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Related theorems Unicode version |
| Description: Value of an alternate
definition of the |
| Ref | Expression |
|---|---|
| 2nd2val |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | visset 1804 |
. . . . . 6
| |
| 2 | visset 1804 |
. . . . . 6
| |
| 3 | 1, 2 | op2nd 4070 |
. . . . 5
|
| 4 | equid 1122 |
. . . . . . . 8
| |
| 5 | 4 | a1i 8 |
. . . . . . 7
|
| 6 | id 59 |
. . . . . . 7
| |
| 7 | eqid 1468 |
. . . . . . 7
| |
| 8 | 2, 5, 6, 7 | oprabval5 4014 |
. . . . . 6
|
| 9 | 1, 2, 8 | mp2an 695 |
. . . . 5
|
| 10 | df-opr 3950 |
. . . . 5
| |
| 11 | 3, 9, 10 | 3eqtr2r 1494 |
. . . 4
|
| 12 | fveq2 3709 |
. . . . 5
| |
| 13 | fveq2 3709 |
. . . . 5
| |
| 14 | 12, 13 | eqeq12d 1481 |
. . . 4
|
| 15 | 11, 14 | mpbii 193 |
. . 3
|
| 16 | 15 | 19.23aivv 1291 |
. 2
|
| 17 | visset 1804 |
. . . . . . . . . . 11
| |
| 18 | visset 1804 |
. . . . . . . . . . 11
| |
| 19 | 17, 18 | pm3.2i 285 |
. . . . . . . . . 10
|
| 20 | a9e 1121 |
. . . . . . . . . 10
| |
| 21 | 19, 20 | 2th 716 |
. . . . . . . . 9
|
| 22 | 21 | opabbii 2661 |
. . . . . . . 8
|
| 23 | df-xp 3174 |
. . . . . . . 8
| |
| 24 | dmoprab 3987 |
. . . . . . . 8
| |
| 25 | 22, 23, 24 | 3eqtr4r 1498 |
. . . . . . 7
|
| 26 | 25 | eleq2i 1530 |
. . . . . 6
|
| 27 | elvv 3218 |
. . . . . 6
| |
| 28 | eqcom 1469 |
. . . . . . 7
| |
| 29 | 28 | 2exbii 1048 |
. . . . . 6
|
| 30 | 26, 27, 29 | 3bitr 177 |
. . . . 5
|
| 31 | 30 | negbii 187 |
. . . 4
|
| 32 | ndmfv 3730 |
. . . 4
| |
| 33 | 31, 32 | sylbir 201 |
. . 3
|
| 34 | n0 2279 |
. . . . . . . . 9
| |
| 35 | 2 | elrn2 3335 |
. . . . . . . . . . 11
|
| 36 | opex 2772 |
. . . . . . . . . . . . 13
| |
| 37 | 36 | elsnc 2421 |
. . . . . . . . . . . 12
|
| 38 | 37 | exbii 1047 |
. . . . . . . . . . 11
|
| 39 | 35, 38 | bitr 173 |
. . . . . . . . . 10
|
| 40 | 39 | exbii 1047 |
. . . . . . . . 9
|
| 41 | excom 1042 |
. . . . . . . . 9
| |
| 42 | 34, 40, 41 | 3bitr 177 |
. . . . . . . 8
|
| 43 | 42 | biimp 151 |
. . . . . . 7
|
| 44 | 43 | con1i 96 |
. . . . . 6
|
| 45 | 44 | unieqd 2502 |
. . . . 5
|
| 46 | uni0 2515 |
. . . . 5
| |
| 47 | 45, 46 | syl6eq 1515 |
. . . 4
|
| 48 | 2ndval 4066 |
. . . 4
| |
| 49 | 47, 48 | syl5eq 1511 |
. . 3
|
| 50 | 33, 49 | eqtr4d 1502 |
. 2
|
| 51 | 16, 50 | pm2.61i 126 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: df2nd2 4111 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-9 962 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-nul 2700 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-3an 775 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-v 1803 df-sbc 1932 df-csb 1992 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-br 2610 df-opab 2657 df-id 2824 df-xp 3174 df-rel 3175 df-cnv 3176 df-co 3177 df-dm 3178 df-rn 3179 df-res 3180 df-ima 3181 df-fun 3182 df-fv 3188 df-opr 3950 df-oprab 3951 df-2nd 4064 |