sep-2-17_00

2025-09-02 17:00:02 +02:00
parent 2e0ba3e833
commit ac9d769b0a
2 changed files with 11 additions and 0 deletions
--- a/exercise-sep-2.txt
+++ b/exercise-sep-2.txt
@@ -13,3 +13,10 @@ AuB = {1, 2, 3, 5, 7, 9}
 A↓uB = {3, 7}
 A\B = {1, 9}
 A"delt"B = {1, 2, 5, 9}
+
+
+Beviska: 
+1) ¨A↓u(AuB) = B\A
+   
+2) (AuB)↓u¨(A↓uB) = (A↓u¨B)u(B↓u¨A)
+