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| Mirrors > Home > MPE Home > Th. List > Mathboxes > postc | Structured version Visualization version GIF version | ||
| Description: The converted category is a poset iff no distinct objects are isomorphic. (Contributed by Zhi Wang, 25-Sep-2024.) |
| Ref | Expression |
|---|---|
| postc.c | ⊢ (𝜑 → 𝐶 = (ProsetToCat‘𝐾)) |
| postc.k | ⊢ (𝜑 → 𝐾 ∈ Proset ) |
| postc.b | ⊢ 𝐵 = (Base‘𝐶) |
| Ref | Expression |
|---|---|
| postc | ⊢ (𝜑 → (𝐶 ∈ Poset ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥( ≃𝑐 ‘𝐶)𝑦 → 𝑥 = 𝑦))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | postc.c | . . . 4 ⊢ (𝜑 → 𝐶 = (ProsetToCat‘𝐾)) | |
| 2 | postc.k | . . . 4 ⊢ (𝜑 → 𝐾 ∈ Proset ) | |
| 3 | 1, 2 | prstcprs 49438 | . . 3 ⊢ (𝜑 → 𝐶 ∈ Proset ) |
| 4 | postc.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐶) | |
| 5 | eqid 2730 | . . . . 5 ⊢ (le‘𝐶) = (le‘𝐶) | |
| 6 | 4, 5 | ispos2 18282 | . . . 4 ⊢ (𝐶 ∈ Poset ↔ (𝐶 ∈ Proset ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) → 𝑥 = 𝑦))) |
| 7 | 6 | baib 535 | . . 3 ⊢ (𝐶 ∈ Proset → (𝐶 ∈ Poset ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) → 𝑥 = 𝑦))) |
| 8 | 3, 7 | syl 17 | . 2 ⊢ (𝜑 → (𝐶 ∈ Poset ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) → 𝑥 = 𝑦))) |
| 9 | 1 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝐶 = (ProsetToCat‘𝐾)) |
| 10 | 2 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝐾 ∈ Proset ) |
| 11 | 9, 10 | prstcthin 49439 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝐶 ∈ ThinCat) |
| 12 | simprl 770 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑥 ∈ 𝐵) | |
| 13 | simprr 772 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ 𝐵) | |
| 14 | eqid 2730 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 15 | 11, 4, 12, 13, 14 | thinccic 49349 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥( ≃𝑐 ‘𝐶)𝑦 ↔ ((𝑥(Hom ‘𝐶)𝑦) ≠ ∅ ∧ (𝑦(Hom ‘𝐶)𝑥) ≠ ∅))) |
| 16 | eqidd 2731 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (le‘𝐶) = (le‘𝐶)) | |
| 17 | eqidd 2731 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (Hom ‘𝐶) = (Hom ‘𝐶)) | |
| 18 | 12, 4 | eleqtrdi 2839 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑥 ∈ (Base‘𝐶)) |
| 19 | 13, 4 | eleqtrdi 2839 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ (Base‘𝐶)) |
| 20 | 9, 10, 16, 17, 18, 19 | prstchom 49440 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(le‘𝐶)𝑦 ↔ (𝑥(Hom ‘𝐶)𝑦) ≠ ∅)) |
| 21 | 9, 10, 16, 17, 19, 18 | prstchom 49440 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑦(le‘𝐶)𝑥 ↔ (𝑦(Hom ‘𝐶)𝑥) ≠ ∅)) |
| 22 | 20, 21 | anbi12d 632 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) ↔ ((𝑥(Hom ‘𝐶)𝑦) ≠ ∅ ∧ (𝑦(Hom ‘𝐶)𝑥) ≠ ∅))) |
| 23 | 15, 22 | bitr4d 282 | . . . 4 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥( ≃𝑐 ‘𝐶)𝑦 ↔ (𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥))) |
| 24 | 23 | imbi1d 341 | . . 3 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑥( ≃𝑐 ‘𝐶)𝑦 → 𝑥 = 𝑦) ↔ ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) → 𝑥 = 𝑦))) |
| 25 | 24 | 2ralbidva 3201 | . 2 ⊢ (𝜑 → (∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥( ≃𝑐 ‘𝐶)𝑦 → 𝑥 = 𝑦) ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ((𝑥(le‘𝐶)𝑦 ∧ 𝑦(le‘𝐶)𝑥) → 𝑥 = 𝑦))) |
| 26 | 8, 25 | bitr4d 282 | 1 ⊢ (𝜑 → (𝐶 ∈ Poset ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥( ≃𝑐 ‘𝐶)𝑦 → 𝑥 = 𝑦))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ≠ wne 2927 ∀wral 3046 ∅c0 4304 class class class wbr 5115 ‘cfv 6519 (class class class)co 7394 Basecbs 17185 lecple 17233 Hom chom 17237 ≃𝑐 ccic 17763 Proset cproset 18259 Posetcpo 18274 ProsetToCatcprstc 49427 |
| 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 2702 ax-rep 5242 ax-sep 5259 ax-nul 5269 ax-pow 5328 ax-pr 5395 ax-un 7718 ax-cnex 11142 ax-resscn 11143 ax-1cn 11144 ax-icn 11145 ax-addcl 11146 ax-addrcl 11147 ax-mulcl 11148 ax-mulrcl 11149 ax-mulcom 11150 ax-addass 11151 ax-mulass 11152 ax-distr 11153 ax-i2m1 11154 ax-1ne0 11155 ax-1rid 11156 ax-rnegex 11157 ax-rrecex 11158 ax-cnre 11159 ax-pre-lttri 11160 ax-pre-lttrn 11161 ax-pre-ltadd 11162 ax-pre-mulgt0 11163 |
| 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 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2880 df-ne 2928 df-nel 3032 df-ral 3047 df-rex 3056 df-rmo 3357 df-reu 3358 df-rab 3412 df-v 3457 df-sbc 3762 df-csb 3871 df-dif 3925 df-un 3927 df-in 3929 df-ss 3939 df-pss 3942 df-nul 4305 df-if 4497 df-pw 4573 df-sn 4598 df-pr 4600 df-op 4604 df-uni 4880 df-iun 4965 df-br 5116 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5541 df-eprel 5546 df-po 5554 df-so 5555 df-fr 5599 df-we 5601 df-xp 5652 df-rel 5653 df-cnv 5654 df-co 5655 df-dm 5656 df-rn 5657 df-res 5658 df-ima 5659 df-pred 6282 df-ord 6343 df-on 6344 df-lim 6345 df-suc 6346 df-iota 6472 df-fun 6521 df-fn 6522 df-f 6523 df-f1 6524 df-fo 6525 df-f1o 6526 df-fv 6527 df-riota 7351 df-ov 7397 df-oprab 7398 df-mpo 7399 df-om 7851 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8269 df-wrecs 8300 df-recs 8349 df-rdg 8387 df-1o 8443 df-er 8682 df-en 8923 df-dom 8924 df-sdom 8925 df-pnf 11228 df-mnf 11229 df-xr 11230 df-ltxr 11231 df-le 11232 df-sub 11425 df-neg 11426 df-nn 12198 df-2 12260 df-3 12261 df-4 12262 df-5 12263 df-6 12264 df-7 12265 df-8 12266 df-9 12267 df-n0 12459 df-z 12546 df-dec 12666 df-sets 17140 df-slot 17158 df-ndx 17170 df-base 17186 df-ple 17246 df-hom 17250 df-cco 17251 df-cat 17635 df-cid 17636 df-sect 17715 df-inv 17716 df-iso 17717 df-cic 17764 df-proset 18261 df-poset 18280 df-thinc 49296 df-prstc 49428 |
| This theorem is referenced by: (None) |
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