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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 7491 | . 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 7416 |
| 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 2732 |
| 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 2739 df-cleq 2752 df-oprab 7418 df-mpo 7419 |
| This theorem is used by: mpodifsnif 7529 mposnif 7530 oprab2co 8095 cnfcomlem 9681 cnfcom2 9684 dfioo2 13506 elovmpowrd 14626 sadcom 16556 comfffval2 17792 oppchomf 17811 symgga 19537 oppglsm 19772 dfrhm2 20618 cnfldsub 21616 cnflddiv 21618 mat0op 22644 mattpos1 22681 mdetunilem7 22843 madufval 22862 maducoeval2 22865 madugsum 22868 matunitlindflem1 22904 mp2pm2mplem5 23038 mp2pm2mp 23039 leordtval 23441 xpstopnlem1 24038 divcn 25099 oprpiece1res1 25182 oprpiece1res2 25183 ehl1eudis 25651 ehl2eudis 25653 cxpcn 26985 cnnvm 31166 issply 34074 mdetpmtr2 34337 madjusmdetlem1 34340 cnre2csqima 34424 mndpluscn 34439 raddcn 34442 icorempo 38108 mendplusgfval 44025 hoidmv1le 47425 hspdifhsp 47447 vonn0ioo 47518 vonn0icc 47519 dflinc2 49343 cofuoppf 50079 dfswapf2 50190 diag1a 50234 funcsetc1o 50426 |
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