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| Mirrors > Home > ILE Home > Th. List > elixpsn | Unicode version | ||
| Description: Membership in a class of singleton functions. (Contributed by Stefan O'Rear, 24-Jan-2015.) |
| Ref | Expression |
|---|---|
| elixpsn |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sneq 3654 |
. . . 4
| |
| 2 | 1 | ixpeq1d 6820 |
. . 3
|
| 3 | 2 | eleq2d 2277 |
. 2
|
| 4 | opeq1 3833 |
. . . . 5
| |
| 5 | 4 | sneqd 3656 |
. . . 4
|
| 6 | 5 | eqeq2d 2219 |
. . 3
|
| 7 | 6 | rexbidv 2509 |
. 2
|
| 8 | elex 2788 |
. . 3
| |
| 9 | vex 2779 |
. . . . . . 7
| |
| 10 | vex 2779 |
. . . . . . 7
| |
| 11 | 9, 10 | opex 4291 |
. . . . . 6
|
| 12 | 11 | snex 4245 |
. . . . 5
|
| 13 | eleq1 2270 |
. . . . 5
| |
| 14 | 12, 13 | mpbiri 168 |
. . . 4
|
| 15 | 14 | rexlimivw 2621 |
. . 3
|
| 16 | eleq1 2270 |
. . . 4
| |
| 17 | eqeq1 2214 |
. . . . 5
| |
| 18 | 17 | rexbidv 2509 |
. . . 4
|
| 19 | vex 2779 |
. . . . . 6
| |
| 20 | 19 | elixp 6815 |
. . . . 5
|
| 21 | fveq2 5599 |
. . . . . . . 8
| |
| 22 | 21 | eleq1d 2276 |
. . . . . . 7
|
| 23 | 9, 22 | ralsn 3686 |
. . . . . 6
|
| 24 | 23 | anbi2i 457 |
. . . . 5
|
| 25 | simpl 109 |
. . . . . . . . 9
| |
| 26 | fveq2 5599 |
. . . . . . . . . . . . 13
| |
| 27 | 26 | eleq1d 2276 |
. . . . . . . . . . . 12
|
| 28 | 9, 27 | ralsn 3686 |
. . . . . . . . . . 11
|
| 29 | 28 | biimpri 133 |
. . . . . . . . . 10
|
| 30 | 29 | adantl 277 |
. . . . . . . . 9
|
| 31 | ffnfv 5761 |
. . . . . . . . 9
| |
| 32 | 25, 30, 31 | sylanbrc 417 |
. . . . . . . 8
|
| 33 | 9 | fsn2 5777 |
. . . . . . . 8
|
| 34 | 32, 33 | sylib 122 |
. . . . . . 7
|
| 35 | opeq2 3834 |
. . . . . . . . 9
| |
| 36 | 35 | sneqd 3656 |
. . . . . . . 8
|
| 37 | 36 | rspceeqv 2902 |
. . . . . . 7
|
| 38 | 34, 37 | syl 14 |
. . . . . 6
|
| 39 | 9, 10 | fvsn 5802 |
. . . . . . . . . 10
|
| 40 | id 19 |
. . . . . . . . . 10
| |
| 41 | 39, 40 | eqeltrid 2294 |
. . . . . . . . 9
|
| 42 | 9, 10 | fnsn 5347 |
. . . . . . . . 9
|
| 43 | 41, 42 | jctil 312 |
. . . . . . . 8
|
| 44 | fneq1 5381 |
. . . . . . . . 9
| |
| 45 | fveq1 5598 |
. . . . . . . . . 10
| |
| 46 | 45 | eleq1d 2276 |
. . . . . . . . 9
|
| 47 | 44, 46 | anbi12d 473 |
. . . . . . . 8
|
| 48 | 43, 47 | syl5ibrcom 157 |
. . . . . . 7
|
| 49 | 48 | rexlimiv 2619 |
. . . . . 6
|
| 50 | 38, 49 | impbii 126 |
. . . . 5
|
| 51 | 20, 24, 50 | 3bitri 206 |
. . . 4
|
| 52 | 16, 18, 51 | vtoclbg 2839 |
. . 3
|
| 53 | 8, 15, 52 | pm5.21nii 706 |
. 2
|
| 54 | 3, 7, 53 | vtoclbg 2839 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-pow 4234 ax-pr 4269 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-reu 2493 df-v 2778 df-sbc 3006 df-un 3178 df-in 3180 df-ss 3187 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-br 4060 df-opab 4122 df-mpt 4123 df-id 4358 df-xp 4699 df-rel 4700 df-cnv 4701 df-co 4702 df-dm 4703 df-rn 4704 df-res 4705 df-ima 4706 df-iota 5251 df-fun 5292 df-fn 5293 df-f 5294 df-f1 5295 df-fo 5296 df-f1o 5297 df-fv 5298 df-ixp 6809 |
| This theorem is referenced by: ixpsnf1o 6846 |
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