Description: Define the subring of integral elements in a ring. (Contributed by Mario Carneiro, 2-Dec-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | df-zrng |
Step | Hyp | Ref | Expression |
---|---|---|---|
0 | czr | ||
1 | vr | ||
2 | cvv | ||
3 | 1 | cv | |
4 | citr | ||
5 | czrh | ||
6 | 3 5 | cfv | |
7 | 6 | crn | |
8 | 3 7 4 | co | |
9 | 1 2 8 | cmpt | |
10 | 0 9 | wceq |