Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > aev | Unicode version |
Description: A "distinctor elimination" lemma with no restrictions on variables in the consequent, proved without using ax-16 1695. (Contributed by NM, 8-Nov-2006.) (Proof shortened by Andrew Salmon, 21-Jun-2011.) |
Ref | Expression |
---|---|
aev |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hbae 1606 | . 2 | |
2 | hbae 1606 | . . . 4 | |
3 | ax-8 1395 | . . . . 5 | |
4 | 3 | spimv 1692 | . . . 4 |
5 | 2, 4 | alrimih 1358 | . . 3 |
6 | ax-8 1395 | . . . . . . . 8 | |
7 | equcomi 1592 | . . . . . . . 8 | |
8 | 6, 7 | syl6 29 | . . . . . . 7 |
9 | 8 | spimv 1692 | . . . . . 6 |
10 | 9 | alequcoms 1409 | . . . . 5 |
11 | 10 | a5i 1435 | . . . 4 |
12 | hbae 1606 | . . . . 5 | |
13 | ax-8 1395 | . . . . . 6 | |
14 | 13 | spimv 1692 | . . . . 5 |
15 | 12, 14 | alrimih 1358 | . . . 4 |
16 | alequcom 1408 | . . . 4 | |
17 | 11, 15, 16 | 3syl 17 | . . 3 |
18 | ax-8 1395 | . . . 4 | |
19 | 18 | spimv 1692 | . . 3 |
20 | 5, 17, 19 | 3syl 17 | . 2 |
21 | 1, 20 | alrimih 1358 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wal 1241 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 |
This theorem depends on definitions: df-bi 110 df-nf 1350 |
This theorem is referenced by: ax16 1694 a16g 1744 |
Copyright terms: Public domain | W3C validator |