Axiom moved from ex_deriv to deriv where it belongs to.

diff --git a/helm/software/matita/dama_didactic/deriv.ma b/helm/software/matita/dama_didactic/deriv.ma
index 201471c456ff86245d4c5d9ebc5f443172bc6872..9619b94ba2b83d46b93cf122254d8e01e1ca42a2 100644 (file)
--- a/helm/software/matita/dama_didactic/deriv.ma
+++ b/helm/software/matita/dama_didactic/deriv.ma
@@ -110,3 +110,5 @@ for @{ 'elev $a $b }.
  
 interpretation "function power" 'elev x y =
  (cic:/matita/didactic/deriv/felev.con x y). 
+
+axiom tech1: ∀n,m. F_OF_nat n + F_OF_nat m = F_OF_nat (n + m).

diff --git a/helm/software/matita/dama_didactic/ex_deriv.ma b/helm/software/matita/dama_didactic/ex_deriv.ma
index 59e881592b370d7c484810b33c17b75a1ded9c19..b451a0acce5dbf0eb92008cb2f4687cc20fad5d1 100644 (file)
--- a/helm/software/matita/dama_didactic/ex_deriv.ma
+++ b/helm/software/matita/dama_didactic/ex_deriv.ma
@@ -183,8 +183,6 @@ theorem dispari_in_pari: ∀ f:F. fdispari f → fpari f '.
  done.
 qed.
 
-axiom tech1: ∀n,m. F_OF_nat n + F_OF_nat m = F_OF_nat (n + m).
-
 alias symbol "plus" = "natural plus".
 alias num (instance 0) = "natural number".
 theorem de_prodotto_funzioni: