Description: Isomorphism is reflexive. (Contributed by Mario Carneiro, 21-Apr-2016)
Ref | Expression | ||
---|---|---|---|
Assertion | gicref | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid | |
|
2 | 1 | idghm | |
3 | cnvresid | |
|
4 | 3 2 | eqeltrid | |
5 | isgim2 | |
|
6 | 2 4 5 | sylanbrc | |
7 | brgici | |
|
8 | 6 7 | syl | |