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| Mirrors > Home > MPE Home > Th. List > Mathboxes > prstchom2ALT | Structured version Visualization version GIF version | ||
| Description: Hom-sets of the constructed category are dependent on the preorder. This proof depends on the definition df-prstc 49909. See prstchom2 49922 for a version that does not depend on the definition. (Contributed by Zhi Wang, 20-Sep-2024.) (Proof modification is discouraged.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| prstcnid.c | ⊢ (𝜑 → 𝐶 = (ProsetToCat‘𝐾)) |
| prstcnid.k | ⊢ (𝜑 → 𝐾 ∈ Proset ) |
| prstchom.l | ⊢ (𝜑 → ≤ = (le‘𝐶)) |
| prstchom.e | ⊢ (𝜑 → 𝐻 = (Hom ‘𝐶)) |
| Ref | Expression |
|---|---|
| prstchom2ALT | ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovex 7401 | . . . 4 ⊢ (𝑋𝐻𝑌) ∈ V | |
| 2 | prstchom.e | . . . . . . 7 ⊢ (𝜑 → 𝐻 = (Hom ‘𝐶)) | |
| 3 | prstcnid.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 = (ProsetToCat‘𝐾)) | |
| 4 | prstcnid.k | . . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ Proset ) | |
| 5 | prstchom.l | . . . . . . . 8 ⊢ (𝜑 → ≤ = (le‘𝐶)) | |
| 6 | 3, 4, 5 | prstchomval 49918 | . . . . . . 7 ⊢ (𝜑 → ( ≤ × {1o}) = (Hom ‘𝐶)) |
| 7 | 2, 6 | eqtr4d 2775 | . . . . . 6 ⊢ (𝜑 → 𝐻 = ( ≤ × {1o})) |
| 8 | 1oex 8417 | . . . . . . 7 ⊢ 1o ∈ V | |
| 9 | 8 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ∈ V) |
| 10 | 1n0 8425 | . . . . . . 7 ⊢ 1o ≠ ∅ | |
| 11 | 10 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ≠ ∅) |
| 12 | 7, 9, 11 | fvconstr 49221 | . . . . 5 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ (𝑋𝐻𝑌) = 1o)) |
| 13 | 12 | biimpa 476 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) = 1o) |
| 14 | eqeng 8935 | . . . 4 ⊢ ((𝑋𝐻𝑌) ∈ V → ((𝑋𝐻𝑌) = 1o → (𝑋𝐻𝑌) ≈ 1o)) | |
| 15 | 1, 13, 14 | mpsyl 68 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) ≈ 1o) |
| 16 | euen1b 8977 | . . 3 ⊢ ((𝑋𝐻𝑌) ≈ 1o ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 17 | 15, 16 | sylib 218 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) |
| 18 | euex 2578 | . . . 4 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 19 | n0 4307 | . . . 4 ⊢ ((𝑋𝐻𝑌) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 20 | 18, 19 | sylibr 234 | . . 3 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → (𝑋𝐻𝑌) ≠ ∅) |
| 21 | 7, 9, 11 | fvconstrn0 49222 | . . . 4 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ (𝑋𝐻𝑌) ≠ ∅)) |
| 22 | 21 | biimpar 477 | . . 3 ⊢ ((𝜑 ∧ (𝑋𝐻𝑌) ≠ ∅) → 𝑋 ≤ 𝑌) |
| 23 | 20, 22 | sylan2 594 | . 2 ⊢ ((𝜑 ∧ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑋 ≤ 𝑌) |
| 24 | 17, 23 | impbida 801 | 1 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∃wex 1781 ∈ wcel 2114 ∃!weu 2569 ≠ wne 2933 Vcvv 3442 ∅c0 4287 {csn 4582 class class class wbr 5100 × cxp 5630 ‘cfv 6500 (class class class)co 7368 1oc1o 8400 ≈ cen 8892 lecple 17196 Hom chom 17200 Proset cproset 18227 ProsetToCatcprstc 49908 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-2nd 7944 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-dec 12620 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-ple 17209 df-hom 17213 df-cco 17214 df-prstc 49909 |
| This theorem is referenced by: (None) |
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