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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 7496 | . 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 2146 ∈ cmpo 7421 |
| 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 2156 ax-ext 2737 |
| 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 2744 df-cleq 2757 df-oprab 7423 df-mpo 7424 |
| This theorem is used by: mpodifsnif 7534 mposnif 7535 oprab2co 8098 cnfcomlem 9675 cnfcom2 9678 dfioo2 13495 elovmpowrd 14615 sadcom 16545 comfffval2 17781 oppchomf 17800 symgga 19523 oppglsm 19758 dfrhm2 20604 cnfldsub 21602 cnflddiv 21604 mat0op 22628 mattpos1 22665 mdetunilem7 22827 madufval 22846 maducoeval2 22849 madugsum 22852 mp2pm2mplem5 23019 mp2pm2mp 23020 leordtval 23422 xpstopnlem1 24019 divcn 25080 oprpiece1res1 25163 oprpiece1res2 25164 ehl1eudis 25632 ehl2eudis 25634 cxpcn 26963 cnnvm 31107 issply 34017 mdetpmtr2 34280 madjusmdetlem1 34283 cnre2csqima 34367 mndpluscn 34382 raddcn 34385 icorempo 38056 matunitlindflem1 38326 mendplusgfval 43968 hoidmv1le 47368 hspdifhsp 47390 vonn0ioo 47461 vonn0icc 47462 dflinc2 49249 cofuoppf 49987 dfswapf2 50098 diag1a 50142 funcsetc1o 50334 |
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