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Mirrors > Home > MPE Home > Th. List > mpoeq123i | Structured version Visualization version GIF version |
Description: An equality inference for the maps-to notation. (Contributed by NM, 15-Jul-2013.) |
Ref | Expression |
---|---|
mpoeq123i.1 | ⊢ 𝐴 = 𝐷 |
mpoeq123i.2 | ⊢ 𝐵 = 𝐸 |
mpoeq123i.3 | ⊢ 𝐶 = 𝐹 |
Ref | Expression |
---|---|
mpoeq123i | ⊢ (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐷, 𝑦 ∈ 𝐸 ↦ 𝐹) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mpoeq123i.1 | . . . 4 ⊢ 𝐴 = 𝐷 | |
2 | 1 | a1i 11 | . . 3 ⊢ (⊤ → 𝐴 = 𝐷) |
3 | mpoeq123i.2 | . . . 4 ⊢ 𝐵 = 𝐸 | |
4 | 3 | a1i 11 | . . 3 ⊢ (⊤ → 𝐵 = 𝐸) |
5 | mpoeq123i.3 | . . . 4 ⊢ 𝐶 = 𝐹 | |
6 | 5 | a1i 11 | . . 3 ⊢ (⊤ → 𝐶 = 𝐹) |
7 | 2, 4, 6 | mpoeq123dv 7208 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐷, 𝑦 ∈ 𝐸 ↦ 𝐹)) |
8 | 7 | mptru 1545 | 1 ⊢ (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐷, 𝑦 ∈ 𝐸 ↦ 𝐹) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1538 ⊤wtru 1539 ∈ cmpo 7137 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-oprab 7139 df-mpo 7140 |
This theorem is referenced by: ofmres 7667 seqval 13375 oppgtmd 22702 wlkson 27446 mdetlap1 31179 sdc 35182 tgrpset 38041 mendvscafval 40134 fsovcnvlem 40714 hspmbl 43268 |
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