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Theorem pslem 17414
Description: Lemma for psref 17416 and others. (Contributed by NM, 12-May-2008.) (Revised by Mario Carneiro, 30-Apr-2015.)
Assertion
Ref Expression
pslem (𝑅 ∈ PosetRel → (((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶) ∧ (𝐴 𝑅𝐴𝑅𝐴) ∧ ((𝐴𝑅𝐵𝐵𝑅𝐴) → 𝐴 = 𝐵)))

Proof of Theorem pslem
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 psrel 17411 . . . . . 6 (𝑅 ∈ PosetRel → Rel 𝑅)
2 brrelex12 5294 . . . . . 6 ((Rel 𝑅𝐴𝑅𝐵) → (𝐴 ∈ V ∧ 𝐵 ∈ V))
31, 2sylan 569 . . . . 5 ((𝑅 ∈ PosetRel ∧ 𝐴𝑅𝐵) → (𝐴 ∈ V ∧ 𝐵 ∈ V))
4 brrelex2 5296 . . . . . 6 ((Rel 𝑅𝐵𝑅𝐶) → 𝐶 ∈ V)
51, 4sylan 569 . . . . 5 ((𝑅 ∈ PosetRel ∧ 𝐵𝑅𝐶) → 𝐶 ∈ V)
63, 5anim12dan 605 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐶)) → ((𝐴 ∈ V ∧ 𝐵 ∈ V) ∧ 𝐶 ∈ V))
7 pstr2 17413 . . . . . 6 (𝑅 ∈ PosetRel → (𝑅𝑅) ⊆ 𝑅)
8 cotr 5648 . . . . . 6 ((𝑅𝑅) ⊆ 𝑅 ↔ ∀𝑥𝑦𝑧((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧))
97, 8sylib 208 . . . . 5 (𝑅 ∈ PosetRel → ∀𝑥𝑦𝑧((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧))
109adantr 466 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐶)) → ∀𝑥𝑦𝑧((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧))
11 simpr 471 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐶)) → (𝐴𝑅𝐵𝐵𝑅𝐶))
12 breq12 4792 . . . . . . . . 9 ((𝑥 = 𝐴𝑦 = 𝐵) → (𝑥𝑅𝑦𝐴𝑅𝐵))
13123adant3 1126 . . . . . . . 8 ((𝑥 = 𝐴𝑦 = 𝐵𝑧 = 𝐶) → (𝑥𝑅𝑦𝐴𝑅𝐵))
14 breq12 4792 . . . . . . . . 9 ((𝑦 = 𝐵𝑧 = 𝐶) → (𝑦𝑅𝑧𝐵𝑅𝐶))
15143adant1 1124 . . . . . . . 8 ((𝑥 = 𝐴𝑦 = 𝐵𝑧 = 𝐶) → (𝑦𝑅𝑧𝐵𝑅𝐶))
1613, 15anbi12d 616 . . . . . . 7 ((𝑥 = 𝐴𝑦 = 𝐵𝑧 = 𝐶) → ((𝑥𝑅𝑦𝑦𝑅𝑧) ↔ (𝐴𝑅𝐵𝐵𝑅𝐶)))
17 breq12 4792 . . . . . . . 8 ((𝑥 = 𝐴𝑧 = 𝐶) → (𝑥𝑅𝑧𝐴𝑅𝐶))
18173adant2 1125 . . . . . . 7 ((𝑥 = 𝐴𝑦 = 𝐵𝑧 = 𝐶) → (𝑥𝑅𝑧𝐴𝑅𝐶))
1916, 18imbi12d 333 . . . . . 6 ((𝑥 = 𝐴𝑦 = 𝐵𝑧 = 𝐶) → (((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧) ↔ ((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
2019spc3gv 3449 . . . . 5 ((𝐴 ∈ V ∧ 𝐵 ∈ V ∧ 𝐶 ∈ V) → (∀𝑥𝑦𝑧((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧) → ((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
21203expa 1111 . . . 4 (((𝐴 ∈ V ∧ 𝐵 ∈ V) ∧ 𝐶 ∈ V) → (∀𝑥𝑦𝑧((𝑥𝑅𝑦𝑦𝑅𝑧) → 𝑥𝑅𝑧) → ((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶)))
226, 10, 11, 21syl3c 66 . . 3 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐶)) → 𝐴𝑅𝐶)
2322ex 397 . 2 (𝑅 ∈ PosetRel → ((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶))
24 psref2 17412 . . 3 (𝑅 ∈ PosetRel → (𝑅𝑅) = ( I ↾ 𝑅))
25 asymref2 5653 . . . 4 ((𝑅𝑅) = ( I ↾ 𝑅) ↔ (∀𝑥 𝑅𝑥𝑅𝑥 ∧ ∀𝑥𝑦((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦)))
2625simplbi 485 . . 3 ((𝑅𝑅) = ( I ↾ 𝑅) → ∀𝑥 𝑅𝑥𝑅𝑥)
27 breq12 4792 . . . . 5 ((𝑥 = 𝐴𝑥 = 𝐴) → (𝑥𝑅𝑥𝐴𝑅𝐴))
2827anidms 556 . . . 4 (𝑥 = 𝐴 → (𝑥𝑅𝑥𝐴𝑅𝐴))
2928rspccv 3457 . . 3 (∀𝑥 𝑅𝑥𝑅𝑥 → (𝐴 𝑅𝐴𝑅𝐴))
3024, 26, 293syl 18 . 2 (𝑅 ∈ PosetRel → (𝐴 𝑅𝐴𝑅𝐴))
313adantrr 696 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐴)) → (𝐴 ∈ V ∧ 𝐵 ∈ V))
3225simprbi 484 . . . . . 6 ((𝑅𝑅) = ( I ↾ 𝑅) → ∀𝑥𝑦((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦))
3324, 32syl 17 . . . . 5 (𝑅 ∈ PosetRel → ∀𝑥𝑦((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦))
3433adantr 466 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐴)) → ∀𝑥𝑦((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦))
35 simpr 471 . . . 4 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐴)) → (𝐴𝑅𝐵𝐵𝑅𝐴))
36 breq12 4792 . . . . . . . 8 ((𝑦 = 𝐵𝑥 = 𝐴) → (𝑦𝑅𝑥𝐵𝑅𝐴))
3736ancoms 446 . . . . . . 7 ((𝑥 = 𝐴𝑦 = 𝐵) → (𝑦𝑅𝑥𝐵𝑅𝐴))
3812, 37anbi12d 616 . . . . . 6 ((𝑥 = 𝐴𝑦 = 𝐵) → ((𝑥𝑅𝑦𝑦𝑅𝑥) ↔ (𝐴𝑅𝐵𝐵𝑅𝐴)))
39 eqeq12 2784 . . . . . 6 ((𝑥 = 𝐴𝑦 = 𝐵) → (𝑥 = 𝑦𝐴 = 𝐵))
4038, 39imbi12d 333 . . . . 5 ((𝑥 = 𝐴𝑦 = 𝐵) → (((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦) ↔ ((𝐴𝑅𝐵𝐵𝑅𝐴) → 𝐴 = 𝐵)))
4140spc2gv 3447 . . . 4 ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (∀𝑥𝑦((𝑥𝑅𝑦𝑦𝑅𝑥) → 𝑥 = 𝑦) → ((𝐴𝑅𝐵𝐵𝑅𝐴) → 𝐴 = 𝐵)))
4231, 34, 35, 41syl3c 66 . . 3 ((𝑅 ∈ PosetRel ∧ (𝐴𝑅𝐵𝐵𝑅𝐴)) → 𝐴 = 𝐵)
4342ex 397 . 2 (𝑅 ∈ PosetRel → ((𝐴𝑅𝐵𝐵𝑅𝐴) → 𝐴 = 𝐵))
4423, 30, 433jca 1122 1 (𝑅 ∈ PosetRel → (((𝐴𝑅𝐵𝐵𝑅𝐶) → 𝐴𝑅𝐶) ∧ (𝐴 𝑅𝐴𝑅𝐴) ∧ ((𝐴𝑅𝐵𝐵𝑅𝐴) → 𝐴 = 𝐵)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 382  w3a 1071  wal 1629   = wceq 1631  wcel 2145  wral 3061  Vcvv 3351  cin 3722  wss 3723   cuni 4575   class class class wbr 4787   I cid 5157  ccnv 5249  cres 5252  ccom 5254  Rel wrel 5255  PosetRelcps 17406
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-sep 4916  ax-nul 4924  ax-pr 5035
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 837  df-3an 1073  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-mo 2623  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ral 3066  df-rex 3067  df-rab 3070  df-v 3353  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-nul 4064  df-if 4227  df-sn 4318  df-pr 4320  df-op 4324  df-uni 4576  df-br 4788  df-opab 4848  df-id 5158  df-xp 5256  df-rel 5257  df-cnv 5258  df-co 5259  df-res 5262  df-ps 17408
This theorem is referenced by:  psdmrn  17415  psref  17416  psasym  17418  pstr  17419
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