| Mathbox for Zhi Wang |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > resipos | Structured version Visualization version GIF version | ||
| Description: A set equipped with an order where no distinct elements are comparable is a poset. (Contributed by Zhi Wang, 20-Oct-2025.) |
| Ref | Expression |
|---|---|
| resipos.k | ⊢ 𝐾 = {〈(Base‘ndx), 𝐵〉, 〈(le‘ndx), ( I ↾ 𝐵)〉} |
| Ref | Expression |
|---|---|
| resipos | ⊢ (𝐵 ∈ 𝑉 → 𝐾 ∈ Poset) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | resipos.k | . . . 4 ⊢ 𝐾 = {〈(Base‘ndx), 𝐵〉, 〈(le‘ndx), ( I ↾ 𝐵)〉} | |
| 2 | prex 5380 | . . . 4 ⊢ {〈(Base‘ndx), 𝐵〉, 〈(le‘ndx), ( I ↾ 𝐵)〉} ∈ V | |
| 3 | 1, 2 | eqeltri 2832 | . . 3 ⊢ 𝐾 ∈ V |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝐵 ∈ 𝑉 → 𝐾 ∈ V) |
| 5 | 1 | resiposbas 49449 | . 2 ⊢ (𝐵 ∈ 𝑉 → 𝐵 = (Base‘𝐾)) |
| 6 | resiexg 7863 | . . 3 ⊢ (𝐵 ∈ 𝑉 → ( I ↾ 𝐵) ∈ V) | |
| 7 | basendxltplendx 17332 | . . . 4 ⊢ (Base‘ndx) < (le‘ndx) | |
| 8 | plendxnn 17331 | . . . 4 ⊢ (le‘ndx) ∈ ℕ | |
| 9 | pleid 17330 | . . . 4 ⊢ le = Slot (le‘ndx) | |
| 10 | 1, 7, 8, 9 | 2strop 17199 | . . 3 ⊢ (( I ↾ 𝐵) ∈ V → ( I ↾ 𝐵) = (le‘𝐾)) |
| 11 | 6, 10 | syl 17 | . 2 ⊢ (𝐵 ∈ 𝑉 → ( I ↾ 𝐵) = (le‘𝐾)) |
| 12 | equid 2014 | . . . 4 ⊢ 𝑥 = 𝑥 | |
| 13 | resieq 5955 | . . . . 5 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑥 ↔ 𝑥 = 𝑥)) | |
| 14 | 13 | anidms 566 | . . . 4 ⊢ (𝑥 ∈ 𝐵 → (𝑥( I ↾ 𝐵)𝑥 ↔ 𝑥 = 𝑥)) |
| 15 | 12, 14 | mpbiri 258 | . . 3 ⊢ (𝑥 ∈ 𝐵 → 𝑥( I ↾ 𝐵)𝑥) |
| 16 | 15 | adantl 481 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝑥 ∈ 𝐵) → 𝑥( I ↾ 𝐵)𝑥) |
| 17 | resieq 5955 | . . . . 5 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑦 ↔ 𝑥 = 𝑦)) | |
| 18 | 17 | biimpd 229 | . . . 4 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑦 → 𝑥 = 𝑦)) |
| 19 | 18 | adantrd 491 | . . 3 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑥) → 𝑥 = 𝑦)) |
| 20 | 19 | 3adant1 1131 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑥) → 𝑥 = 𝑦)) |
| 21 | eqtr 2756 | . . . 4 ⊢ ((𝑥 = 𝑦 ∧ 𝑦 = 𝑧) → 𝑥 = 𝑧) | |
| 22 | 21 | a1i 11 | . . 3 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥 = 𝑦 ∧ 𝑦 = 𝑧) → 𝑥 = 𝑧)) |
| 23 | simpr1 1196 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑥 ∈ 𝐵) | |
| 24 | simpr2 1197 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑦 ∈ 𝐵) | |
| 25 | 23, 24, 17 | syl2anc 585 | . . . 4 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑥( I ↾ 𝐵)𝑦 ↔ 𝑥 = 𝑦)) |
| 26 | simpr3 1198 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑧 ∈ 𝐵) | |
| 27 | resieq 5955 | . . . . 5 ⊢ ((𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵) → (𝑦( I ↾ 𝐵)𝑧 ↔ 𝑦 = 𝑧)) | |
| 28 | 24, 26, 27 | syl2anc 585 | . . . 4 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑦( I ↾ 𝐵)𝑧 ↔ 𝑦 = 𝑧)) |
| 29 | 25, 28 | anbi12d 633 | . . 3 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑧) ↔ (𝑥 = 𝑦 ∧ 𝑦 = 𝑧))) |
| 30 | resieq 5955 | . . . 4 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑧 ↔ 𝑥 = 𝑧)) | |
| 31 | 23, 26, 30 | syl2anc 585 | . . 3 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑥( I ↾ 𝐵)𝑧 ↔ 𝑥 = 𝑧)) |
| 32 | 22, 29, 31 | 3imtr4d 294 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑧) → 𝑥( I ↾ 𝐵)𝑧)) |
| 33 | 4, 5, 11, 16, 20, 32 | isposd 18288 | 1 ⊢ (𝐵 ∈ 𝑉 → 𝐾 ∈ Poset) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 Vcvv 3429 {cpr 4569 〈cop 4573 class class class wbr 5085 I cid 5525 ↾ cres 5633 ‘cfv 6498 ndxcnx 17163 Basecbs 17179 lecple 17227 Posetcpo 18273 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-1st 7942 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-n0 12438 df-z 12525 df-dec 12645 df-uz 12789 df-fz 13462 df-struct 17117 df-slot 17152 df-ndx 17164 df-base 17180 df-ple 17240 df-poset 18279 |
| This theorem is referenced by: exbaspos 49451 exbasprs 49452 basresprsfo 49454 discbas 50047 discthin 50048 |
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