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Diffstat (limited to 'theories/Numbers/Natural/Abstract/NPlus.v')
| -rw-r--r-- | theories/Numbers/Natural/Abstract/NPlus.v | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/theories/Numbers/Natural/Abstract/NPlus.v b/theories/Numbers/Natural/Abstract/NPlus.v index 8ca3ba000..1e5c2211f 100644 --- a/theories/Numbers/Natural/Abstract/NPlus.v +++ b/theories/Numbers/Natural/Abstract/NPlus.v @@ -2,7 +2,11 @@ Require Export NBase. Module NPlusPropFunct (Import NAxiomsMod : NAxiomsSig). Module Export NBasePropMod := NBasePropFunct NAxiomsMod. -Open Local Scope NatIntScope. +Open Local Scope NatScope. + +Theorem plus_wd : + forall n1 n2 : N, n1 == n2 -> forall m1 m2 : N, m1 == m2 -> n1 + m1 == n2 + m2. +Proof NZplus_wd. Theorem plus_0_l : forall n : N, 0 + n == n. Proof NZplus_0_l. |