Step |
Hyp |
Ref |
Expression |
1 |
|
rng2idlsubgsubrng.r |
|
2 |
|
rng2idlsubgsubrng.i |
|
3 |
|
rng2idlsubgsubrng.u |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
|
eqid |
|
7 |
|
eqid |
|
8 |
4 5 6 7
|
2idlelb |
|
9 |
8
|
simplbi |
|
10 |
2 9
|
syl |
|
11 |
|
eqid |
|
12 |
4 11
|
rnglidlrng |
|
13 |
1 10 3 12
|
syl3anc |
|
14 |
1 2 13
|
rng2idlsubrng |
Could not format ( ph -> I e. ( SubRng ` R ) ) : No typesetting found for |- ( ph -> I e. ( SubRng ` R ) ) with typecode |- |