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| Mirrors > Home > ILE Home > Th. List > mpteq12dv | GIF version | ||
| Description: An equality inference for the maps-to notation. (Contributed by NM, 24-Aug-2011.) (Revised by Mario Carneiro, 16-Dec-2013.) |
| Ref | Expression |
|---|---|
| mpteq12dv.1 | ⊢ (𝜑 → 𝐴 = 𝐶) |
| mpteq12dv.2 | ⊢ (𝜑 → 𝐵 = 𝐷) |
| Ref | Expression |
|---|---|
| mpteq12dv | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐶 ↦ 𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpteq12dv.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐶) | |
| 2 | mpteq12dv.2 | . . 3 ⊢ (𝜑 → 𝐵 = 𝐷) | |
| 3 | 2 | adantr 276 | . 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 = 𝐷) |
| 4 | 1, 3 | mpteq12dva 4212 | 1 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐶 ↦ 𝐷)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 ↦ cmpt 4192 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 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-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-ral 2533 df-opab 4193 df-mpt 4194 |
| This theorem is used by: mpteq12i 4219 offval 6310 offval3 6367 indv 9296 ccatfvalfi 11362 swrdval 11422 odzval 13022 restval 13601 qusval 13646 grpinvfvalg 13849 grpinvpropdg 13882 prdsex 14174 prdsval 14175 opprnegg 14391 lspfval 14727 lsppropd 14771 sraval 14776 aspval 15017 asclfval 15023 ressascl 15041 psrval 15052 ntrfval 15203 clsfval 15204 neifval 15243 cnpfval 15298 cnprcl2k 15309 reldvg 15782 dvfvalap 15784 eldvap 15785 vtxdgfval 16541 vtxdgop 16545 vtxdeqd 16549 |
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