vault backup: 2026-03-10 08:33:02

DAS/Groups.md

@@ -4,4 +4,8 @@ Groups are Closures that have the following properties:
 2. **associativity**: changing the order of operations doesn't change the result
 3. **identity**: there is a neutral element ($0$ in addition, $1$ in multiplication)
 4. **inverses**: every element has a element when combined results in the identity element ($+5 + (-5) = 0$)
-   
+
+## Order of elements in a cyclic group
+$"order"(a) = n/("gcd(a,n)")$
+$n$: from $ZZ\/10ZZ$ => $10$
+$a$: element to find order of