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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcrcl2 | Structured version Visualization version GIF version | ||
| Description: Reverse closure for a functor. (Contributed by Zhi Wang, 17-Sep-2025.) |
| Ref | Expression |
|---|---|
| funcrcl2.f | ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) |
| Ref | Expression |
|---|---|
| funcrcl2 | ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcrcl2.f | . . 3 ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) | |
| 2 | df-br 5103 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 219 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 18047 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 19 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simpld 500 | 1 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2144 〈cop 4834 class class class wbr 5102 (class class class)co 7424 Catccat 17847 Func cfunc 18038 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-xp 5657 df-dm 5661 df-iota 6497 df-fv 6551 df-ov 7427 df-oprab 7428 df-mpo 7429 df-func 18042 |
| This theorem is used by: cofid1a 50336 cofid2a 50337 cofidvala 50340 cofidf2a 50341 cofidval 50343 imaid 50378 imaf1co 50379 fthcomf 50381 upciclem3 50392 upciclem4 50393 upeu 50395 upeu2 50396 uobrcl 50417 upeu4 50420 uptrlem1 50434 natoppfb 50461 fuco11 50556 fuco11cl 50557 fuco21 50566 fuco11b 50567 fuco11bALT 50568 fucoid 50578 fucolid 50591 fucorid 50592 postcofval 50604 postcofcl 50605 precofval 50610 precofvalALT 50611 precofcl 50613 prcof1 50631 prcof2a 50632 prcof2 50633 prcofdiag1 50636 prcofdiag 50637 fucoppclem 50650 fucoppcid 50651 thincciso2 50698 isinito2 50742 isinito3 50743 eufunclem 50764 funcsn 50787 cofuterm 50791 isinito4 50793 lanval 50910 ranval 50911 lmdpropd 50948 cmdpropd 50949 concl 50952 coccl 50953 concom 50954 coccom 50955 islmd 50956 iscmd 50957 |
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