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| Mirrors > Home > MPE Home > Th. List > ipole | Structured version Visualization version GIF version | ||
| Description: Weak order condition of the inclusion poset. (Contributed by Stefan O'Rear, 30-Jan-2015.) |
| Ref | Expression |
|---|---|
| ipoval.i | ⊢ 𝐼 = (toInc‘𝐹) |
| ipole.l | ⊢ ≤ = (le‘𝐼) |
| Ref | Expression |
|---|---|
| ipole | ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋 ≤ 𝑌 ↔ 𝑋 ⊆ 𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | preq12 4693 | . . . . . 6 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → {𝑥, 𝑦} = {𝑋, 𝑌}) | |
| 2 | 1 | sseq1d 3966 | . . . . 5 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → ({𝑥, 𝑦} ⊆ 𝐹 ↔ {𝑋, 𝑌} ⊆ 𝐹)) |
| 3 | sseq12 3962 | . . . . 5 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (𝑥 ⊆ 𝑦 ↔ 𝑋 ⊆ 𝑌)) | |
| 4 | 2, 3 | anbi12d 633 | . . . 4 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦) ↔ ({𝑋, 𝑌} ⊆ 𝐹 ∧ 𝑋 ⊆ 𝑌))) |
| 5 | eqid 2737 | . . . 4 ⊢ {〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)} = {〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)} | |
| 6 | 4, 5 | brabga 5483 | . . 3 ⊢ ((𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋{〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)}𝑌 ↔ ({𝑋, 𝑌} ⊆ 𝐹 ∧ 𝑋 ⊆ 𝑌))) |
| 7 | 6 | 3adant1 1131 | . 2 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋{〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)}𝑌 ↔ ({𝑋, 𝑌} ⊆ 𝐹 ∧ 𝑋 ⊆ 𝑌))) |
| 8 | ipole.l | . . . . 5 ⊢ ≤ = (le‘𝐼) | |
| 9 | ipoval.i | . . . . . 6 ⊢ 𝐼 = (toInc‘𝐹) | |
| 10 | 9 | ipolerval 18460 | . . . . 5 ⊢ (𝐹 ∈ 𝑉 → {〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)} = (le‘𝐼)) |
| 11 | 8, 10 | eqtr4id 2791 | . . . 4 ⊢ (𝐹 ∈ 𝑉 → ≤ = {〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)}) |
| 12 | 11 | breqd 5110 | . . 3 ⊢ (𝐹 ∈ 𝑉 → (𝑋 ≤ 𝑌 ↔ 𝑋{〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)}𝑌)) |
| 13 | 12 | 3ad2ant1 1134 | . 2 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋 ≤ 𝑌 ↔ 𝑋{〈𝑥, 𝑦〉 ∣ ({𝑥, 𝑦} ⊆ 𝐹 ∧ 𝑥 ⊆ 𝑦)}𝑌)) |
| 14 | prssi 4778 | . . . 4 ⊢ ((𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → {𝑋, 𝑌} ⊆ 𝐹) | |
| 15 | 14 | 3adant1 1131 | . . 3 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → {𝑋, 𝑌} ⊆ 𝐹) |
| 16 | 15 | biantrurd 532 | . 2 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋 ⊆ 𝑌 ↔ ({𝑋, 𝑌} ⊆ 𝐹 ∧ 𝑋 ⊆ 𝑌))) |
| 17 | 7, 13, 16 | 3bitr4d 311 | 1 ⊢ ((𝐹 ∈ 𝑉 ∧ 𝑋 ∈ 𝐹 ∧ 𝑌 ∈ 𝐹) → (𝑋 ≤ 𝑌 ↔ 𝑋 ⊆ 𝑌)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ⊆ wss 3902 {cpr 4583 class class class wbr 5099 {copab 5161 ‘cfv 6493 lecple 17189 toInccipo 18455 |
| 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 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7683 ax-cnex 11087 ax-resscn 11088 ax-1cn 11089 ax-icn 11090 ax-addcl 11091 ax-addrcl 11092 ax-mulcl 11093 ax-mulrcl 11094 ax-mulcom 11095 ax-addass 11096 ax-mulass 11097 ax-distr 11098 ax-i2m1 11099 ax-1ne0 11100 ax-1rid 11101 ax-rnegex 11102 ax-rrecex 11103 ax-cnre 11104 ax-pre-lttri 11105 ax-pre-lttrn 11106 ax-pre-ltadd 11107 ax-pre-mulgt0 11108 |
| 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 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 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 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-1st 7936 df-2nd 7937 df-frecs 8226 df-wrecs 8257 df-recs 8306 df-rdg 8344 df-1o 8400 df-er 8638 df-en 8889 df-dom 8890 df-sdom 8891 df-fin 8892 df-pnf 11173 df-mnf 11174 df-xr 11175 df-ltxr 11176 df-le 11177 df-sub 11371 df-neg 11372 df-nn 12151 df-2 12213 df-3 12214 df-4 12215 df-5 12216 df-6 12217 df-7 12218 df-8 12219 df-9 12220 df-n0 12407 df-z 12494 df-dec 12613 df-uz 12757 df-fz 13429 df-struct 17079 df-slot 17114 df-ndx 17126 df-base 17142 df-tset 17201 df-ple 17202 df-ocomp 17203 df-ipo 18456 |
| This theorem is referenced by: ipolt 18463 ipopos 18464 isipodrs 18465 ipodrsfi 18467 mrelatglb 18488 mrelatglb0 18489 mrelatlub 18490 thlleval 21658 pwrssmgc 33085 nsgmgc 33497 ipolublem 49308 ipoglblem 49311 |
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