| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > cbvprodi | Structured version Visualization version 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 2922 | . 2 ⊢ Ⅎ𝑘𝐴 | |
| 3 | nfcv 2922 | . 2 ⊢ Ⅎ𝑗𝐴 | |
| 4 | cbvprodi.1 | . 2 ⊢ Ⅎ𝑘𝐵 | |
| 5 | cbvprodi.2 | . 2 ⊢ Ⅎ𝑗𝐶 | |
| 6 | 1, 2, 3, 4, 5 | cbvprod 16091 | 1 ⊢ ∏𝑗 ∈ 𝐴 𝐵 = ∏𝑘 ∈ 𝐴 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 Ⅎwnfc 2907 ∏cprod 16081 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3848 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-xp 5657 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6307 df-iota 6497 df-fv 6551 df-ov 7427 df-oprab 7428 df-mpo 7429 df-frecs 8307 df-wrecs 8338 df-recs 8387 df-rdg 8426 df-seq 14152 df-prod 16082 |
| This theorem is used by: prodfc 16121 fprodcllemf 16134 prodsn 16138 prodsnf 16140 fprodm1s 16146 fprodp1s 16147 prodsns 16148 fprod2dlem 16156 fprodcom2 16160 fproddivf 16163 fprodsplitf 16164 |
| Copyright terms: Public domain | W3C validator |