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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 12151 | 1 ⊢ Σ𝑗 ∈ 𝐴 𝐵 = Σ𝑘 ∈ 𝐴 𝐶 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 Σcsu 12144 |
| 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 4132 df-opab 4194 df-mpt 4195 df-cnv 4784 df-dm 4786 df-rn 4787 df-res 4788 df-iota 5340 df-fv 5388 df-ov 6091 df-oprab 6092 df-mpo 6093 df-recs 6580 df-frec 6666 df-seqfrec 10906 df-sumdc 12145 |
| This theorem is used by: isumge0 12222 telfsumo 12258 fsumparts 12262 binomlem 12275 mertenslemi1 12327 mertenslem2 12328 mertensabs 12329 efaddlem 12466 plymullem1 15974 plyadd 15977 plymul 15978 plycoeid3 15983 plyco 15985 plycj 15987 dvply1 15991 trilpo 17299 redcwlpo 17312 nconstwlpo 17323 neapmkv 17325 |
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