 9b225b0551
commit 79bfcf57bb
5 changed files with 24 additions and 4 deletions
--- a/codego/aussagenlogik/formulae/formulae_construction.go
+++ b/codego/aussagenlogik/formulae/formulae_construction.go
@@ -115,3 +115,12 @@ func Implies(fml1 Formula, fml2 Formula) Formula {
 		subformulae: [](*Formula){&fml1, &fml2},
 	}
 }
+
+func DoubleImplication(fml1 Formula, fml2 Formula) Formula {
+	return Formula{
+		kind:        "iff",
+		expr:        "(" + fml1.expr + " <-> " + fml2.expr + ")",
+		valence:     2,
+		subformulae: [](*Formula){&fml1, &fml2},
+	}
+}