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diff --git a/matita/library/nat/generic_sigma_p.ma b/matita/library/nat/generic_sigma_p.ma
index e74888927b121ab627e9a1ca3c16cba42a4b6f3a..ed9f59b0a52fbcc6182712050c26291862e30b14 100644 (file)
--- a/matita/library/nat/generic_sigma_p.ma
+++ b/matita/library/nat/generic_sigma_p.ma
@@ -970,7 +970,7 @@ cut (O < p)
 ]
 qed.
     
-(*distributive propery for sigma_p_gen*)
+(*distributive property for sigma_p_gen*)
 theorem distributive_times_plus_sigma_p_generic: \forall A:Type.
 \forall plusA: A \to A \to A. \forall basePlusA: A.
 \forall timesA: A \to A \to A.