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Mirrors > Home > ILE Home > Th. List > cbvprodi | GIF version |
Description: Change bound variable in a product. (Contributed by Scott Fenton, 4-Dec-2017.) |
Ref | Expression |
---|---|
cbvprodi.1 | ⊢ Ⅎ𝑘𝐵 |
cbvprodi.2 | ⊢ Ⅎ𝑗𝐶 |
cbvprodi.3 | ⊢ (𝑗 = 𝑘 → 𝐵 = 𝐶) |
Ref | Expression |
---|---|
cbvprodi | ⊢ ∏𝑗 ∈ 𝐴 𝐵 = ∏𝑘 ∈ 𝐴 𝐶 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cbvprodi.3 | . 2 ⊢ (𝑗 = 𝑘 → 𝐵 = 𝐶) | |
2 | nfcv 2308 | . 2 ⊢ Ⅎ𝑘𝐴 | |
3 | nfcv 2308 | . 2 ⊢ Ⅎ𝑗𝐴 | |
4 | cbvprodi.1 | . 2 ⊢ Ⅎ𝑘𝐵 | |
5 | cbvprodi.2 | . 2 ⊢ Ⅎ𝑗𝐶 | |
6 | 1, 2, 3, 4, 5 | cbvprod 11499 | 1 ⊢ ∏𝑗 ∈ 𝐴 𝐵 = ∏𝑘 ∈ 𝐴 𝐶 |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1343 Ⅎwnfc 2295 ∏cprod 11491 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-ext 2147 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-ral 2449 df-rex 2450 df-rab 2453 df-v 2728 df-sbc 2952 df-csb 3046 df-un 3120 df-in 3122 df-ss 3129 df-if 3521 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-mpt 4045 df-cnv 4612 df-dm 4614 df-rn 4615 df-res 4616 df-iota 5153 df-fv 5196 df-ov 5845 df-oprab 5846 df-mpo 5847 df-recs 6273 df-frec 6359 df-seqfrec 10381 df-proddc 11492 |
This theorem is referenced by: prodfct 11528 prodsnf 11533 fprodm1s 11542 fprodp1s 11543 prodsns 11544 fprodcllemf 11554 fprod2dlemstep 11563 fprodcom2fi 11567 fproddivapf 11572 fprodsplitf 11573 |
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