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| Mirrors > Home > ILE Home > Th. List > iinerm | Unicode version | ||
| Description: The intersection of a nonempty family of equivalence relations is an equivalence relation. (Contributed by Mario Carneiro, 27-Sep-2015.) |
| Ref | Expression |
|---|---|
| iinerm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eleq1 2100 |
. . . 4
| |
| 2 | 1 | cbvexv 1795 |
. . 3
|
| 3 | eleq1 2100 |
. . . 4
| |
| 4 | 3 | cbvexv 1795 |
. . 3
|
| 5 | 2, 4 | bitri 173 |
. 2
|
| 6 | r19.2m 3309 |
. . . . 5
| |
| 7 | errel 6115 |
. . . . . . 7
| |
| 8 | df-rel 4352 |
. . . . . . 7
| |
| 9 | 7, 8 | sylib 127 |
. . . . . 6
|
| 10 | 9 | reximi 2416 |
. . . . 5
|
| 11 | iinss 3708 |
. . . . 5
| |
| 12 | 6, 10, 11 | 3syl 17 |
. . . 4
|
| 13 | df-rel 4352 |
. . . 4
| |
| 14 | 12, 13 | sylibr 137 |
. . 3
|
| 15 | id 19 |
. . . . . . . . . 10
| |
| 16 | 15 | ersymb 6120 |
. . . . . . . . 9
|
| 17 | 16 | biimpd 132 |
. . . . . . . 8
|
| 18 | df-br 3765 |
. . . . . . . 8
| |
| 19 | df-br 3765 |
. . . . . . . 8
| |
| 20 | 17, 18, 19 | 3imtr3g 193 |
. . . . . . 7
|
| 21 | 20 | ral2imi 2385 |
. . . . . 6
|
| 22 | 21 | adantl 262 |
. . . . 5
|
| 23 | df-br 3765 |
. . . . . 6
| |
| 24 | vex 2560 |
. . . . . . . 8
| |
| 25 | vex 2560 |
. . . . . . . 8
| |
| 26 | 24, 25 | opex 3966 |
. . . . . . 7
|
| 27 | eliin 3662 |
. . . . . . 7
| |
| 28 | 26, 27 | ax-mp 7 |
. . . . . 6
|
| 29 | 23, 28 | bitri 173 |
. . . . 5
|
| 30 | df-br 3765 |
. . . . . 6
| |
| 31 | 25, 24 | opex 3966 |
. . . . . . 7
|
| 32 | eliin 3662 |
. . . . . . 7
| |
| 33 | 31, 32 | ax-mp 7 |
. . . . . 6
|
| 34 | 30, 33 | bitri 173 |
. . . . 5
|
| 35 | 22, 29, 34 | 3imtr4g 194 |
. . . 4
|
| 36 | 35 | imp 115 |
. . 3
|
| 37 | r19.26 2441 |
. . . . . 6
| |
| 38 | 15 | ertr 6121 |
. . . . . . . . 9
|
| 39 | df-br 3765 |
. . . . . . . . . 10
| |
| 40 | 18, 39 | anbi12i 433 |
. . . . . . . . 9
|
| 41 | df-br 3765 |
. . . . . . . . 9
| |
| 42 | 38, 40, 41 | 3imtr3g 193 |
. . . . . . . 8
|
| 43 | 42 | ral2imi 2385 |
. . . . . . 7
|
| 44 | 43 | adantl 262 |
. . . . . 6
|
| 45 | 37, 44 | syl5bir 142 |
. . . . 5
|
| 46 | df-br 3765 |
. . . . . . 7
| |
| 47 | vex 2560 |
. . . . . . . . 9
| |
| 48 | 25, 47 | opex 3966 |
. . . . . . . 8
|
| 49 | eliin 3662 |
. . . . . . . 8
| |
| 50 | 48, 49 | ax-mp 7 |
. . . . . . 7
|
| 51 | 46, 50 | bitri 173 |
. . . . . 6
|
| 52 | 29, 51 | anbi12i 433 |
. . . . 5
|
| 53 | df-br 3765 |
. . . . . 6
| |
| 54 | 24, 47 | opex 3966 |
. . . . . . 7
|
| 55 | eliin 3662 |
. . . . . . 7
| |
| 56 | 54, 55 | ax-mp 7 |
. . . . . 6
|
| 57 | 53, 56 | bitri 173 |
. . . . 5
|
| 58 | 45, 52, 57 | 3imtr4g 194 |
. . . 4
|
| 59 | 58 | imp 115 |
. . 3
|
| 60 | simpl 102 |
. . . . . . . . . . 11
| |
| 61 | simpr 103 |
. . . . . . . . . . 11
| |
| 62 | 60, 61 | erref 6126 |
. . . . . . . . . 10
|
| 63 | df-br 3765 |
. . . . . . . . . 10
| |
| 64 | 62, 63 | sylib 127 |
. . . . . . . . 9
|
| 65 | 64 | expcom 109 |
. . . . . . . 8
|
| 66 | 65 | ralimdv 2388 |
. . . . . . 7
|
| 67 | 66 | com12 27 |
. . . . . 6
|
| 68 | 67 | adantl 262 |
. . . . 5
|
| 69 | r19.26 2441 |
. . . . . . 7
| |
| 70 | r19.2m 3309 |
. . . . . . . . 9
| |
| 71 | 24, 24 | opeldm 4538 |
. . . . . . . . . . 11
|
| 72 | erdm 6116 |
. . . . . . . . . . . . 13
| |
| 73 | 72 | eleq2d 2107 |
. . . . . . . . . . . 12
|
| 74 | 73 | biimpa 280 |
. . . . . . . . . . 11
|
| 75 | 71, 74 | sylan2 270 |
. . . . . . . . . 10
|
| 76 | 75 | rexlimivw 2429 |
. . . . . . . . 9
|
| 77 | 70, 76 | syl 14 |
. . . . . . . 8
|
| 78 | 77 | ex 108 |
. . . . . . 7
|
| 79 | 69, 78 | syl5bir 142 |
. . . . . 6
|
| 80 | 79 | expdimp 246 |
. . . . 5
|
| 81 | 68, 80 | impbid 120 |
. . . 4
|
| 82 | df-br 3765 |
. . . . 5
| |
| 83 | 24, 24 | opex 3966 |
. . . . . 6
|
| 84 | eliin 3662 |
. . . . . 6
| |
| 85 | 83, 84 | ax-mp 7 |
. . . . 5
|
| 86 | 82, 85 | bitri 173 |
. . . 4
|
| 87 | 81, 86 | syl6bbr 187 |
. . 3
|
| 88 | 14, 36, 59, 87 | iserd 6132 |
. 2
|
| 89 | 5, 88 | sylanbr 269 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| 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-ral 2311 df-rex 2312 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-iin 3660 df-br 3765 df-opab 3819 df-xp 4351 df-rel 4352 df-cnv 4353 df-co 4354 df-dm 4355 df-er 6106 |
| This theorem is referenced by: riinerm 6179 |
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