| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > mpteq1 | Structured version Visualization version GIF version | ||
| Description: An equality theorem for the maps-to notation. (Contributed by Mario Carneiro, 16-Dec-2013.) (Proof shortened by SN, 11-Nov-2024.) |
| Ref | Expression |
|---|---|
| mpteq1 | ⊢ (𝐴 = 𝐵 → (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐵 ↦ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 23 | . 2 ⊢ (𝐴 = 𝐵 → 𝐴 = 𝐵) | |
| 2 | eqidd 2766 | . 2 ⊢ (𝐴 = 𝐵 → 𝐶 = 𝐶) | |
| 3 | 1, 2 | mpteq12dv 5200 | 1 ⊢ (𝐴 = 𝐵 → (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐵 ↦ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ↦ cmpt 5194 |
| 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-8 2148 ax-9 2156 ax-ext 2737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-opab 5176 df-mpt 5195 |
| This theorem is used by: mpteq1d 5203 tposf12 8249 oarec 8549 wunex2 10734 wuncval2 10743 indv 12231 vrmdfval 18939 pmtrfval 19544 sylow1 19697 sylow2b 19717 sylow3lem5 19725 sylow3 19727 gsumconst 20028 gsum2dlem2 20065 gsumfsum 21614 mvrfval 22160 mplcoe1 22218 mplcoe5 22221 evlsval 22267 coe1fzgsumd 22494 evls1fval 22509 evl1gsumd 22547 mavmul0 22739 madugsum 22830 cramer0 22877 cnmpt1t 23853 cnmpt2t 23861 fmval 24131 symgtgp 24294 prdstgpd 24313 suppgsumssiun 33432 gsumvsca1 33586 gsumvsca2 33587 domnprodeq0 33639 qusima 33757 qusrn 33758 nsgmgc 33761 nsgqusf1olem2 33763 deg1prod 33913 psrgsum 33978 psrmonprod 33982 vieta 34010 gsumesum 34489 esumlub 34490 esum2d 34523 sitg0 34777 matunitlindflem1 38300 matunitlindf 38302 sdclem2 38426 evl1gprodd 42917 idomnnzgmulnz 42933 deg1gprod 42940 fsovcnvlem 44772 ntrneibex 44832 stoweidlem9 46756 sge0sn 47126 sge0iunmptlemfi 47160 sge0isum 47174 ovn02 47315 |
| Copyright terms: Public domain | W3C validator |