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| Mirrors > Home > MPE Home > Th. List > Mathboxes > mptfcl | Structured version Visualization version GIF version | ||
| Description: Interpret range of a maps-to notation as a constraint on the definition. (Contributed by Stefan O'Rear, 10-Oct-2014.) |
| Ref | Expression |
|---|---|
| mptfcl | ⊢ ((𝑡 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶 → (𝑡 ∈ 𝐴 → 𝐵 ∈ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2760 | . . 3 ⊢ (𝑡 ∈ 𝐴 ↦ 𝐵) = (𝑡 ∈ 𝐴 ↦ 𝐵) | |
| 2 | 1 | fmpt 7103 | . 2 ⊢ (∀𝑡 ∈ 𝐴 𝐵 ∈ 𝐶 ↔ (𝑡 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶) |
| 3 | rsp 3250 | . 2 ⊢ (∀𝑡 ∈ 𝐴 𝐵 ∈ 𝐶 → (𝑡 ∈ 𝐴 → 𝐵 ∈ 𝐶)) | |
| 4 | 2, 3 | sylbir 238 | 1 ⊢ ((𝑡 ∈ 𝐴 ↦ 𝐵):𝐴⟶𝐶 → (𝑡 ∈ 𝐴 → 𝐵 ∈ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ∀wral 3076 ↦ cmpt 5186 ⟶wf 6529 |
| 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 2732 ax-sep 5251 ax-pr 5398 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 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 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-fun 6535 df-fn 6536 df-f 6537 |
| This theorem is used by: mzpsubmpt 43588 eq0rabdioph 43621 eqrabdioph 43622 |
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