New test.

diff --git a/helm/matita/tests/fold.ma b/helm/matita/tests/fold.ma
new file mode 100644 (file)
index 0000000..bb6d36d
--- /dev/null
+++ b/helm/matita/tests/fold.ma
@@ -0,0 +1,11 @@
+set "baseuri" "cic:/test".
+alias id "nat" = "cic:/Coq/Init/Datatypes/nat.ind#xpointer(1/1)".
+alias num (instance 0) = "natural number".
+alias symbol "eq" (instance 0) = "leibnitz's equality".
+alias symbol "plus" (instance 0) = "natural plus".
+theorem t: \forall x:nat. 0+x=x.
+ intro.
+ simplify in match (0+x) in \vdash (? ? % ?).
+ fold simplify (0 + x) in \vdash (? ? % ?).
+ reflexivity.
+qed.
\ No newline at end of file