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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 7504 | . 2 ⊢ (⊤ → (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐶) = (𝑥 ∈ 𝐴, 𝑦 ∈ 𝐵 ↦ 𝐷)) |
| 4 | 3 | mptru 1576 | 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 1569 ⊤wtru 1570 ∈ wcel 2146 ∈ cmpo 7429 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-9 2156 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-3an 1105 df-tru 1572 df-ex 1812 df-sb 2101 df-clab 2742 df-cleq 2755 df-oprab 7431 df-mpo 7432 |
| This theorem is used by: mpodifsnif 7542 mposnif 7543 oprab2co 8117 cnfcomlem 9710 cnfcom2 9713 dfioo2 13591 elovmpowrd 14713 sadcom 16645 comfffval2 17887 oppchomf 17906 symgga 19633 oppglsm 19868 dfrhm2 20716 cnfldsub 21718 cnflddiv 21720 mat0op 22746 mattpos1 22783 mdetunilem7 22945 madufval 22964 maducoeval2 22967 madugsum 22970 matunitlindflem1 23006 mp2pm2mplem5 23140 mp2pm2mp 23141 leordtval 23543 xpstopnlem1 24140 divcn 25201 oprpiece1res1 25284 oprpiece1res2 25285 ehl1eudis 25753 ehl2eudis 25755 cxpcn 27085 cnnvm 31296 issply 34246 mdetpmtr2 34509 madjusmdetlem1 34512 cnre2csqima 34596 mndpluscn 34611 raddcn 34614 icorempo 38414 mendplusgfval 44323 hoidmv1le 47743 hspdifhsp 47765 vonn0ioo 47836 vonn0icc 47837 dflinc2 49661 cofuoppf 50405 dfswapf2 50522 diag1a 50566 funcsetc1o 50771 |
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