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| Mirrors > Home > MPE Home > Th. List > Mathboxes > catcrcl | Structured version Visualization version GIF version | ||
| Description: Reverse closure for the category of categories (in a universe) (Contributed by Zhi Wang, 14-Nov-2025.) |
| Ref | Expression |
|---|---|
| catcrcl.c | ⊢ 𝐶 = (CatCat‘𝑈) |
| catcrcl.h | ⊢ 𝐻 = (Hom ‘𝐶) |
| catcrcl.f | ⊢ (𝜑 → 𝐹 ∈ (𝑋𝐻𝑌)) |
| Ref | Expression |
|---|---|
| catcrcl | ⊢ (𝜑 → 𝑈 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | catcrcl.f | . 2 ⊢ (𝜑 → 𝐹 ∈ (𝑋𝐻𝑌)) | |
| 2 | elfvne0 48837 | . . 3 ⊢ (𝐹 ∈ (𝐻‘〈𝑋, 𝑌〉) → 𝐻 ≠ ∅) | |
| 3 | df-ov 7390 | . . 3 ⊢ (𝑋𝐻𝑌) = (𝐻‘〈𝑋, 𝑌〉) | |
| 4 | 2, 3 | eleq2s 2846 | . 2 ⊢ (𝐹 ∈ (𝑋𝐻𝑌) → 𝐻 ≠ ∅) |
| 5 | catcrcl.c | . . . . 5 ⊢ 𝐶 = (CatCat‘𝑈) | |
| 6 | fvprc 6850 | . . . . 5 ⊢ (¬ 𝑈 ∈ V → (CatCat‘𝑈) = ∅) | |
| 7 | 5, 6 | eqtrid 2776 | . . . 4 ⊢ (¬ 𝑈 ∈ V → 𝐶 = ∅) |
| 8 | fveq2 6858 | . . . . 5 ⊢ (𝐶 = ∅ → (Hom ‘𝐶) = (Hom ‘∅)) | |
| 9 | catcrcl.h | . . . . 5 ⊢ 𝐻 = (Hom ‘𝐶) | |
| 10 | homid 17375 | . . . . . 6 ⊢ Hom = Slot (Hom ‘ndx) | |
| 11 | 10 | str0 17159 | . . . . 5 ⊢ ∅ = (Hom ‘∅) |
| 12 | 8, 9, 11 | 3eqtr4g 2789 | . . . 4 ⊢ (𝐶 = ∅ → 𝐻 = ∅) |
| 13 | 7, 12 | syl 17 | . . 3 ⊢ (¬ 𝑈 ∈ V → 𝐻 = ∅) |
| 14 | 13 | necon1ai 2952 | . 2 ⊢ (𝐻 ≠ ∅ → 𝑈 ∈ V) |
| 15 | 1, 4, 14 | 3syl 18 | 1 ⊢ (𝜑 → 𝑈 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 Vcvv 3447 ∅c0 4296 〈cop 4595 ‘cfv 6511 (class class class)co 7387 ndxcnx 17163 Hom chom 17231 CatCatccatc 18060 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-om 7843 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-ltxr 11213 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-5 12252 df-6 12253 df-7 12254 df-8 12255 df-9 12256 df-n0 12443 df-dec 12650 df-slot 17152 df-ndx 17164 df-hom 17244 |
| This theorem is referenced by: catcrcl2 49385 elcatchom 49386 catcsect 49387 |
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