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| Description: Membership relation for the values of a function whose image is a subclass. (Contributed by Raph Levien, 20-Nov-2006.) |
| Ref | Expression |
|---|---|
| funimass4 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 2063 |
. . . . . . . . . . . 12
| |
| 2 | visset 1813 |
. . . . . . . . . . . . . 14
| |
| 3 | 2 | funbrfvb 3755 |
. . . . . . . . . . . . 13
|
| 4 | 3 | ex 373 |
. . . . . . . . . . . 12
|
| 5 | 1, 4 | syl9 57 |
. . . . . . . . . . 11
|
| 6 | 5 | imp31 362 |
. . . . . . . . . 10
|
| 7 | eqcom 1477 |
. . . . . . . . . 10
| |
| 8 | 6, 7 | syl5bb 532 |
. . . . . . . . 9
|
| 9 | 8 | rexbidva 1660 |
. . . . . . . 8
|
| 10 | 2 | elima 3408 |
. . . . . . . 8
|
| 11 | 9, 10 | syl6rbbr 539 |
. . . . . . 7
|
| 12 | 11 | imbi1d 613 |
. . . . . 6
|
| 13 | r19.23v 1741 |
. . . . . 6
| |
| 14 | 12, 13 | syl6bbr 538 |
. . . . 5
|
| 15 | 14 | albidv 1278 |
. . . 4
|
| 16 | ralcom4 1823 |
. . . . 5
| |
| 17 | fvex 3732 |
. . . . . . 7
| |
| 18 | eleq1 1534 |
. . . . . . 7
| |
| 19 | 17, 18 | ceqsalv 1827 |
. . . . . 6
|
| 20 | 19 | ralbii 1667 |
. . . . 5
|
| 21 | 16, 20 | bitr3 175 |
. . . 4
|
| 22 | 15, 21 | syl6bb 536 |
. . 3
|
| 23 | dfss2 2058 |
. . 3
| |
| 24 | 22, 23 | syl5bb 532 |
. 2
|
| 25 | 24 | ancoms 436 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funimass3 3806 funimass5 3807 funconstss 3808 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 ax-un 2866 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-ral 1649 df-rex 1650 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-id 2835 df-xp 3184 df-cnv 3186 df-co 3187 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fun 3192 df-fn 3193 df-fv 3198 |