Description: Lemma for iscnrm3l . (Contributed by Zhi Wang, 3-Sep-2024)
Ref | Expression | ||
---|---|---|---|
Hypotheses | iscnrm3lem5.1 | ||
iscnrm3lem5.2 | |||
iscnrm3lem5.3 | |||
iscnrm3lem5.4 | |||
Assertion | iscnrm3lem5 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | iscnrm3lem5.1 | ||
2 | iscnrm3lem5.2 | ||
3 | iscnrm3lem5.3 | ||
4 | iscnrm3lem5.4 | ||
5 | 1 2 | imbi12d | |
6 | 5 | rspc2gv | |
7 | 6 3 4 | iscnrm3lem4 |