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Theorem ltexprlem7 9618
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 9616 . . . . . . 7 ((𝐵P𝐴𝐵) → 𝐶P)
3 ltaddpr 9610 . . . . . . . . . . . . . 14 ((𝐴P𝐶P) → 𝐴<P (𝐴 +P 𝐶))
4 addclpr 9594 . . . . . . . . . . . . . . 15 ((𝐴P𝐶P) → (𝐴 +P 𝐶) ∈ P)
5 ltprord 9606 . . . . . . . . . . . . . . 15 ((𝐴P ∧ (𝐴 +P 𝐶) ∈ P) → (𝐴<P (𝐴 +P 𝐶) ↔ 𝐴 ⊊ (𝐴 +P 𝐶)))
64, 5syldan 485 . . . . . . . . . . . . . 14 ((𝐴P𝐶P) → (𝐴<P (𝐴 +P 𝐶) ↔ 𝐴 ⊊ (𝐴 +P 𝐶)))
73, 6mpbid 220 . . . . . . . . . . . . 13 ((𝐴P𝐶P) → 𝐴 ⊊ (𝐴 +P 𝐶))
87pssssd 3570 . . . . . . . . . . . 12 ((𝐴P𝐶P) → 𝐴 ⊆ (𝐴 +P 𝐶))
98sseld 3471 . . . . . . . . . . 11 ((𝐴P𝐶P) → (𝑤𝐴𝑤 ∈ (𝐴 +P 𝐶)))
1092a1d 26 . . . . . . . . . 10 ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵 → (𝑤𝐴𝑤 ∈ (𝐴 +P 𝐶)))))
1110com4r 91 . . . . . . . . 9 (𝑤𝐴 → ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
1211expd 450 . . . . . . . 8 (𝑤𝐴 → (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
13 prnmadd 9573 . . . . . . . . . . . 12 ((𝐵P𝑤𝐵) → ∃𝑣(𝑤 +Q 𝑣) ∈ 𝐵)
1413ex 448 . . . . . . . . . . 11 (𝐵P → (𝑤𝐵 → ∃𝑣(𝑤 +Q 𝑣) ∈ 𝐵))
15 elprnq 9567 . . . . . . . . . . . . . . . 16 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑤 +Q 𝑣) ∈ Q)
16 addnqf 9524 . . . . . . . . . . . . . . . . . 18 +Q :(Q × Q)⟶Q
1716fdmi 5850 . . . . . . . . . . . . . . . . 17 dom +Q = (Q × Q)
18 0nnq 9500 . . . . . . . . . . . . . . . . 17 ¬ ∅ ∈ Q
1917, 18ndmovrcl 6593 . . . . . . . . . . . . . . . 16 ((𝑤 +Q 𝑣) ∈ Q → (𝑤Q𝑣Q))
2015, 19syl 17 . . . . . . . . . . . . . . 15 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑤Q𝑣Q))
2120simpld 473 . . . . . . . . . . . . . 14 ((𝐵P ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → 𝑤Q)
22 vex 3080 . . . . . . . . . . . . . . . . . . 19 𝑣 ∈ V
2322prlem934 9609 . . . . . . . . . . . . . . . . . 18 (𝐴P → ∃𝑧𝐴 ¬ (𝑧 +Q 𝑣) ∈ 𝐴)
2423adantr 479 . . . . . . . . . . . . . . . . 17 ((𝐴P𝐶P) → ∃𝑧𝐴 ¬ (𝑧 +Q 𝑣) ∈ 𝐴)
25 prub 9570 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (¬ 𝑤𝐴𝑧 <Q 𝑤))
26 ltexnq 9551 . . . . . . . . . . . . . . . . . . . . . 22 (𝑤Q → (𝑧 <Q 𝑤 ↔ ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2726adantl 480 . . . . . . . . . . . . . . . . . . . . 21 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (𝑧 <Q 𝑤 ↔ ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2825, 27sylibd 227 . . . . . . . . . . . . . . . . . . . 20 (((𝐴P𝑧𝐴) ∧ 𝑤Q) → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤))
2928ex 448 . . . . . . . . . . . . . . . . . . 19 ((𝐴P𝑧𝐴) → (𝑤Q → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤)))
3029ad2ant2r 778 . . . . . . . . . . . . . . . . . 18 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → (𝑤Q → (¬ 𝑤𝐴 → ∃𝑥(𝑧 +Q 𝑥) = 𝑤)))
31 vex 3080 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 𝑧 ∈ V
32 vex 3080 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 𝑥 ∈ V
33 addcomnq 9527 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑓 +Q 𝑔) = (𝑔 +Q 𝑓)
34 addassnq 9534 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ((𝑓 +Q 𝑔) +Q ) = (𝑓 +Q (𝑔 +Q ))
3531, 22, 32, 33, 34caov32 6634 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑧 +Q 𝑣) +Q 𝑥) = ((𝑧 +Q 𝑥) +Q 𝑣)
36 oveq1 6432 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑥) +Q 𝑣) = (𝑤 +Q 𝑣))
3735, 36syl5eq 2560 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑣) +Q 𝑥) = (𝑤 +Q 𝑣))
3837eleq1d 2576 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((𝑧 +Q 𝑥) = 𝑤 → (((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵 ↔ (𝑤 +Q 𝑣) ∈ 𝐵))
3938biimpar 500 . . . . . . . . . . . . . . . . . . . . . . . . 25 (((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵)
40 ovex 6453 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑧 +Q 𝑣) ∈ V
41 eleq1 2580 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦 = (𝑧 +Q 𝑣) → (𝑦𝐴 ↔ (𝑧 +Q 𝑣) ∈ 𝐴))
4241notbid 306 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑦 = (𝑧 +Q 𝑣) → (¬ 𝑦𝐴 ↔ ¬ (𝑧 +Q 𝑣) ∈ 𝐴))
43 oveq1 6432 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 (𝑦 = (𝑧 +Q 𝑣) → (𝑦 +Q 𝑥) = ((𝑧 +Q 𝑣) +Q 𝑥))
4443eleq1d 2576 . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 (𝑦 = (𝑧 +Q 𝑣) → ((𝑦 +Q 𝑥) ∈ 𝐵 ↔ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵))
4542, 44anbi12d 742 . . . . . . . . . . . . . . . . . . . . . . . . . . 27 (𝑦 = (𝑧 +Q 𝑣) → ((¬ 𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵) ↔ (¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵)))
4640, 45spcev 3177 . . . . . . . . . . . . . . . . . . . . . . . . . 26 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵) → ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵))
471abeq2i 2626 . . . . . . . . . . . . . . . . . . . . . . . . . 26 (𝑥𝐶 ↔ ∃𝑦𝑦𝐴 ∧ (𝑦 +Q 𝑥) ∈ 𝐵))
4846, 47sylibr 222 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑣) +Q 𝑥) ∈ 𝐵) → 𝑥𝐶)
4939, 48sylan2 489 . . . . . . . . . . . . . . . . . . . . . . . 24 ((¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → 𝑥𝐶)
50 df-plp 9559 . . . . . . . . . . . . . . . . . . . . . . . . 25 +P = (𝑥P, 𝑤P ↦ {𝑧 ∣ ∃𝑓𝑥𝑣𝑤 𝑧 = (𝑓 +Q 𝑣)})
51 addclnq 9521 . . . . . . . . . . . . . . . . . . . . . . . . 25 ((𝑓Q𝑣Q) → (𝑓 +Q 𝑣) ∈ Q)
5250, 51genpprecl 9577 . . . . . . . . . . . . . . . . . . . . . . . 24 ((𝐴P𝐶P) → ((𝑧𝐴𝑥𝐶) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))
5349, 52sylan2i 684 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐴P𝐶P) → ((𝑧𝐴 ∧ (¬ (𝑧 +Q 𝑣) ∈ 𝐴 ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵))) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))
5453exp4d 634 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐴P𝐶P) → (𝑧𝐴 → (¬ (𝑧 +Q 𝑣) ∈ 𝐴 → (((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶)))))
5554imp42 617 . . . . . . . . . . . . . . . . . . . . 21 ((((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → (𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶))
56 eleq1 2580 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑧 +Q 𝑥) = 𝑤 → ((𝑧 +Q 𝑥) ∈ (𝐴 +P 𝐶) ↔ 𝑤 ∈ (𝐴 +P 𝐶)))
5756ad2antrl 759 . . . . . . . . . . . . . . . . . . . . 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 220 . . . . . . . . . . . . . . . . . . . 20 ((((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) ∧ ((𝑧 +Q 𝑥) = 𝑤 ∧ (𝑤 +Q 𝑣) ∈ 𝐵)) → 𝑤 ∈ (𝐴 +P 𝐶))
5958exp32 628 . . . . . . . . . . . . . . . . . . 19 (((𝐴P𝐶P) ∧ (𝑧𝐴 ∧ ¬ (𝑧 +Q 𝑣) ∈ 𝐴)) → ((𝑧 +Q 𝑥) = 𝑤 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶))))
6059exlimdv 1814 . . . . . . . . . . . . . . . . . 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 2921 . . . . . . . . . . . . . . . 16 ((𝐴P𝐶P) → (𝑤Q → (¬ 𝑤𝐴 → ((𝑤 +Q 𝑣) ∈ 𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
6362com14 93 . . . . . . . . . . . . . . 15 ((𝑤 +Q 𝑣) ∈ 𝐵 → (𝑤Q → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6463adantl 480 . . . . . . . . . . . . . 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 448 . . . . . . . . . . . 12 (𝐵P → ((𝑤 +Q 𝑣) ∈ 𝐵 → (¬ 𝑤𝐴 → ((𝐴P𝐶P) → 𝑤 ∈ (𝐴 +P 𝐶)))))
6766exlimdv 1814 . . . . . . . . . . 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 90 . . . . . . . . 9 𝑤𝐴 → ((𝐴P𝐶P) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7069expd 450 . . . . . . . 8 𝑤𝐴 → (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7112, 70pm2.61i 174 . . . . . . 7 (𝐴P → (𝐶P → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
722, 71syl5 33 . . . . . 6 (𝐴P → ((𝐵P𝐴𝐵) → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7372expd 450 . . . . 5 (𝐴P → (𝐵P → (𝐴𝐵 → (𝐵P → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7473com34 88 . . . 4 (𝐴P → (𝐵P → (𝐵P → (𝐴𝐵 → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶))))))
7574pm2.43d 50 . . 3 (𝐴P → (𝐵P → (𝐴𝐵 → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))))
7675imp31 446 . 2 (((𝐴P𝐵P) ∧ 𝐴𝐵) → (𝑤𝐵𝑤 ∈ (𝐴 +P 𝐶)))
7776ssrdv 3478 1 (((𝐴P𝐵P) ∧ 𝐴𝐵) → 𝐵 ⊆ (𝐴 +P 𝐶))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 194  wa 382   = wceq 1474  wex 1694  wcel 1938  {cab 2500  wrex 2801  wss 3444  wpss 3445   class class class wbr 4481   × cxp 4930  (class class class)co 6425  Qcnq 9428   +Q cplq 9431   <Q cltq 9434  Pcnp 9435   +P cpp 9437  <P cltp 9439
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1700  ax-4 1713  ax-5 1793  ax-6 1838  ax-7 1885  ax-8 1940  ax-9 1947  ax-10 1966  ax-11 1971  ax-12 1983  ax-13 2137  ax-ext 2494  ax-sep 4607  ax-nul 4616  ax-pow 4668  ax-pr 4732  ax-un 6722  ax-inf2 8296
This theorem depends on definitions:  df-bi 195  df-or 383  df-an 384  df-3or 1031  df-3an 1032  df-tru 1477  df-ex 1695  df-nf 1699  df-sb 1831  df-eu 2366  df-mo 2367  df-clab 2501  df-cleq 2507  df-clel 2510  df-nfc 2644  df-ne 2686  df-ral 2805  df-rex 2806  df-reu 2807  df-rmo 2808  df-rab 2809  df-v 3079  df-sbc 3307  df-csb 3404  df-dif 3447  df-un 3449  df-in 3451  df-ss 3458  df-pss 3460  df-nul 3778  df-if 3940  df-pw 4013  df-sn 4029  df-pr 4031  df-tp 4033  df-op 4035  df-uni 4271  df-int 4309  df-iun 4355  df-br 4482  df-opab 4542  df-mpt 4543  df-tr 4579  df-eprel 4843  df-id 4847  df-po 4853  df-so 4854  df-fr 4891  df-we 4893  df-xp 4938  df-rel 4939  df-cnv 4940  df-co 4941  df-dm 4942  df-rn 4943  df-res 4944  df-ima 4945  df-pred 5487  df-ord 5533  df-on 5534  df-lim 5535  df-suc 5536  df-iota 5653  df-fun 5691  df-fn 5692  df-f 5693  df-f1 5694  df-fo 5695  df-f1o 5696  df-fv 5697  df-ov 6428  df-oprab 6429  df-mpt2 6430  df-om 6833  df-1st 6933  df-2nd 6934  df-wrecs 7168  df-recs 7230  df-rdg 7268  df-1o 7322  df-oadd 7326  df-omul 7327  df-er 7504  df-ni 9448  df-pli 9449  df-mi 9450  df-lti 9451  df-plpq 9484  df-mpq 9485  df-ltpq 9486  df-enq 9487  df-nq 9488  df-erq 9489  df-plq 9490  df-mq 9491  df-1nq 9492  df-rq 9493  df-ltnq 9494  df-np 9557  df-plp 9559  df-ltp 9561
This theorem is referenced by:  ltexpri  9619
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