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| Mirrors > Home > MPE Home > Th. List > arwdm | Structured version Visualization version GIF version | ||
| Description: The domain of an arrow is an object. (Contributed by Mario Carneiro, 11-Jan-2017.) |
| Ref | Expression |
|---|---|
| arwrcl.a | ⊢ 𝐴 = (Arrow‘𝐶) |
| arwdm.b | ⊢ 𝐵 = (Base‘𝐶) |
| Ref | Expression |
|---|---|
| arwdm | ⊢ (𝐹 ∈ 𝐴 → (doma‘𝐹) ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | arwrcl.a | . . . 4 ⊢ 𝐴 = (Arrow‘𝐶) | |
| 2 | eqid 2762 | . . . 4 ⊢ (Homa‘𝐶) = (Homa‘𝐶) | |
| 3 | 1, 2 | arwhoma 18138 | . . 3 ⊢ (𝐹 ∈ 𝐴 → 𝐹 ∈ ((doma‘𝐹)(Homa‘𝐶)(coda‘𝐹))) |
| 4 | arwdm.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 5 | 2, 4 | homarcl2 18128 | . . 3 ⊢ (𝐹 ∈ ((doma‘𝐹)(Homa‘𝐶)(coda‘𝐹)) → ((doma‘𝐹) ∈ 𝐵 ∧ (coda‘𝐹) ∈ 𝐵)) |
| 6 | 3, 5 | syl 18 | . 2 ⊢ (𝐹 ∈ 𝐴 → ((doma‘𝐹) ∈ 𝐵 ∧ (coda‘𝐹) ∈ 𝐵)) |
| 7 | 6 | simpld 500 | 1 ⊢ (𝐹 ∈ 𝐴 → (doma‘𝐹) ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ‘cfv 6537 (class class class)co 7416 Basecbs 17305 domacdoma 18113 codaccoda 18114 Arrowcarw 18115 Homachoma 18116 |
| 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 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-1st 7989 df-2nd 7990 df-doma 18117 df-coda 18118 df-homa 18119 df-arw 18120 |
| This theorem is used by: dmaf 18142 termcarweu 50441 arweutermc 50443 |
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