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| Mirrors > Home > ILE Home > Th. List > rmo3f | Unicode version | ||
| Description: Restricted "at most one" using explicit substitution. (Contributed by NM, 4-Nov-2012.) (Revised by NM, 16-Jun-2017.) (Revised by Thierry Arnoux, 8-Oct-2017.) |
| Ref | Expression |
|---|---|
| rmo3f.1 |
|
| rmo3f.2 |
|
| rmo3f.3 |
|
| Ref | Expression |
|---|---|
| rmo3f |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-rmo 2492 |
. 2
| |
| 2 | sban 1983 |
. . . . . . . . . . 11
| |
| 3 | rmo3f.1 |
. . . . . . . . . . . . 13
| |
| 4 | 3 | clelsb1f 2352 |
. . . . . . . . . . . 12
|
| 5 | 4 | anbi1i 458 |
. . . . . . . . . . 11
|
| 6 | 2, 5 | bitri 184 |
. . . . . . . . . 10
|
| 7 | 6 | anbi2i 457 |
. . . . . . . . 9
|
| 8 | an4 586 |
. . . . . . . . 9
| |
| 9 | ancom 266 |
. . . . . . . . . 10
| |
| 10 | 9 | anbi1i 458 |
. . . . . . . . 9
|
| 11 | 7, 8, 10 | 3bitri 206 |
. . . . . . . 8
|
| 12 | 11 | imbi1i 238 |
. . . . . . 7
|
| 13 | impexp 263 |
. . . . . . 7
| |
| 14 | impexp 263 |
. . . . . . 7
| |
| 15 | 12, 13, 14 | 3bitri 206 |
. . . . . 6
|
| 16 | 15 | albii 1493 |
. . . . 5
|
| 17 | df-ral 2489 |
. . . . 5
| |
| 18 | rmo3f.2 |
. . . . . . 7
| |
| 19 | 18 | nfcri 2342 |
. . . . . 6
|
| 20 | 19 | r19.21 2582 |
. . . . 5
|
| 21 | 16, 17, 20 | 3bitr2i 208 |
. . . 4
|
| 22 | 21 | albii 1493 |
. . 3
|
| 23 | rmo3f.3 |
. . . . 5
| |
| 24 | 19, 23 | nfan 1588 |
. . . 4
|
| 25 | 24 | mo3 2108 |
. . 3
|
| 26 | df-ral 2489 |
. . 3
| |
| 27 | 22, 25, 26 | 3bitr4i 212 |
. 2
|
| 28 | 1, 27 | bitri 184 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-nf 1484 df-sb 1786 df-eu 2057 df-mo 2058 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rmo 2492 |
| This theorem is referenced by: rmo4f 2971 |
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