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[helm.git] / helm / software / matita / contribs / dama / dama / models / q_support.ma

diff --git a/helm/software/matita/contribs/dama/dama/models/q_support.ma b/helm/software/matita/contribs/dama/dama/models/q_support.ma
index 9d73f7ab9b209fdfa887c3aed98764d3cd737265..b948e61b5d8dc1e936e499e82de27bbb1a26b44e 100644 (file)
--- a/helm/software/matita/contribs/dama/dama/models/q_support.ma
+++ b/helm/software/matita/contribs/dama/dama/models/q_support.ma
@@ -52,6 +52,10 @@ axiom q_le_minus: ∀a,b,c:ℚ. a ≤ c - b → a + b ≤ c.
 axiom q_le_minus_r: ∀a,b,c:ℚ. a - b ≤ c → a ≤ c + b.
 axiom q_lt_plus: ∀a,b,c:ℚ. a - b < c → a < c + b.
 axiom q_lt_minus: ∀a,b,c:ℚ. a + b < c → a < c - b.
+axiom q_le_plus: ∀a,b,c:ℚ. a ≤ c + b → a - b ≤ c.
+axiom q_le_plus_r: ∀a,b,c:ℚ. a + b ≤ c → a ≤ c - b.
+axiom q_lt_plus_r: ∀a,b,c:ℚ. a + b < c → a < c - b.
+axiom q_lt_minus_r: ∀a,b,c:ℚ. a - b < c → a < c + b.
 axiom q_lt_opp_opp: ∀a,b.b < a → Qopp a < Qopp b.
 axiom q_lt_to_le: ∀a,b:ℚ.a < b → a ≤ b.
 axiom q_le_to_diff_ge_OQ : ∀a,b.a ≤ b → OQ ≤ b-a.