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| 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 2761 | . 2 ⊢ (𝐴 = 𝐵 → 𝐶 = 𝐶) | |
| 3 | 1, 2 | mpteq12dv 5191 | 1 ⊢ (𝐴 = 𝐵 → (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐵 ↦ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ↦ cmpt 5185 |
| 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 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-opab 5167 df-mpt 5186 |
| This theorem is used by: mpteq1d 5194 tposf12 8273 oarec 8575 wunex2 10828 wuncval2 10837 indv 12327 vrmdfval 19059 pmtrfval 19671 sylow1 19824 sylow2b 19844 sylow3lem5 19852 sylow3 19854 gsumconst 20155 gsum2dlem2 20192 gsumfsum 21747 mvrfval 22295 mplcoe1 22353 mplcoe5 22356 evlsval 22402 coe1fzgsumd 22629 evls1fval 22644 evl1gsumd 22682 mavmul0 22874 madugsum 22965 matunitlindflem1 23001 matunitlindf 23003 cramer0 23015 cnmpt1t 23991 cnmpt2t 23999 fmval 24269 symgtgp 24432 prdstgpd 24451 suppgsumssiun 33681 gsumvsca1 33835 gsumvsca2 33836 domnprodeq0 33888 qusima 34007 qusrn 34008 nsgmgc 34011 nsgqusf1olem2 34013 deg1prod 34163 psrgsum 34228 psrmonprod 34232 vieta 34260 gsumesum 34739 esumlub 34740 esum2d 34773 sitg0 35026 sdclem2 38783 evl1gprodd 43274 idomnnzgmulnz 43290 deg1gprod 43297 fsovcnvlem 45120 ntrneibex 45180 stoweidlem9 47126 sge0sn 47496 sge0iunmptlemfi 47530 sge0isum 47544 ovn02 47685 |
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