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-rw-r--r--src/input/mset2.input.pamphlet3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/input/mset2.input.pamphlet b/src/input/mset2.input.pamphlet
index 4f6d2337..a099cdf3 100644
--- a/src/input/mset2.input.pamphlet
+++ b/src/input/mset2.input.pamphlet
@@ -25,7 +25,8 @@ I := intersect(s,t)
difference(s,t)
S := symmetricDifference(s,t)
(U = union(S,I))@Boolean
-t1 := multiset [1,2,2,3]; [t1 < t, t1 < s, t < s, t1 <= s]
+t1 := multiset [1,2,2,3];
+[part?(t1,t), part?(t1,s), part?(t,s), not part?(s,t1)]
@
\eject
\begin{thebibliography}{99}