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| Description: Converse law for isomorphism. Proposition 6.30(2) of [TakeutiZaring] p. 33. |
| Ref | Expression |
|---|---|
| isocnv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1ocnv 2811 |
. . . 4
| |
| 2 | 1 | adantr 306 |
. . 3
|
| 3 | f1ocnvfv2 2920 |
. . . . . . . . . 10
| |
| 4 | 3 | adantrr 312 |
. . . . . . . . 9
|
| 5 | f1ocnvfv2 2920 |
. . . . . . . . . 10
| |
| 6 | 5 | adantrl 311 |
. . . . . . . . 9
|
| 7 | 4, 6 | breq12d 2073 |
. . . . . . . 8
|
| 8 | 7 | adantlr 310 |
. . . . . . 7
|
| 9 | ffvrn 2890 |
. . . . . . . . . . . 12
| |
| 10 | 9 | exp 291 |
. . . . . . . . . . 11
|
| 11 | ffvrn 2890 |
. . . . . . . . . . . 12
| |
| 12 | 11 | exp 291 |
. . . . . . . . . . 11
|
| 13 | 10, 12 | anim12d 431 |
. . . . . . . . . 10
|
| 14 | breq1 2065 |
. . . . . . . . . . . . 13
| |
| 15 | fveq2 2832 |
. . . . . . . . . . . . . 14
| |
| 16 | 15 | breq1d 2071 |
. . . . . . . . . . . . 13
|
| 17 | 14, 16 | bibi12d 477 |
. . . . . . . . . . . 12
|
| 18 | bicom 398 |
. . . . . . . . . . . 12
| |
| 19 | 17, 18 | syl6bb 414 |
. . . . . . . . . . 11
|
| 20 | fveq2 2832 |
. . . . . . . . . . . . 13
| |
| 21 | 20 | breq2d 2072 |
. . . . . . . . . . . 12
|
| 22 | breq2 2066 |
. . . . . . . . . . . 12
| |
| 23 | 21, 22 | bibi12d 477 |
. . . . . . . . . . 11
|
| 24 | 19, 23 | rcla42v 1404 |
. . . . . . . . . 10
|
| 25 | 13, 24 | sylan9 359 |
. . . . . . . . 9
|
| 26 | f1of 2800 |
. . . . . . . . . 10
| |
| 27 | 1, 26 | syl 12 |
. . . . . . . . 9
|
| 28 | 25, 27 | sylan 343 |
. . . . . . . 8
|
| 29 | 28 | imp 277 |
. . . . . . 7
|
| 30 | 8, 29 | bitr3d 408 |
. . . . . 6
|
| 31 | 30 | exp32 294 |
. . . . 5
|
| 32 | 31 | r19.21adv 1262 |
. . . 4
|
| 33 | 32 | r19.21aiv 1259 |
. . 3
|
| 34 | 2, 33 | jca 236 |
. 2
|
| 35 | df-iso 2439 |
. 2
| |
| 36 | df-iso 2439 |
. 2
| |
| 37 | 34, 35, 36 | 3imtr4 192 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: isofr 2940 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-br 2063 df-opab 2098 df-id 2125 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-f1 2435 df-fo 2436 df-f1o 2437 df-fv 2438 df-iso 2439 |