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Theorem ltexprlem7 9552
Description: Lemma for Proposition 9-3.5(iv) of [Gleason] p. 123. (Contributed by NM, 8-Apr-1996.) (Revised by Mario Carneiro, 12-Jun-2013.) (New usage is discouraged.)
Hypothesis
Ref Expression
ltexprlem.1 𝐶 = {𝑥 ∣ ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵)}
Assertion
Ref Expression
ltexprlem7 (((𝐴P𝐵P) ∧ 𝐴𝐵) → 𝐵 ⊆ (𝐴 +P 𝐶))
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵,𝑦   𝑥,𝐶
Allowed substitution hint:   𝐶(𝑦)

Proof of Theorem ltexprlem7
Dummy variables 𝑧 𝑤 𝑣 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ltexprlem.1 . . . . . . . 8 𝐶 = {𝑥 ∣ ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵)}
21ltexprlem5 9550 . . . . . . 7 ((𝐵P𝐴𝐵) → 𝐶P)
3 ltaddpr 9544 . . . . . . . . . . . . . 14 ((𝐴P𝐶P) → 𝐴<P (𝐴 +P 𝐶))
4 addclpr 9528 . . . . . . . . . . . . . . 15 ((𝐴P𝐶P) → (𝐴 +P 𝐶) ∈ P)
5 ltprord 9540 . . . . . . . . . . . . . . 15 ((𝐴P ∧ (𝐴 +P 𝐶) ∈ P) → (𝐴<P (𝐴 +P 𝐶) ↔ 𝐴 ⊊ (𝐴 +P 𝐶)))
64, 5syldan 480 . . . . . . . . . . . . . 14 ((𝐴P𝐶P) → (𝐴<P (𝐴 +P 𝐶) ↔ 𝐴 ⊊ (𝐴 +P 𝐶)))
73, 6mpbid 217 . . . . . . . . . . . . 13 ((𝐴P𝐶P) → 𝐴 ⊊ (𝐴 +P 𝐶))
87pssssd 3552 . . . . . . . . . . . 12 ((𝐴P𝐶P) → 𝐴 ⊆ (𝐴 +P 𝐶))
98sseld 3453 . . . . . . . . . . 11 ((𝐴P𝐶P) → (𝑤𝐴𝑤 ∈ (𝐴 +P 𝐶)))
1092a1d 26 . . . . . . . . . 10 ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵 → (𝑤𝐴𝑤 ∈ (𝐴 +P 𝐶)))))
1110com4r 90 . . . . . . . . 9 (𝑤𝐴 → ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
1211expd 445 . . . . . . . 8 (𝑤𝐴 → (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
13 prnmadd 9507 . . . . . . . . . . . 12 ((𝐵P𝑤𝐵) → ∃𝑣(𝑤 +Q 𝑣) ∈ 𝐵)
1413ex 443 . . . . . . . . . . 11 (𝐵P → (𝑤𝐵 → ∃𝑣(𝑤 +Q 𝑣) ∈ 𝐵))
15 elprnq 9501 . . . . . . . . . . . . . . . 16 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑤 +Q 𝑣) ∈ Q)
16 addnqf 9458 . . . . . . . . . . . . . . . . . 18 +Q :(Q × Q)⟶Q
1716fdmi 5791 . . . . . . . . . . . . . . . . 17 dom +Q = (Q × Q)
18 0nnq 9434 . . . . . . . . . . . . . . . . 17 ¬ ∅ ∈ Q
1917, 18ndmovrcl 6530 . . . . . . . . . . . . . . . 16 ((𝑤 +Q 𝑣) ∈ Q → (𝑤Q𝑣Q))
2015, 19syl 17 . . . . . . . . . . . . . . 15 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑤Q𝑣Q))
2120simpld 468 . . . . . . . . . . . . . 14 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → 𝑤Q)
22 vex 3069 . . . . . . . . . . . . . . . . . . 19 𝑣 ∈ V
2322prlem934 9543 . . . . . . . . . . . . . . . . . 18 (𝐴P → ∃𝑧𝐴 ¬ (𝑧 +Q 𝑣) ∈ 𝐴)
2423adantr 474 . . . . . . . . . . . . . . . . 17 ((𝐴P𝐶P) → ∃𝑧𝐴 ¬ (𝑧 +Q 𝑣) ∈ 𝐴)
25 prub 9504 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (¬ 𝑤𝐴𝑧 <Q 𝑤))
26 ltexnq 9485 . . . . . . . . . . . . . . . . . . . . . 22 (𝑤Q → (𝑧 <Q 𝑤 ↔ ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2726adantl 475 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (𝑧 <Q 𝑤 ↔ ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2825, 27sylibd 224 . . . . . . . . . . . . . . . . . . . 20 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2928ex 443 . . . . . . . . . . . . . . . . . . 19 ((𝐴P𝑧𝐴) → (𝑤Q → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤)))
3029ad2ant2r 770 . . . . . . . . . . . . . . . . . 18 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → (𝑤Q → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤)))
31 vex 3069 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 𝑧 ∈ V
32 vex 3069 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 𝑥 ∈ V
33 addcomnq 9461 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑓 +Q 𝑔) = (𝑔 +Q 𝑓)
34 addassnq 9468 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑓 +Q 𝑔) +Q ) = (𝑓 +Q (𝑔 +Q ))
3531, 22, 32, 33, 34caov32 6571 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑧 +Q 𝑣) +Q 𝑥) = ((𝑧 +Q 𝑥) +Q 𝑣)
36 oveq1 6370 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑥) +Q 𝑣) = (𝑤 +Q 𝑣))
3735, 36syl5eq 2551 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑣) +Q 𝑥) = (𝑤 +Q 𝑣))
3837eleq1d 2567 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑧 +Q 𝑥) = 𝑤 → (((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵 ↔ (𝑤 +Q 𝑣) ∈ 𝐵))
3938biimpar 495 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵)
40 ovex 6391 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑧 +Q 𝑣) ∈ V
41 eleq1 2571 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦 = (𝑧 +Q 𝑣) → (𝑦𝐴 ↔ (𝑧 +Q 𝑣) ∈ 𝐴))
4241notbid 303 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑦 = (𝑧 +Q 𝑣) → (¬ 𝑦𝐴 ↔ ¬ (𝑧 +Q 𝑣) ∈ 𝐴))
43 oveq1 6370 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦 = (𝑧 +Q 𝑣) → (𝑦 +Q 𝑥) = ((𝑧 +Q 𝑣) +Q 𝑥))
4443eleq1d 2567 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑦 = (𝑧 +Q 𝑣) → ((𝑦 +Q 𝑥) ∈ 𝐵 ↔ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵))
4542, 44anbi12d 734 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑦 = (𝑧 +Q 𝑣) → ((¬ 𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵) ↔ (¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵)))
4640, 45spcev 3162 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵) → ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵))
471abeq2i 2617 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑥𝐶 ↔ ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵))
4846, 47sylibr 219 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵) → 𝑥𝐶)
4939, 48sylan2 484 . . . . . . . . . . . . . . . . . . . . . . . 24 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → 𝑥𝐶)
50 df-plp 9493 . . . . . . . . . . . . . . . . . . . . . . . . 25 +P = (𝑥P, 𝑤P ↦ {𝑧 ∣ ∃𝑓𝑥𝑣𝑤 𝑧 = (𝑓 +Q 𝑣)})
51 addclnq 9455 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑓Q𝑣Q) → (𝑓 +Q 𝑣) ∈ Q)
5250, 51genpprecl 9511 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴P𝐶P) → ((𝑧𝐴𝑥𝐶) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))
5349, 52sylan2i 676 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴P𝐶P) → ((𝑧𝐴 ∧ (¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵))) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))
5453exp4d 626 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴P𝐶P) → (𝑧𝐴 → (¬ (𝑧 +Q 𝑣) ∈ 𝐴 → (((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))))
5554imp42 611 . . . . . . . . . . . . . . . . . . . . 21 ((((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶))
56 eleq1 2571 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶) ↔ 𝑤 ∈ (𝐴 +P 𝐶)))
5756ad2antrl 751 . . . . . . . . . . . . . . . . . . . . 21 ((((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → ((𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶) ↔ 𝑤 ∈ (𝐴 +P 𝐶)))
5855, 57mpbid 217 . . . . . . . . . . . . . . . . . . . 20 ((((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → 𝑤 ∈ (𝐴 +P 𝐶))
5958exp32 622 . . . . . . . . . . . . . . . . . . 19 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → ((𝑧 +Q 𝑥) = 𝑤 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶))))
6059exlimdv 1810 . . . . . . . . . . . . . . . . . 18 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → (∃𝑥(𝑧 +Q 𝑥) = 𝑤 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶))))
6130, 60syl6d 72 . . . . . . . . . . . . . . . . 17 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → (𝑤Q → (¬ 𝑤𝐴 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
6224, 61rexlimddv 2910 . . . . . . . . . . . . . . . 16 ((𝐴P𝐶P) → (𝑤Q → (¬ 𝑤𝐴 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
6362com14 92 . . . . . . . . . . . . . . 15 ((𝑤 +Q 𝑣) ∈ 𝐵 → (𝑤Q → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6463adantl 475 . . . . . . . . . . . . . 14 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑤Q → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6521, 64mpd 15 . . . . . . . . . . . . 13 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶))))
6665ex 443 . . . . . . . . . . . 12 (𝐵P → ((𝑤 +Q 𝑣) ∈ 𝐵 → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6766exlimdv 1810 . . . . . . . . . . 11 (𝐵P → (∃𝑣(𝑤 +Q 𝑣) ∈ 𝐵 → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6814, 67syld 45 . . . . . . . . . 10 (𝐵P → (𝑤𝐵 → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6968com4t 89 . . . . . . . . 9 𝑤𝐴 → ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7069expd 445 . . . . . . . 8 𝑤𝐴 → (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7112, 70pm2.61i 171 . . . . . . 7 (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
722, 71syl5 33 . . . . . 6 (𝐴P → ((𝐵P𝐴𝐵) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7372expd 445 . . . . 5 (𝐴P → (𝐵P → (𝐴𝐵 → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7473com34 87 . . . 4 (𝐴P → (𝐵P → (𝐵P → (𝐴𝐵 → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7574pm2.43d 50 . . 3 (𝐴P → (𝐵P → (𝐴𝐵 → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7675imp31 441 . 2 (((𝐴P𝐵P) ∧ 𝐴𝐵) → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))
7776ssrdv 3460 1 (((𝐴P𝐵P) ∧ 𝐴𝐵) → 𝐵 ⊆ (𝐴 +P 𝐶))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 191  wa 378   = wceq 1468  wex 1692  wcel 1937  {cab 2491  wrex 2792  wss 3426  wpss 3427   class class class wbr 4434   × cxp 4878  (class class class)co 6363  Qcnq 9362   +Q cplq 9365   <Q cltq 9368  Pcnp 9369   +P cpp 9371  <P cltp 9373
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1698  ax-4 1711  ax-5 1789  ax-6 1836  ax-7 1883  ax-8 1939  ax-9 1946  ax-10 1965  ax-11 1970  ax-12 1983  ax-13 2137  ax-ext 2485  ax-sep 4558  ax-nul 4567  ax-pow 4619  ax-pr 4680  ax-un 6659  ax-inf2 8231
This theorem depends on definitions:  df-bi 192  df-or 379  df-an 380  df-3or 1022  df-3an 1023  df-tru 1471  df-ex 1693  df-nf 1697  df-sb 1829  df-eu 2357  df-mo 2358  df-clab 2492  df-cleq 2498  df-clel 2501  df-nfc 2635  df-ne 2677  df-ral 2796  df-rex 2797  df-reu 2798  df-rmo 2799  df-rab 2800  df-v 3068  df-sbc 3292  df-csb 3386  df-dif 3429  df-un 3431  df-in 3433  df-ss 3440  df-pss 3442  df-nul 3758  df-if 3909  df-pw 3980  df-sn 3996  df-pr 3998  df-tp 4000  df-op 4002  df-uni 4229  df-int 4265  df-iun 4309  df-br 4435  df-opab 4494  df-mpt 4495  df-tr 4531  df-eprel 4791  df-id 4795  df-po 4801  df-so 4802  df-fr 4839  df-we 4841  df-xp 4886  df-rel 4887  df-cnv 4888  df-co 4889  df-dm 4890  df-rn 4891  df-res 4892  df-ima 4893  df-pred 5431  df-ord 5477  df-on 5478  df-lim 5479  df-suc 5480  df-iota 5597  df-fun 5635  df-fn 5636  df-f 5637  df-f1 5638  df-fo 5639  df-f1o 5640  df-fv 5641  df-ov 6366  df-oprab 6367  df-mpt2 6368  df-om 6770  df-1st 6870  df-2nd 6871  df-wrecs 7105  df-recs 7167  df-rdg 7205  df-1o 7259  df-oadd 7263  df-omul 7264  df-er 7440  df-ni 9382  df-pli 9383  df-mi 9384  df-lti 9385  df-plpq 9418  df-mpq 9419  df-ltpq 9420  df-enq 9421  df-nq 9422  df-erq 9423  df-plq 9424  df-mq 9425  df-1nq 9426  df-rq 9427  df-ltnq 9428  df-np 9491  df-plp 9493  df-ltp 9495
This theorem is referenced by:  ltexpri  9553
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