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| Mirrors > Home > MPE Home > Th. List > mpoeq3ia | Structured version Visualization version GIF version | ||
| Description: An equality inference for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.) |
| Ref | Expression |
|---|---|
| mpoeq3ia.1 | ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝐶 = 𝐷) |
| Ref | Expression |
|---|---|
| mpoeq3ia | ⊢ (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mpoeq3ia.1 | . . . 4 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝐶 = 𝐷) | |
| 2 | 1 | 3adant1 1148 | . . 3 ⊢ ((⊤ ∧ 𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝐶 = 𝐷) |
| 3 | 2 | mpoeq3dva 7497 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐷)) |
| 4 | 3 | mptru 1577 | 1 ⊢ (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ⊤wtru 1571 ∈ wcel 2145 ∈ cmpo 7422 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-9 2155 ax-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-3an 1105 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-oprab 7424 df-mpo 7425 |
| This theorem is used by: mpodifsnif 7535 mposnif 7536 oprab2co 8108 cnfcomlem 9700 cnfcom2 9703 dfioo2 13581 elovmpowrd 14703 sadcom 16633 comfffval2 17875 oppchomf 17894 symgga 19621 oppglsm 19856 dfrhm2 20704 cnfldsub 21706 cnflddiv 21708 mat0op 22734 mattpos1 22771 mdetunilem7 22933 madufval 22952 maducoeval2 22955 madugsum 22958 matunitlindflem1 22994 mp2pm2mplem5 23128 mp2pm2mp 23129 leordtval 23531 xpstopnlem1 24128 divcn 25189 oprpiece1res1 25272 oprpiece1res2 25273 ehl1eudis 25741 ehl2eudis 25743 cxpcn 27073 cnnvm 31284 issply 34193 mdetpmtr2 34456 madjusmdetlem1 34459 cnre2csqima 34543 mndpluscn 34558 raddcn 34561 icorempo 38274 mendplusgfval 44182 hoidmv1le 47603 hspdifhsp 47625 vonn0ioo 47696 vonn0icc 47697 dflinc2 49521 cofuoppf 50257 dfswapf2 50368 diag1a 50412 funcsetc1o 50604 |
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