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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 3216 |
. . . . . . 7
| |
| 2 | eleq2 2269 |
. . . . . . . . 9
| |
| 3 | 2 | dcbid 840 |
. . . . . . . 8
|
| 4 | 3 | ralbidv 2506 |
. . . . . . 7
|
| 5 | 1, 4 | anbi12d 473 |
. . . . . 6
|
| 6 | prodeq1f.1 |
. . . . . . . . . . . . . 14
| |
| 7 | prodeq1f.2 |
. . . . . . . . . . . . . 14
| |
| 8 | 6, 7 | nfeq 2356 |
. . . . . . . . . . . . 13
|
| 9 | eleq2 2269 |
. . . . . . . . . . . . . . 15
| |
| 10 | 9 | ifbid 3592 |
. . . . . . . . . . . . . 14
|
| 11 | 10 | adantr 276 |
. . . . . . . . . . . . 13
|
| 12 | 8, 11 | mpteq2da 4133 |
. . . . . . . . . . . 12
|
| 13 | 12 | seqeq3d 10600 |
. . . . . . . . . . 11
|
| 14 | 13 | breq1d 4054 |
. . . . . . . . . 10
|
| 15 | 14 | anbi2d 464 |
. . . . . . . . 9
|
| 16 | 15 | exbidv 1848 |
. . . . . . . 8
|
| 17 | 16 | rexbidv 2507 |
. . . . . . 7
|
| 18 | 12 | seqeq3d 10600 |
. . . . . . . 8
|
| 19 | 18 | breq1d 4054 |
. . . . . . 7
|
| 20 | 17, 19 | anbi12d 473 |
. . . . . 6
|
| 21 | 5, 20 | anbi12d 473 |
. . . . 5
|
| 22 | 21 | rexbidv 2507 |
. . . 4
|
| 23 | f1oeq3 5512 |
. . . . . . 7
| |
| 24 | 23 | anbi1d 465 |
. . . . . 6
|
| 25 | 24 | exbidv 1848 |
. . . . 5
|
| 26 | 25 | rexbidv 2507 |
. . . 4
|
| 27 | 22, 26 | orbi12d 795 |
. . 3
|
| 28 | 27 | iotabidv 5254 |
. 2
|
| 29 | df-proddc 11862 |
. 2
| |
| 30 | df-proddc 11862 |
. 2
| |
| 31 | 28, 29, 30 | 3eqtr4g 2263 |
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-in1 615 ax-in2 616 ax-io 711 ax-5 1470 ax-7 1471 ax-gen 1472 ax-ie1 1516 ax-ie2 1517 ax-8 1527 ax-10 1528 ax-11 1529 ax-i12 1530 ax-bndl 1532 ax-4 1533 ax-17 1549 ax-i9 1553 ax-ial 1557 ax-i5r 1558 ax-ext 2187 |
| This theorem depends on definitions: df-bi 117 df-dc 837 df-3an 983 df-tru 1376 df-nf 1484 df-sb 1786 df-clab 2192 df-cleq 2198 df-clel 2201 df-nfc 2337 df-ral 2489 df-rex 2490 df-v 2774 df-un 3170 df-in 3172 df-ss 3179 df-if 3572 df-sn 3639 df-pr 3640 df-op 3642 df-uni 3851 df-br 4045 df-opab 4106 df-mpt 4107 df-cnv 4683 df-dm 4685 df-rn 4686 df-res 4687 df-iota 5232 df-f 5275 df-f1 5276 df-fo 5277 df-f1o 5278 df-fv 5279 df-ov 5947 df-oprab 5948 df-mpo 5949 df-recs 6391 df-frec 6477 df-seqfrec 10593 df-proddc 11862 |
| This theorem is referenced by: prodeq1 11864 |
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