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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 50479. See prstchom2 50492 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 7447 | . . . 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 50488 | . . . . . . 7 ⊢ (𝜑 → ( ≤ × {1o}) = (Hom ‘𝐶)) |
| 7 | 2, 6 | eqtr4d 2798 | . . . . . 6 ⊢ (𝜑 → 𝐻 = ( ≤ × {1o})) |
| 8 | 1oex 8468 | . . . . . . 7 ⊢ 1o ∈ V | |
| 9 | 8 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ∈ V) |
| 10 | 1n0 8477 | . . . . . . 7 ⊢ 1o ≠ ∅ | |
| 11 | 10 | a1i 11 | . . . . . 6 ⊢ (𝜑 → 1o ≠ ∅) |
| 12 | 7, 9, 11 | fvconstr 49793 | . . . . 5 ⊢ (𝜑 → (𝑋 ≤ 𝑌 ↔ (𝑋𝐻𝑌) = 1o)) |
| 13 | 12 | biimpa 482 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) = 1o) |
| 14 | eqeng 8995 | . . . 4 ⊢ ((𝑋𝐻𝑌) ∈ V → ((𝑋𝐻𝑌) = 1o → (𝑋𝐻𝑌) ≈ 1o)) | |
| 15 | 1, 13, 14 | mpsyl 69 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → (𝑋𝐻𝑌) ≈ 1o) |
| 16 | euen1b 9037 | . . 3 ⊢ ((𝑋𝐻𝑌) ≈ 1o ↔ ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 17 | 15, 16 | sylib 221 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≤ 𝑌) → ∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌)) |
| 18 | euex 2602 | . . . 4 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 19 | n0 4300 | . . . 4 ⊢ ((𝑋𝐻𝑌) ≠ ∅ ↔ ∃𝑓 𝑓 ∈ (𝑋𝐻𝑌)) | |
| 20 | 18, 19 | sylibr 237 | . . 3 ⊢ (∃!𝑓 𝑓 ∈ (𝑋𝐻𝑌) → (𝑋𝐻𝑌) ≠ ∅) |
| 21 | 7, 9, 11 | fvconstrn0 49794 | . . . 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 2145 ∃!weu 2593 ≠ wne 2955 Vcvv 3450 ∅c0 4279 {csn 4584 class class class wbr 5103 × cxp 5653 ‘cfv 6533 (class class class)co 7414 1oc1o 8451 ≈ cen 8952 lecple 17352 Hom chom 17356 Proset cproset 18383 ProsetToCatcprstc 50478 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| 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 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7864 df-2nd 7988 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-1o 8458 df-er 8699 df-en 8956 df-dom 8957 df-sdom 8958 df-pnf 11272 df-mnf 11273 df-xr 11274 df-ltxr 11275 df-le 11276 df-sub 11470 df-neg 11471 df-nn 12261 df-2 12330 df-3 12331 df-4 12332 df-5 12333 df-6 12334 df-7 12335 df-8 12336 df-9 12337 df-n0 12532 df-z 12619 df-dec 12740 df-sets 17259 df-slot 17277 df-ndx 17289 df-base 17305 df-ple 17365 df-hom 17369 df-cco 17370 df-prstc 50479 |
| This theorem is used by: (None) |
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