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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 2765 | . . . 4 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 3 | 2 | fmpt 7109 | . . 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 3259 | 1 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝐶) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2146 ∀wral 3081 ↦ cmpt 5194 ⟶wf 6536 |
| 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-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-pr 5406 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-fun 6542 df-fn 6543 df-f 6544 |
| This theorem is used by: rlimmptrcl 15683 lo1mptrcl 15697 o1mptrcl 15698 frlmgsum 21972 uvcresum 21993 psrass1lem 22133 txcnp 23828 ptcnp 23830 ptcn 23835 cnmpt11 23871 cnmpt1t 23873 cnmpt12 23875 cnmptkp 23888 cnmptk1 23889 cnmptkk 23891 cnmptk1p 23893 cnmptk2 23894 cnmpt1plusg 24295 cnmpt1vsca 24402 cnmpt1ds 25051 cncfcompt2 25118 cncfmpt2ss 25126 cnmpt1ip 25457 divcncf 25657 mbfmptcl 25846 i1fposd 25917 itgss3 26025 dvmptcl 26169 dvmptco 26182 dvle 26217 dvfsumle 26231 dvfsumge 26232 dvmptrecl 26234 itgparts 26257 itgsubstlem 26258 itgsubst 26259 ulmss 26611 ulmdvlem2 26615 itgulm2 26623 logtayl 26876 intlewftc 42886 cncfcompt 46655 cncficcgt0 46660 itgsubsticclem 46747 sge0iunmptlemre 47187 hoicvrrex 47328 smfadd 47537 smfpimioompt 47558 |
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