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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 3250 |
. . . . . . 7
| |
| 2 | eleq2 2295 |
. . . . . . . . 9
| |
| 3 | 2 | dcbid 845 |
. . . . . . . 8
|
| 4 | 3 | ralbidv 2532 |
. . . . . . 7
|
| 5 | 1, 4 | anbi12d 473 |
. . . . . 6
|
| 6 | prodeq1f.1 |
. . . . . . . . . . . . . 14
| |
| 7 | prodeq1f.2 |
. . . . . . . . . . . . . 14
| |
| 8 | 6, 7 | nfeq 2382 |
. . . . . . . . . . . . 13
|
| 9 | eleq2 2295 |
. . . . . . . . . . . . . . 15
| |
| 10 | 9 | ifbid 3627 |
. . . . . . . . . . . . . 14
|
| 11 | 10 | adantr 276 |
. . . . . . . . . . . . 13
|
| 12 | 8, 11 | mpteq2da 4178 |
. . . . . . . . . . . 12
|
| 13 | 12 | seqeq3d 10716 |
. . . . . . . . . . 11
|
| 14 | 13 | breq1d 4098 |
. . . . . . . . . 10
|
| 15 | 14 | anbi2d 464 |
. . . . . . . . 9
|
| 16 | 15 | exbidv 1873 |
. . . . . . . 8
|
| 17 | 16 | rexbidv 2533 |
. . . . . . 7
|
| 18 | 12 | seqeq3d 10716 |
. . . . . . . 8
|
| 19 | 18 | breq1d 4098 |
. . . . . . 7
|
| 20 | 17, 19 | anbi12d 473 |
. . . . . 6
|
| 21 | 5, 20 | anbi12d 473 |
. . . . 5
|
| 22 | 21 | rexbidv 2533 |
. . . 4
|
| 23 | f1oeq3 5573 |
. . . . . . 7
| |
| 24 | 23 | anbi1d 465 |
. . . . . 6
|
| 25 | 24 | exbidv 1873 |
. . . . 5
|
| 26 | 25 | rexbidv 2533 |
. . . 4
|
| 27 | 22, 26 | orbi12d 800 |
. . 3
|
| 28 | 27 | iotabidv 5309 |
. 2
|
| 29 | df-proddc 12111 |
. 2
| |
| 30 | df-proddc 12111 |
. 2
| |
| 31 | 28, 29, 30 | 3eqtr4g 2289 |
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 619 ax-in2 620 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-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-dc 842 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-if 3606 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-mpt 4152 df-cnv 4733 df-dm 4735 df-rn 4736 df-res 4737 df-iota 5286 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6020 df-oprab 6021 df-mpo 6022 df-recs 6470 df-frec 6556 df-seqfrec 10709 df-proddc 12111 |
| This theorem is referenced by: prodeq1 12113 |
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