milestone update in ground, partial commit

[helm.git] / matita / matita / contribs / lambdadelta / ground / arith / nat_pred_succ.ma

diff --git a/matita/matita/contribs/lambdadelta/ground/arith/nat_pred_succ.ma b/matita/matita/contribs/lambdadelta/ground/arith/nat_pred_succ.ma
index ac01f0f8fc3aefbf78466e018ea478e8db5840f4..b7f9918b08d0191cf52391c310700d278be31116 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground/arith/nat_pred_succ.ma
+++ b/matita/matita/contribs/lambdadelta/ground/arith/nat_pred_succ.ma
@@ -27,7 +27,7 @@ qed.
 (* Inversion with nsucc *****************************************************)
 
 (*** nat_split *)
-lemma nat_split (n): ∨∨ 𝟎 = n | n = ↑↓n.
+lemma nat_split_zero_pos (n): ∨∨ 𝟎 = n | n = ↑↓n.
 #n @(nat_ind_succ … n) -n
 /2 width=1 by or_introl, or_intror/
 qed-.