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| Mirrors > Home > MPE Home > Th. List > fvmptelcdm | 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 |
|---|---|
| fvmptelcdm.1 | ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) |
| Ref | Expression |
|---|---|
| fvmptelcdm | ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvmptelcdm.1 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) | |
| 2 | eqid 2761 | . . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 3 | 2 | fmpt 7108 | . . 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 3255 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 ∀wral 3077 ↦ cmpt 5186 ⟶wf 6533 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-fun 6539 df-fn 6540 df-f 6541 |
| This theorem is used by: rlimmptrcl 15768 lo1mptrcl 15782 o1mptrcl 15783 frlmgsum 22071 uvcresum 22092 psrass1lem 22234 txcnp 23932 ptcnp 23934 ptcn 23939 cnmpt11 23975 cnmpt1t 23977 cnmpt12 23979 cnmptkp 23992 cnmptk1 23993 cnmptkk 23995 cnmptk1p 23997 cnmptk2 23998 cnmpt1plusg 24399 cnmpt1vsca 24506 cnmpt1ds 25155 cncfcompt2 25222 cncfmpt2ss 25230 cnmpt1ip 25561 divcncf 25761 mbfmptcl 25950 i1fposd 26021 itgss3 26128 dvmptcl 26272 dvmptco 26285 dvle 26320 dvfsumle 26334 dvfsumge 26335 dvmptrecl 26337 itgparts 26360 itgsubstlem 26361 itgsubst 26362 ulmss 26717 ulmdvlem2 26721 itgulm2 26729 logtayl 26981 intlewftc 43091 cncfcompt 46862 cncficcgt0 46867 itgsubsticclem 46954 sge0iunmptlemre 47394 hoicvrrex 47535 smfadd 47744 smfpimioompt 47765 |
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