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Mirrors > Home > MPE Home > Th. List > fvmptelrn | Structured version Visualization version GIF version |
Description: The value of a function at a point of its domain belongs to its codomain. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
Ref | Expression |
---|---|
fvmptelrn.1 | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) |
Ref | Expression |
---|---|
fvmptelrn | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fvmptelrn.1 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) | |
2 | eqid 2798 | . . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
3 | 2 | fmpt 6851 | . . 3 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) |
4 | 1, 3 | sylibr 237 | . 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝐶) |
5 | 4 | r19.21bi 3173 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2111 ∀wral 3106 ↦ cmpt 5110 ⟶wf 6320 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-sbc 3721 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-fv 6332 |
This theorem is referenced by: rlimmptrcl 14956 lo1mptrcl 14970 o1mptrcl 14971 frlmgsum 20461 uvcresum 20482 psrass1lem 20615 txcnp 22225 ptcnp 22227 ptcn 22232 cnmpt11 22268 cnmpt1t 22270 cnmpt12 22272 cnmptkp 22285 cnmptk1 22286 cnmptkk 22288 cnmptk1p 22290 cnmptk2 22291 cnmpt1plusg 22692 cnmpt1vsca 22799 cnmpt1ds 23447 cncfcompt2 23513 cncfmpt2ss 23521 cnmpt1ip 23851 divcncf 24051 mbfmptcl 24240 i1fposd 24311 itgss3 24418 dvmptcl 24562 dvmptco 24575 dvle 24610 dvfsumle 24624 dvfsumge 24625 dvmptrecl 24627 itgparts 24650 itgsubstlem 24651 itgsubst 24652 ulmss 24992 ulmdvlem2 24996 itgulm2 25004 logtayl 25251 intlewftc 39344 cncfcompt 42525 cncficcgt0 42530 itgsubsticclem 42617 sge0iunmptlemre 43054 hoicvrrex 43195 smfadd 43398 smfpimioompt 43418 smfsupmpt 43446 smfinfmpt 43450 |
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