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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 2349 | . 2 ⊢ Ⅎ𝑘𝐴 | |
| 3 | nfcv 2349 | . 2 ⊢ Ⅎ𝑗𝐴 | |
| 4 | cbvprodi.1 | . 2 ⊢ Ⅎ𝑘𝐵 | |
| 5 | cbvprodi.2 | . 2 ⊢ Ⅎ𝑗𝐶 | |
| 6 | 1, 2, 3, 4, 5 | cbvprod 11954 | 1 ⊢ ∏𝑗 ∈ 𝐴 𝐵 = ∏𝑘 ∈ 𝐴 𝐶 |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1373 Ⅎwnfc 2336 ∏cprod 11946 |
| 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 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-ext 2188 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ral 2490 df-rex 2491 df-rab 2494 df-v 2775 df-sbc 3003 df-csb 3098 df-un 3174 df-in 3176 df-ss 3183 df-if 3576 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3860 df-br 4055 df-opab 4117 df-mpt 4118 df-cnv 4696 df-dm 4698 df-rn 4699 df-res 4700 df-iota 5246 df-fv 5293 df-ov 5965 df-oprab 5966 df-mpo 5967 df-recs 6409 df-frec 6495 df-seqfrec 10625 df-proddc 11947 |
| This theorem is referenced by: prodfct 11983 prodsnf 11988 fprodm1s 11997 fprodp1s 11998 prodsns 11999 fprodcllemf 12009 fprod2dlemstep 12018 fprodcom2fi 12022 fproddivapf 12027 fprodsplitf 12028 |
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