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| Mirrors > Home > ILE Home > Th. List > dffun4f | Unicode version | ||
| Description: Definition of function like dffun4 5337 but using bound-variable hypotheses instead of distinct variable conditions. (Contributed by Jim Kingdon, 17-Mar-2019.) |
| Ref | Expression |
|---|---|
| dffun4f.1 |
|
| dffun4f.2 |
|
| dffun4f.3 |
|
| Ref | Expression |
|---|---|
| dffun4f |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dffun4f.1 |
. . 3
| |
| 2 | dffun4f.2 |
. . 3
| |
| 3 | 1, 2 | dffun6f 5339 |
. 2
|
| 4 | nfcv 2374 |
. . . . . . 7
| |
| 5 | nfcv 2374 |
. . . . . . 7
| |
| 6 | 4, 2, 5 | nfbr 4135 |
. . . . . 6
|
| 7 | breq2 4092 |
. . . . . 6
| |
| 8 | 6, 7 | mo4f 2140 |
. . . . 5
|
| 9 | nfv 1576 |
. . . . . . 7
| |
| 10 | nfcv 2374 |
. . . . . . . . . 10
| |
| 11 | dffun4f.3 |
. . . . . . . . . 10
| |
| 12 | nfcv 2374 |
. . . . . . . . . 10
| |
| 13 | 10, 11, 12 | nfbr 4135 |
. . . . . . . . 9
|
| 14 | nfcv 2374 |
. . . . . . . . . 10
| |
| 15 | 10, 11, 14 | nfbr 4135 |
. . . . . . . . 9
|
| 16 | 13, 15 | nfan 1613 |
. . . . . . . 8
|
| 17 | nfv 1576 |
. . . . . . . 8
| |
| 18 | 16, 17 | nfim 1620 |
. . . . . . 7
|
| 19 | breq2 4092 |
. . . . . . . . 9
| |
| 20 | 19 | anbi2d 464 |
. . . . . . . 8
|
| 21 | equequ2 1761 |
. . . . . . . 8
| |
| 22 | 20, 21 | imbi12d 234 |
. . . . . . 7
|
| 23 | 9, 18, 22 | cbval 1802 |
. . . . . 6
|
| 24 | 23 | albii 1518 |
. . . . 5
|
| 25 | 8, 24 | bitr4i 187 |
. . . 4
|
| 26 | 25 | albii 1518 |
. . 3
|
| 27 | 26 | anbi2i 457 |
. 2
|
| 28 | df-br 4089 |
. . . . . . 7
| |
| 29 | df-br 4089 |
. . . . . . 7
| |
| 30 | 28, 29 | anbi12i 460 |
. . . . . 6
|
| 31 | 30 | imbi1i 238 |
. . . . 5
|
| 32 | 31 | 2albii 1519 |
. . . 4
|
| 33 | 32 | albii 1518 |
. . 3
|
| 34 | 33 | anbi2i 457 |
. 2
|
| 35 | 3, 27, 34 | 3bitri 206 |
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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-br 4089 df-opab 4151 df-id 4390 df-cnv 4733 df-co 4734 df-fun 5328 |
| This theorem is referenced by: (None) |
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