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Diffstat (limited to 'test-suite/bugs/closed/4880.v')
| -rw-r--r-- | test-suite/bugs/closed/4880.v | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4880.v b/test-suite/bugs/closed/4880.v new file mode 100644 index 00000000..5569798d --- /dev/null +++ b/test-suite/bugs/closed/4880.v @@ -0,0 +1,11 @@ +Require Import Coq.Reals.Reals Coq.nsatz.Nsatz. +Local Open Scope R. + +Goal forall x y : R, + x*x = y * y -> + x*x = -y * -y -> + x*(x*x) = 0 -> (* The associativity does not actually matter, *) + (x*x)*x = 0. (* just otherwise [assumption] would solve the goal. *) +Proof. + nsatz. +Qed. |