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| Mirrors > Home > ILE Home > Th. List > sbthlem2 | Unicode version | ||
| Description: Lemma for isbth 7284. (Contributed by NM, 22-Mar-1998.) |
| Ref | Expression |
|---|---|
| sbthlem.1 |
|
| sbthlem.2 |
|
| Ref | Expression |
|---|---|
| sbthlem2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sbthlem.1 |
. . . . . . . . 9
| |
| 2 | sbthlem.2 |
. . . . . . . . 9
| |
| 3 | 1, 2 | sbthlem1 7274 |
. . . . . . . 8
|
| 4 | imass2 5163 |
. . . . . . . 8
| |
| 5 | sscon 3363 |
. . . . . . . 8
| |
| 6 | 3, 4, 5 | mp2b 8 |
. . . . . . 7
|
| 7 | imass2 5163 |
. . . . . . 7
| |
| 8 | sscon 3363 |
. . . . . . 7
| |
| 9 | 6, 7, 8 | mp2b 8 |
. . . . . 6
|
| 10 | imassrn 5137 |
. . . . . . . 8
| |
| 11 | sstr2 3255 |
. . . . . . . 8
| |
| 12 | 10, 11 | ax-mp 5 |
. . . . . . 7
|
| 13 | difss 3355 |
. . . . . . 7
| |
| 14 | ssconb 3362 |
. . . . . . 7
| |
| 15 | 12, 13, 14 | sylancl 417 |
. . . . . 6
|
| 16 | 9, 15 | mpbiri 168 |
. . . . 5
|
| 17 | 16, 13 | jctil 312 |
. . . 4
|
| 18 | 1, 13 | ssexi 4271 |
. . . . 5
|
| 19 | sseq1 3271 |
. . . . . 6
| |
| 20 | imaeq2 5122 |
. . . . . . . . 9
| |
| 21 | 20 | difeq2d 3347 |
. . . . . . . 8
|
| 22 | 21 | imaeq2d 5126 |
. . . . . . 7
|
| 23 | difeq2 3341 |
. . . . . . 7
| |
| 24 | 22, 23 | sseq12d 3279 |
. . . . . 6
|
| 25 | 19, 24 | anbi12d 477 |
. . . . 5
|
| 26 | 18, 25 | elab 2970 |
. . . 4
|
| 27 | 17, 26 | sylibr 134 |
. . 3
|
| 28 | 27, 2 | eleqtrrdi 2332 |
. 2
|
| 29 | elssuni 3963 |
. 2
| |
| 30 | 28, 29 | syl 14 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 |
| This theorem is used by: sbthlemi3 7276 |
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