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| Mirrors > Home > ILE Home > Th. List > cbvsumv | GIF version | ||
| Description: Change bound variable in a sum. (Contributed by NM, 11-Dec-2005.) (Revised by Mario Carneiro, 13-Jul-2013.) |
| Ref | Expression |
|---|---|
| cbvsum.1 | ⊢ (𝑗 = 𝑘 → 𝐵 = 𝐶) |
| Ref | Expression |
|---|---|
| cbvsumv | ⊢ Σ𝑗 ∈ 𝐴 𝐵 = Σ𝑘 ∈ 𝐴 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cbvsum.1 | . 2 ⊢ (𝑗 = 𝑘 → 𝐵 = 𝐶) | |
| 2 | nfcv 2392 | . 2 ⊢ Ⅎ𝑘𝐴 | |
| 3 | nfcv 2392 | . 2 ⊢ Ⅎ𝑗𝐴 | |
| 4 | nfcv 2392 | . 2 ⊢ Ⅎ𝑘𝐵 | |
| 5 | nfcv 2392 | . 2 ⊢ Ⅎ𝑗𝐶 | |
| 6 | 1, 2, 3, 4, 5 | cbvsum 12126 | 1 ⊢ Σ𝑗 ∈ 𝐴 𝐵 = Σ𝑘 ∈ 𝐴 𝐶 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 Σcsu 12119 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-un 3224 df-in 3226 df-ss 3233 df-if 3639 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-mpt 4194 df-cnv 4782 df-dm 4784 df-rn 4785 df-res 4786 df-iota 5337 df-fv 5385 df-ov 6088 df-oprab 6089 df-mpo 6090 df-recs 6576 df-frec 6662 df-seqfrec 10885 df-sumdc 12120 |
| This theorem is used by: isumge0 12197 telfsumo 12233 fsumparts 12237 binomlem 12250 mertenslemi1 12302 mertenslem2 12303 mertensabs 12304 efaddlem 12441 plymullem1 15849 plyadd 15852 plymul 15853 plycoeid3 15858 plyco 15860 plycj 15862 dvply1 15866 trilpo 17092 redcwlpo 17105 nconstwlpo 17116 neapmkv 17118 |
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