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| Mirrors > Home > ILE Home > Th. List > isoti | Unicode version | ||
| Description: An isomorphism preserves tightness. (Contributed by Jim Kingdon, 26-Nov-2021.) |
| Ref | Expression |
|---|---|
| isoti |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | isocnv 5471 |
. . . 4
| |
| 2 | isotilem 6419 |
. . . 4
| |
| 3 | 1, 2 | syl 14 |
. . 3
|
| 4 | isotilem 6419 |
. . 3
| |
| 5 | 3, 4 | impbid 127 |
. 2
|
| 6 | equequ1 1638 |
. . . 4
| |
| 7 | breq1 3788 |
. . . . . 6
| |
| 8 | 7 | notbid 624 |
. . . . 5
|
| 9 | breq2 3789 |
. . . . . 6
| |
| 10 | 9 | notbid 624 |
. . . . 5
|
| 11 | 8, 10 | anbi12d 456 |
. . . 4
|
| 12 | 6, 11 | bibi12d 233 |
. . 3
|
| 13 | equequ2 1639 |
. . . 4
| |
| 14 | breq2 3789 |
. . . . . 6
| |
| 15 | 14 | notbid 624 |
. . . . 5
|
| 16 | breq1 3788 |
. . . . . 6
| |
| 17 | 16 | notbid 624 |
. . . . 5
|
| 18 | 15, 17 | anbi12d 456 |
. . . 4
|
| 19 | 13, 18 | bibi12d 233 |
. . 3
|
| 20 | 12, 19 | cbvral2v 2585 |
. 2
|
| 21 | 5, 20 | syl6bb 194 |
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 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 |
| This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 df-v 2603 df-sbc 2816 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-rn 4374 df-res 4375 df-ima 4376 df-iota 4887 df-fun 4924 df-fn 4925 df-f 4926 df-f1 4927 df-fo 4928 df-f1o 4929 df-fv 4930 df-isom 4931 |
| This theorem is referenced by: supisoti 6423 |
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