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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 51019. See prstchom2 51032 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 7484 | . . . 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 51028 | . . . . . . 7 ⊢ (𝜑 → ( ≤ × {1o}) = (Hom ‘𝐶)) |
| 7 | 2, 6 | eqtr4d 2801 | . . . . . 6 ⊢ (𝜑 → 𝐻 = ( ≤ × {1o})) |
| 8 | 1oex 8524 | . . . . . . 7 ⊢ 1o ∈ V | |
| 9 | 8 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ∈ V) |
| 10 | 1n0 8533 | . . . . . . 7 ⊢ 1o ≠ ∅ | |
| 11 | 10 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ≠ ∅) |
| 12 | 7, 9, 11 | ovconstbrd 50304 | . . . . 5 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ (𝑋𝐻𝑌) = 1o)) |
| 13 | 12 | biimpa 482 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) = 1o) |
| 14 | eqeng 9051 | . . . 4 ⊢ ((𝑋𝐻𝑌) ∈ V → ((𝑋𝐻𝑌) = 1o → (𝑋𝐻𝑌) ≈ 1o)) | |
| 15 | 1, 13, 14 | mpsyl 69 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) ≈ 1o) |
| 16 | euen1b 9093 | . . 3 ⊢ ((𝑋𝐻𝑌) ≈ 1o ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 17 | 15, 16 | sylib 221 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) |
| 18 | euex 2605 | . . . 4 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 19 | n0 4303 | . . . 4 ⊢ ((𝑋𝐻𝑌) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 20 | 18, 19 | sylibr 237 | . . 3 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → (𝑋𝐻𝑌) ≠ ∅) |
| 21 | 7, 9, 11 | ovconstbrn0d 50305 | . . . 4 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ (𝑋𝐻𝑌) ≠ ∅)) |
| 22 | 21 | biimpar 483 | . . 3 ⊢ ((𝜑 ∧ (𝑋𝐻𝑌) ≠ ∅) → 𝑋 ≤ 𝑌) |
| 23 | 20, 22 | sylan2 605 | . 2 ⊢ ((𝜑 ∧ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) → 𝑋 ≤ 𝑌) |
| 24 | 17, 23 | impbida 813 | 1 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∃wex 1812 ∈ wcel 2147 ∃!weu 2596 ≠ wne 2959 Vcvv 3454 ∅c0 4281 {csn 4588 class class class wbr 5108 × cxp 5656 ‘cfv 6566 (class class class)co 7451 1oc1o 8507 ≈ cen 9008 lecple 17479 Hom chom 17483 Proset cproset 18516 ProsetToCatcprstc 51018 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-sets 17386 df-slot 17404 df-ndx 17416 df-base 17432 df-ple 17493 df-hom 17497 df-cco 17498 df-prstc 51019 |
| This theorem is used by: (None) |
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