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-rw-r--r--src/Helium/Algebra/Ordered/StrictTotal/Properties/DivisionRing.agda4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/Helium/Algebra/Ordered/StrictTotal/Properties/DivisionRing.agda b/src/Helium/Algebra/Ordered/StrictTotal/Properties/DivisionRing.agda
index c0207a3..bfd38b7 100644
--- a/src/Helium/Algebra/Ordered/StrictTotal/Properties/DivisionRing.agda
+++ b/src/Helium/Algebra/Ordered/StrictTotal/Properties/DivisionRing.agda
@@ -97,7 +97,7 @@ open import Helium.Algebra.Ordered.StrictTotal.Properties.Ring ring public
; x>1∧y≥1⇒x*y>1; x≥1∧y>1⇒x*y>1; 0≤x<1∧y≤1⇒x*y<1; x≤1∧0≤y<1⇒x*y<1
; x≥1∧y≥1⇒x*y≥1; 0≤x≤1∧y≤1⇒x*y≤1; x≤1∧0≤y≤1⇒x*y≤1
- ; x*x≥0
+ ; x*x≥0; x*y≈0⇒x≈0⊎y≈0
; ^-zeroˡ; ^-zeroʳ
; ^-identityʳ
@@ -109,6 +109,8 @@ open import Helium.Algebra.Ordered.StrictTotal.Properties.Ring ring public
; x>0⇒x^n>0
; x≥0⇒x^n≥0
+ ; x^n≈0⇒x≈0
+
; x>1∧n≢0⇒x^n>1; 0≤x<1∧n≢0⇒x^n<1
; x≥1⇒x^n≥1; 0≤x≤1⇒x^n≤1
)