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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 5374 | . . . 4 ⊢ {〈(Base‘ndx), 𝐵〉, 〈(le‘ndx), ( I ↾ 𝐵)〉} ∈ V | |
| 3 | 1, 2 | eqeltri 2836 | . . 3 ⊢ 𝐾 ∈ V |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝐵 ∈ 𝑉 → 𝐾 ∈ V) |
| 5 | 1 | resiposbas 49471 | . 2 ⊢ (𝐵 ∈ 𝑉 → 𝐵 = (Base‘𝐾)) |
| 6 | resiexg 7859 | . . 3 ⊢ (𝐵 ∈ 𝑉 → ( I ↾ 𝐵) ∈ V) | |
| 7 | basendxltplendx 17330 | . . . 4 ⊢ (Base‘ndx) < (le‘ndx) | |
| 8 | plendxnn 17329 | . . . 4 ⊢ (le‘ndx) ∈ ℕ | |
| 9 | pleid 17328 | . . . 4 ⊢ le = Slot (le‘ndx) | |
| 10 | 1, 7, 8, 9 | 2strop 17197 | . . 3 ⊢ (( I ↾ 𝐵) ∈ V → ( I ↾ 𝐵) = (le‘𝐾)) |
| 11 | 6, 10 | syl 17 | . 2 ⊢ (𝐵 ∈ 𝑉 → ( I ↾ 𝐵) = (le‘𝐾)) |
| 12 | equid 2019 | . . . 4 ⊢ 𝑥 = 𝑥 | |
| 13 | resieq 5949 | . . . . 5 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑥 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑥 ↔ 𝑥 = 𝑥)) | |
| 14 | 13 | anidms 571 | . . . 4 ⊢ (𝑥 ∈ 𝐵 → (𝑥( I ↾ 𝐵)𝑥 ↔ 𝑥 = 𝑥)) |
| 15 | 12, 14 | mpbiri 259 | . . 3 ⊢ (𝑥 ∈ 𝐵 → 𝑥( I ↾ 𝐵)𝑥) |
| 16 | 15 | adantl 482 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝑥 ∈ 𝐵) → 𝑥( I ↾ 𝐵)𝑥) |
| 17 | resieq 5949 | . . . . 5 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑦 ↔ 𝑥 = 𝑦)) | |
| 18 | 17 | biimpd 230 | . . . 4 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑦 → 𝑥 = 𝑦)) |
| 19 | 18 | adantrd 492 | . . 3 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑥) → 𝑥 = 𝑦)) |
| 20 | 19 | 3adant1 1136 | . 2 ⊢ ((𝐵 ∈ 𝑉 ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑥) → 𝑥 = 𝑦)) |
| 21 | eqtr 2760 | . . . 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 1201 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑥 ∈ 𝐵) | |
| 24 | simpr2 1202 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑦 ∈ 𝐵) | |
| 25 | 23, 24, 17 | syl2anc 590 | . . . 4 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑥( I ↾ 𝐵)𝑦 ↔ 𝑥 = 𝑦)) |
| 26 | simpr3 1203 | . . . . 5 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → 𝑧 ∈ 𝐵) | |
| 27 | resieq 5949 | . . . . 5 ⊢ ((𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵) → (𝑦( I ↾ 𝐵)𝑧 ↔ 𝑦 = 𝑧)) | |
| 28 | 24, 26, 27 | syl2anc 590 | . . . 4 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑦( I ↾ 𝐵)𝑧 ↔ 𝑦 = 𝑧)) |
| 29 | 25, 28 | anbi12d 638 | . . 3 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → ((𝑥( I ↾ 𝐵)𝑦 ∧ 𝑦( I ↾ 𝐵)𝑧) ↔ (𝑥 = 𝑦 ∧ 𝑦 = 𝑧))) |
| 30 | resieq 5949 | . . . 4 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵) → (𝑥( I ↾ 𝐵)𝑧 ↔ 𝑥 = 𝑧)) | |
| 31 | 23, 26, 30 | syl2anc 590 | . . 3 ⊢ ((𝐵 ∈ 𝑉 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵 ∧ 𝑧 ∈ 𝐵)) → (𝑥( I ↾ 𝐵)𝑧 ↔ 𝑥 = 𝑧)) |
| 32 | 22, 29, 31 | 3imtr4d 295 | . 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 18286 | 1 ⊢ (𝐵 ∈ 𝑉 → 𝐾 ∈ Poset) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 ∧ wa 396 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 Vcvv 3432 {cpr 4564 〈cop 4568 class class class wbr 5079 I cid 5519 ↾ cres 5627 ‘cfv 6492 ndxcnx 17161 Basecbs 17177 lecple 17225 Posetcpo 18271 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-cnex 11092 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-addrcl 11097 ax-mulcl 11098 ax-mulrcl 11099 ax-mulcom 11100 ax-addass 11101 ax-mulass 11102 ax-distr 11103 ax-i2m1 11104 ax-1ne0 11105 ax-1rid 11106 ax-rnegex 11107 ax-rrecex 11108 ax-cnre 11109 ax-pre-lttri 11110 ax-pre-lttrn 11111 ax-pre-ltadd 11112 ax-pre-mulgt0 11113 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-nel 3040 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7320 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-1st 7938 df-2nd 7939 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-1o 8402 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-fin 8894 df-pnf 11179 df-mnf 11180 df-xr 11181 df-ltxr 11182 df-le 11183 df-sub 11377 df-neg 11378 df-nn 12173 df-2 12242 df-3 12243 df-4 12244 df-5 12245 df-6 12246 df-7 12247 df-8 12248 df-9 12249 df-n0 12436 df-z 12523 df-dec 12643 df-uz 12787 df-fz 13460 df-struct 17115 df-slot 17150 df-ndx 17162 df-base 17178 df-ple 17238 df-poset 18277 |
| This theorem is referenced by: exbaspos 49473 exbasprs 49474 basresprsfo 49476 discbas 50069 discthin 50070 |
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