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-rw-r--r--src/Helium/Algebra/Ordered/StrictTotal/Properties/Ring.agda2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Helium/Algebra/Ordered/StrictTotal/Properties/Ring.agda b/src/Helium/Algebra/Ordered/StrictTotal/Properties/Ring.agda
index db070e0..c83f683 100644
--- a/src/Helium/Algebra/Ordered/StrictTotal/Properties/Ring.agda
+++ b/src/Helium/Algebra/Ordered/StrictTotal/Properties/Ring.agda
@@ -105,11 +105,13 @@ open import Helium.Algebra.Ordered.StrictTotal.Properties.AbelianGroup +-abelian
; ⁻¹-anti-cancel-< to -‿anti-cancel-<
; ⁻¹-anti-cancel-≤ to -‿anti-cancel-≤
+ ; x≈ε⇒x⁻¹≈ε to x≈0⇒-x≈0
; x<ε⇒x⁻¹>ε to x<0⇒-x>0
; x>ε⇒x⁻¹<ε to x>0⇒-x<0
; x≤ε⇒x⁻¹≥ε to x≤0⇒-x≥0
; x≥ε⇒x⁻¹≤ε to x≥0⇒-x≤0
+ ; x⁻¹≈ε⇒x≈ε to -x≈0⇒x≈0
; x⁻¹<ε⇒x>ε to -x<0⇒x>0
; x⁻¹>ε⇒x<ε to -x>0⇒x<0
; x⁻¹≤ε⇒x≥ε to -x≤0⇒x≥0