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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 9298 ccatfvalfi 11375 swrdval 11435 odzval 13042 restval 13650 qusval 13695 grpinvfvalg 13898 grpinvpropdg 13931 prdsex 14223 prdsval 14224 opprnegg 14440 lspfval 14776 lsppropd 14820 sraval 14825 aspval 15066 asclfval 15072 ressascl 15090 psrval 15101 ntrfval 15253 clsfval 15254 neifval 15293 cnpfval 15348 cnprcl2k 15359 reldvg 15832 dvfvalap 15834 eldvap 15835 vtxdgfval 16651 vtxdgop 16655 vtxdeqd 16659 |
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