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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 49141 | . . 3 ⊢ (𝜑 → 𝐶 ∈ Proset ) |
| 4 | postc.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐶) | |
| 5 | eqid 2734 | . . . . 5 ⊢ (le‘𝐶) = (le‘𝐶) | |
| 6 | 4, 5 | ispos2 18330 | . . . 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 49142 | . . . . . 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 2734 | . . . . . 6 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 15 | 11, 4, 12, 13, 14 | thinccic 49072 | . . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥( ≃𝑐 ‘𝐶)𝑦 ↔ ((𝑥(Hom ‘𝐶)𝑦) ≠ ∅ ∧ (𝑦(Hom ‘𝐶)𝑥) ≠ ∅))) |
| 16 | eqidd 2735 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (le‘𝐶) = (le‘𝐶)) | |
| 17 | eqidd 2735 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (Hom ‘𝐶) = (Hom ‘𝐶)) | |
| 18 | 12, 4 | eleqtrdi 2843 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑥 ∈ (Base‘𝐶)) |
| 19 | 13, 4 | eleqtrdi 2843 | . . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ (Base‘𝐶)) |
| 20 | 9, 10, 16, 17, 18, 19 | prstchom 49143 | . . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(le‘𝐶)𝑦 ↔ (𝑥(Hom ‘𝐶)𝑦) ≠ ∅)) |
| 21 | 9, 10, 16, 17, 19, 18 | prstchom 49143 | . . . . . 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 3206 | . 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 1539 ∈ wcel 2107 ≠ wne 2931 ∀wral 3050 ∅c0 4313 class class class wbr 5123 ‘cfv 6540 (class class class)co 7412 Basecbs 17228 lecple 17279 Hom chom 17283 ≃𝑐 ccic 17809 Proset cproset 18307 Posetcpo 18322 ProsetToCatcprstc 49128 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-rep 5259 ax-sep 5276 ax-nul 5286 ax-pow 5345 ax-pr 5412 ax-un 7736 ax-cnex 11192 ax-resscn 11193 ax-1cn 11194 ax-icn 11195 ax-addcl 11196 ax-addrcl 11197 ax-mulcl 11198 ax-mulrcl 11199 ax-mulcom 11200 ax-addass 11201 ax-mulass 11202 ax-distr 11203 ax-i2m1 11204 ax-1ne0 11205 ax-1rid 11206 ax-rnegex 11207 ax-rrecex 11208 ax-cnre 11209 ax-pre-lttri 11210 ax-pre-lttrn 11211 ax-pre-ltadd 11212 ax-pre-mulgt0 11213 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-nel 3036 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3420 df-v 3465 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4888 df-iun 4973 df-br 5124 df-opab 5186 df-mpt 5206 df-tr 5240 df-id 5558 df-eprel 5564 df-po 5572 df-so 5573 df-fr 5617 df-we 5619 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6301 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6493 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7869 df-1st 7995 df-2nd 7996 df-supp 8167 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-1o 8487 df-er 8726 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11278 df-mnf 11279 df-xr 11280 df-ltxr 11281 df-le 11282 df-sub 11475 df-neg 11476 df-nn 12248 df-2 12310 df-3 12311 df-4 12312 df-5 12313 df-6 12314 df-7 12315 df-8 12316 df-9 12317 df-n0 12509 df-z 12596 df-dec 12716 df-sets 17182 df-slot 17200 df-ndx 17212 df-base 17229 df-ple 17292 df-hom 17296 df-cco 17297 df-cat 17681 df-cid 17682 df-sect 17761 df-inv 17762 df-iso 17763 df-cic 17810 df-proset 18309 df-poset 18328 df-thinc 49021 df-prstc 49129 |
| This theorem is referenced by: (None) |
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