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| Mirrors > Home > ILE Home > Th. List > prodeq1f | Unicode version | ||
| Description: Equality theorem for a product. (Contributed by Scott Fenton, 1-Dec-2017.) |
| Ref | Expression |
|---|---|
| prodeq1f.1 |
|
| prodeq1f.2 |
|
| Ref | Expression |
|---|---|
| prodeq1f |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sseq1 3271 |
. . . . . . 7
| |
| 2 | eleq2 2302 |
. . . . . . . . 9
| |
| 3 | 2 | dcbid 850 |
. . . . . . . 8
|
| 4 | 3 | ralbidv 2550 |
. . . . . . 7
|
| 5 | 1, 4 | anbi12d 477 |
. . . . . 6
|
| 6 | prodeq1f.1 |
. . . . . . . . . . . . . 14
| |
| 7 | prodeq1f.2 |
. . . . . . . . . . . . . 14
| |
| 8 | 6, 7 | nfeq 2400 |
. . . . . . . . . . . . 13
|
| 9 | eleq2 2302 |
. . . . . . . . . . . . . . 15
| |
| 10 | 9 | ifbid 3662 |
. . . . . . . . . . . . . 14
|
| 11 | 10 | adantr 276 |
. . . . . . . . . . . . 13
|
| 12 | 8, 11 | mpteq2da 4220 |
. . . . . . . . . . . 12
|
| 13 | 12 | seqeq3d 10892 |
. . . . . . . . . . 11
|
| 14 | 13 | breq1d 4140 |
. . . . . . . . . 10
|
| 15 | 14 | anbi2d 468 |
. . . . . . . . 9
|
| 16 | 15 | exbidv 1878 |
. . . . . . . 8
|
| 17 | 16 | rexbidv 2551 |
. . . . . . 7
|
| 18 | 12 | seqeq3d 10892 |
. . . . . . . 8
|
| 19 | 18 | breq1d 4140 |
. . . . . . 7
|
| 20 | 17, 19 | anbi12d 477 |
. . . . . 6
|
| 21 | 5, 20 | anbi12d 477 |
. . . . 5
|
| 22 | 21 | rexbidv 2551 |
. . . 4
|
| 23 | f1oeq3 5629 |
. . . . . . 7
| |
| 24 | 23 | anbi1d 469 |
. . . . . 6
|
| 25 | 24 | exbidv 1878 |
. . . . 5
|
| 26 | 25 | rexbidv 2551 |
. . . 4
|
| 27 | 22, 26 | orbi12d 805 |
. . 3
|
| 28 | 27 | iotabidv 5360 |
. 2
|
| 29 | df-proddc 12318 |
. 2
| |
| 30 | df-proddc 12318 |
. 2
| |
| 31 | 28, 29, 30 | 3eqtr4g 2296 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-if 3639 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-mpt 4194 df-cnv 4782 df-dm 4784 df-rn 4785 df-res 4786 df-iota 5337 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-ov 6088 df-oprab 6089 df-mpo 6090 df-recs 6576 df-frec 6662 df-seqfrec 10885 df-proddc 12318 |
| This theorem is used by: prodeq1 12320 |
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