Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > mosubopt | Unicode version |
Description: "At most one" remains true inside ordered pair quantification. (Contributed by NM, 28-Aug-2007.) |
Ref | Expression |
---|---|
mosubopt |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfa1 1434 | . . 3 | |
2 | nfe1 1385 | . . . 4 | |
3 | 2 | nfmo 1920 | . . 3 |
4 | nfa1 1434 | . . . . 5 | |
5 | nfe1 1385 | . . . . . . 7 | |
6 | 5 | nfex 1528 | . . . . . 6 |
7 | 6 | nfmo 1920 | . . . . 5 |
8 | copsexg 3981 | . . . . . . . 8 | |
9 | 8 | mobidv 1936 | . . . . . . 7 |
10 | 9 | biimpcd 148 | . . . . . 6 |
11 | 10 | sps 1430 | . . . . 5 |
12 | 4, 7, 11 | exlimd 1488 | . . . 4 |
13 | 12 | sps 1430 | . . 3 |
14 | 1, 3, 13 | exlimd 1488 | . 2 |
15 | moanimv 1975 | . . 3 | |
16 | simpl 102 | . . . . . 6 | |
17 | 16 | 2eximi 1492 | . . . . 5 |
18 | 17 | ancri 307 | . . . 4 |
19 | 18 | moimi 1965 | . . 3 |
20 | 15, 19 | sylbir 125 | . 2 |
21 | 14, 20 | syl 14 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wal 1241 wceq 1243 wex 1381 wmo 1901 cop 3378 |
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-bndl 1399 ax-4 1400 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 |
This theorem is referenced by: mosubop 4406 funoprabg 5600 |
Copyright terms: Public domain | W3C validator |