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Theorem ordtopn2 21221
Description: A downward ray (-∞, 𝑃) is open. (Contributed by Mario Carneiro, 3-Sep-2015.)
Hypothesis
Ref Expression
ordttopon.3 𝑋 = dom 𝑅
Assertion
Ref Expression
ordtopn2 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ (ordTop‘𝑅))
Distinct variable groups:   𝑥,𝑃   𝑥,𝑅   𝑥,𝑉   𝑥,𝑋

Proof of Theorem ordtopn2
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 ordttopon.3 . . . . . . . . 9 𝑋 = dom 𝑅
2 eqid 2760 . . . . . . . . 9 ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) = ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦})
3 eqid 2760 . . . . . . . . 9 ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}) = ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})
41, 2, 3ordtuni 21216 . . . . . . . 8 (𝑅𝑉𝑋 = ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))
54adantr 472 . . . . . . 7 ((𝑅𝑉𝑃𝑋) → 𝑋 = ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))
6 dmexg 7263 . . . . . . . . 9 (𝑅𝑉 → dom 𝑅 ∈ V)
71, 6syl5eqel 2843 . . . . . . . 8 (𝑅𝑉𝑋 ∈ V)
87adantr 472 . . . . . . 7 ((𝑅𝑉𝑃𝑋) → 𝑋 ∈ V)
95, 8eqeltrrd 2840 . . . . . 6 ((𝑅𝑉𝑃𝑋) → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ∈ V)
10 uniexb 7139 . . . . . 6 (({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ∈ V ↔ ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ∈ V)
119, 10sylibr 224 . . . . 5 ((𝑅𝑉𝑃𝑋) → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ∈ V)
12 ssfii 8492 . . . . 5 (({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ∈ V → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ⊆ (fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))))
1311, 12syl 17 . . . 4 ((𝑅𝑉𝑃𝑋) → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ⊆ (fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))))
14 fibas 21003 . . . . 5 (fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))) ∈ TopBases
15 bastg 20992 . . . . 5 ((fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))) ∈ TopBases → (fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))) ⊆ (topGen‘(fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))))
1614, 15ax-mp 5 . . . 4 (fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))) ⊆ (topGen‘(fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))))
1713, 16syl6ss 3756 . . 3 ((𝑅𝑉𝑃𝑋) → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ⊆ (topGen‘(fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))))
181, 2, 3ordtval 21215 . . . 4 (𝑅𝑉 → (ordTop‘𝑅) = (topGen‘(fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))))
1918adantr 472 . . 3 ((𝑅𝑉𝑃𝑋) → (ordTop‘𝑅) = (topGen‘(fi‘({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))))
2017, 19sseqtr4d 3783 . 2 ((𝑅𝑉𝑃𝑋) → ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))) ⊆ (ordTop‘𝑅))
21 ssun2 3920 . . 3 (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})) ⊆ ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))
22 ssun2 3920 . . . 4 ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}) ⊆ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))
23 simpr 479 . . . . . 6 ((𝑅𝑉𝑃𝑋) → 𝑃𝑋)
24 eqidd 2761 . . . . . 6 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥})
25 breq1 4807 . . . . . . . . . 10 (𝑦 = 𝑃 → (𝑦𝑅𝑥𝑃𝑅𝑥))
2625notbid 307 . . . . . . . . 9 (𝑦 = 𝑃 → (¬ 𝑦𝑅𝑥 ↔ ¬ 𝑃𝑅𝑥))
2726rabbidv 3329 . . . . . . . 8 (𝑦 = 𝑃 → {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥})
2827eqeq2d 2770 . . . . . . 7 (𝑦 = 𝑃 → ({𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥} ↔ {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥}))
2928rspcev 3449 . . . . . 6 ((𝑃𝑋 ∧ {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥}) → ∃𝑦𝑋 {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})
3023, 24, 29syl2anc 696 . . . . 5 ((𝑅𝑉𝑃𝑋) → ∃𝑦𝑋 {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})
31 rabexg 4963 . . . . . 6 (𝑋 ∈ V → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ V)
32 eqid 2760 . . . . . . 7 (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}) = (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})
3332elrnmpt 5527 . . . . . 6 ({𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ V → ({𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}) ↔ ∃𝑦𝑋 {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))
348, 31, 333syl 18 . . . . 5 ((𝑅𝑉𝑃𝑋) → ({𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}) ↔ ∃𝑦𝑋 {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} = {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))
3530, 34mpbird 247 . . . 4 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))
3622, 35sseldi 3742 . . 3 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥})))
3721, 36sseldi 3742 . 2 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ ({𝑋} ∪ (ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑥𝑅𝑦}) ∪ ran (𝑦𝑋 ↦ {𝑥𝑋 ∣ ¬ 𝑦𝑅𝑥}))))
3820, 37sseldd 3745 1 ((𝑅𝑉𝑃𝑋) → {𝑥𝑋 ∣ ¬ 𝑃𝑅𝑥} ∈ (ordTop‘𝑅))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383   = wceq 1632  wcel 2139  wrex 3051  {crab 3054  Vcvv 3340  cun 3713  wss 3715  {csn 4321   cuni 4588   class class class wbr 4804  cmpt 4881  dom cdm 5266  ran crn 5267  cfv 6049  ficfi 8483  topGenctg 16320  ordTopcordt 16381  TopBasesctb 20971
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7115
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-reu 3057  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-int 4628  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-pred 5841  df-ord 5887  df-on 5888  df-lim 5889  df-suc 5890  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-ov 6817  df-oprab 6818  df-mpt2 6819  df-om 7232  df-wrecs 7577  df-recs 7638  df-rdg 7676  df-1o 7730  df-oadd 7734  df-er 7913  df-en 8124  df-fin 8127  df-fi 8484  df-topgen 16326  df-ordt 16383  df-bases 20972
This theorem is referenced by:  ordtopn3  21222  ordtcld2  21224  ordtrest  21228  ordthauslem  21409  ordthmeolem  21826  ordtrestNEW  30297
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