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| Description: Axiom of Replacement using abbreviations. Axiom 39(vi) of [Quine] p. 284. Compare Exercise 9 of [TakeutiZaring] p. 29. |
| Ref | Expression |
|---|---|
| funimaexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | imaeq2 3394 |
. . . . 5
| |
| 2 | 1 | eleq1d 1537 |
. . . 4
|
| 3 | 2 | imbi2d 611 |
. . 3
|
| 4 | dffun5 3521 |
. . . . 5
| |
| 5 | 4 | pm3.27bi 326 |
. . . 4
|
| 6 | ax-17 969 |
. . . . . 6
| |
| 7 | 6 | axrep4 2692 |
. . . . 5
|
| 8 | isset 1810 |
. . . . . 6
| |
| 9 | dfima3 3398 |
. . . . . . . . 9
| |
| 10 | 9 | eqeq2i 1482 |
. . . . . . . 8
|
| 11 | abeq2 1565 |
. . . . . . . 8
| |
| 12 | 10, 11 | bitr 173 |
. . . . . . 7
|
| 13 | 12 | exbii 1049 |
. . . . . 6
|
| 14 | 8, 13 | bitr 173 |
. . . . 5
|
| 15 | 7, 14 | sylibr 200 |
. . . 4
|
| 16 | 5, 15 | syl 10 |
. . 3
|
| 17 | 3, 16 | vtoclg 1843 |
. 2
|
| 18 | 17 | impcom 351 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: funimaex 3568 resfunexg 3571 fnex 3599 carduniima 4870 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-rep 2688 ax-sep 2698 ax-pow 2737 ax-pr 2774 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-br 2615 df-opab 2662 df-id 2830 df-xp 3179 df-cnv 3181 df-co 3182 df-dm 3183 df-rn 3184 df-res 3185 df-ima 3186 df-fun 3187 |