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Theorem reclem4pr 9728
Description: Lemma for Proposition 9-3.7(v) of [Gleason] p. 124. (Contributed by NM, 30-Apr-1996.) (New usage is discouraged.)
Hypothesis
Ref Expression
reclempr.1 𝐵 = {𝑥 ∣ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴)}
Assertion
Ref Expression
reclem4pr (𝐴P → (𝐴 ·P 𝐵) = 1P)
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵
Allowed substitution hint:   𝐵(𝑦)

Proof of Theorem reclem4pr
Dummy variables 𝑧 𝑤 𝑢 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 reclempr.1 . . . . . . 7 𝐵 = {𝑥 ∣ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴)}
21reclem2pr 9726 . . . . . 6 (𝐴P𝐵P)
3 df-mp 9662 . . . . . . 7 ·P = (𝑦P, 𝑤P ↦ {𝑢 ∣ ∃𝑓𝑦𝑔𝑤 𝑢 = (𝑓 ·Q 𝑔)})
4 mulclnq 9625 . . . . . . 7 ((𝑓Q𝑔Q) → (𝑓 ·Q 𝑔) ∈ Q)
53, 4genpelv 9678 . . . . . 6 ((𝐴P𝐵P) → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧𝐴𝑥𝐵 𝑤 = (𝑧 ·Q 𝑥)))
62, 5mpdan 698 . . . . 5 (𝐴P → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧𝐴𝑥𝐵 𝑤 = (𝑧 ·Q 𝑥)))
71abeq2i 2721 . . . . . . . . 9 (𝑥𝐵 ↔ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴))
8 ltrelnq 9604 . . . . . . . . . . . . . . 15 <Q ⊆ (Q × Q)
98brel 5079 . . . . . . . . . . . . . 14 (𝑥 <Q 𝑦 → (𝑥Q𝑦Q))
109simprd 477 . . . . . . . . . . . . 13 (𝑥 <Q 𝑦𝑦Q)
11 elprnq 9669 . . . . . . . . . . . . . . . . . . 19 ((𝐴P𝑧𝐴) → 𝑧Q)
12 ltmnq 9650 . . . . . . . . . . . . . . . . . . 19 (𝑧Q → (𝑥 <Q 𝑦 ↔ (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
1311, 12syl 17 . . . . . . . . . . . . . . . . . 18 ((𝐴P𝑧𝐴) → (𝑥 <Q 𝑦 ↔ (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
1413biimpd 217 . . . . . . . . . . . . . . . . 17 ((𝐴P𝑧𝐴) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
1514adantr 479 . . . . . . . . . . . . . . . 16 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
16 recclnq 9644 . . . . . . . . . . . . . . . . . 18 (𝑦Q → (*Q𝑦) ∈ Q)
17 prub 9672 . . . . . . . . . . . . . . . . . 18 (((𝐴P𝑧𝐴) ∧ (*Q𝑦) ∈ Q) → (¬ (*Q𝑦) ∈ 𝐴𝑧 <Q (*Q𝑦)))
1816, 17sylan2 489 . . . . . . . . . . . . . . . . 17 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → (¬ (*Q𝑦) ∈ 𝐴𝑧 <Q (*Q𝑦)))
19 ltmnq 9650 . . . . . . . . . . . . . . . . . . 19 (𝑦Q → (𝑧 <Q (*Q𝑦) ↔ (𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q𝑦))))
20 mulcomnq 9631 . . . . . . . . . . . . . . . . . . . . 21 (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦)
2120a1i 11 . . . . . . . . . . . . . . . . . . . 20 (𝑦Q → (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦))
22 recidnq 9643 . . . . . . . . . . . . . . . . . . . 20 (𝑦Q → (𝑦 ·Q (*Q𝑦)) = 1Q)
2321, 22breq12d 4590 . . . . . . . . . . . . . . . . . . 19 (𝑦Q → ((𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q𝑦)) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
2419, 23bitrd 266 . . . . . . . . . . . . . . . . . 18 (𝑦Q → (𝑧 <Q (*Q𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
2524adantl 480 . . . . . . . . . . . . . . . . 17 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → (𝑧 <Q (*Q𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
2618, 25sylibd 227 . . . . . . . . . . . . . . . 16 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → (¬ (*Q𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑦) <Q 1Q))
2715, 26anim12d 583 . . . . . . . . . . . . . . 15 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴) → ((𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦) ∧ (𝑧 ·Q 𝑦) <Q 1Q)))
28 ltsonq 9647 . . . . . . . . . . . . . . . 16 <Q Or Q
2928, 8sotri 5428 . . . . . . . . . . . . . . 15 (((𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦) ∧ (𝑧 ·Q 𝑦) <Q 1Q) → (𝑧 ·Q 𝑥) <Q 1Q)
3027, 29syl6 34 . . . . . . . . . . . . . 14 (((𝐴P𝑧𝐴) ∧ 𝑦Q) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
3130exp4b 629 . . . . . . . . . . . . 13 ((𝐴P𝑧𝐴) → (𝑦Q → (𝑥 <Q 𝑦 → (¬ (*Q𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q))))
3210, 31syl5 33 . . . . . . . . . . . 12 ((𝐴P𝑧𝐴) → (𝑥 <Q 𝑦 → (𝑥 <Q 𝑦 → (¬ (*Q𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q))))
3332pm2.43d 50 . . . . . . . . . . 11 ((𝐴P𝑧𝐴) → (𝑥 <Q 𝑦 → (¬ (*Q𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q)))
3433impd 445 . . . . . . . . . 10 ((𝐴P𝑧𝐴) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
3534exlimdv 1847 . . . . . . . . 9 ((𝐴P𝑧𝐴) → (∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
367, 35syl5bi 230 . . . . . . . 8 ((𝐴P𝑧𝐴) → (𝑥𝐵 → (𝑧 ·Q 𝑥) <Q 1Q))
37 breq1 4580 . . . . . . . . 9 (𝑤 = (𝑧 ·Q 𝑥) → (𝑤 <Q 1Q ↔ (𝑧 ·Q 𝑥) <Q 1Q))
3837biimprcd 238 . . . . . . . 8 ((𝑧 ·Q 𝑥) <Q 1Q → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q))
3936, 38syl6 34 . . . . . . 7 ((𝐴P𝑧𝐴) → (𝑥𝐵 → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q)))
4039expimpd 626 . . . . . 6 (𝐴P → ((𝑧𝐴𝑥𝐵) → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q)))
4140rexlimdvv 3018 . . . . 5 (𝐴P → (∃𝑧𝐴𝑥𝐵 𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q))
426, 41sylbid 228 . . . 4 (𝐴P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 <Q 1Q))
43 df-1p 9660 . . . . 5 1P = {𝑤𝑤 <Q 1Q}
4443abeq2i 2721 . . . 4 (𝑤 ∈ 1P𝑤 <Q 1Q)
4542, 44syl6ibr 240 . . 3 (𝐴P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 ∈ 1P))
4645ssrdv 3573 . 2 (𝐴P → (𝐴 ·P 𝐵) ⊆ 1P)
471reclem3pr 9727 . 2 (𝐴P → 1P ⊆ (𝐴 ·P 𝐵))
4846, 47eqssd 3584 1 (𝐴P → (𝐴 ·P 𝐵) = 1P)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 194  wa 382   = wceq 1474  wex 1694  wcel 1976  {cab 2595  wrex 2896   class class class wbr 4577  cfv 5789  (class class class)co 6526  Qcnq 9530  1Qc1q 9531   ·Q cmq 9534  *Qcrq 9535   <Q cltq 9536  Pcnp 9537  1Pc1p 9538   ·P cmp 9540
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1712  ax-4 1727  ax-5 1826  ax-6 1874  ax-7 1921  ax-8 1978  ax-9 1985  ax-10 2005  ax-11 2020  ax-12 2033  ax-13 2233  ax-ext 2589  ax-sep 4703  ax-nul 4711  ax-pow 4763  ax-pr 4827  ax-un 6824  ax-inf2 8398
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 1700  df-sb 1867  df-eu 2461  df-mo 2462  df-clab 2596  df-cleq 2602  df-clel 2605  df-nfc 2739  df-ne 2781  df-ral 2900  df-rex 2901  df-reu 2902  df-rmo 2903  df-rab 2904  df-v 3174  df-sbc 3402  df-csb 3499  df-dif 3542  df-un 3544  df-in 3546  df-ss 3553  df-pss 3555  df-nul 3874  df-if 4036  df-pw 4109  df-sn 4125  df-pr 4127  df-tp 4129  df-op 4131  df-uni 4367  df-int 4405  df-iun 4451  df-br 4578  df-opab 4638  df-mpt 4639  df-tr 4675  df-eprel 4938  df-id 4942  df-po 4948  df-so 4949  df-fr 4986  df-we 4988  df-xp 5033  df-rel 5034  df-cnv 5035  df-co 5036  df-dm 5037  df-rn 5038  df-res 5039  df-ima 5040  df-pred 5582  df-ord 5628  df-on 5629  df-lim 5630  df-suc 5631  df-iota 5753  df-fun 5791  df-fn 5792  df-f 5793  df-f1 5794  df-fo 5795  df-f1o 5796  df-fv 5797  df-ov 6529  df-oprab 6530  df-mpt2 6531  df-om 6935  df-1st 7036  df-2nd 7037  df-wrecs 7271  df-recs 7332  df-rdg 7370  df-1o 7424  df-oadd 7428  df-omul 7429  df-er 7606  df-ni 9550  df-pli 9551  df-mi 9552  df-lti 9553  df-plpq 9586  df-mpq 9587  df-ltpq 9588  df-enq 9589  df-nq 9590  df-erq 9591  df-plq 9592  df-mq 9593  df-1nq 9594  df-rq 9595  df-ltnq 9596  df-np 9659  df-1p 9660  df-mp 9662
This theorem is referenced by:  recexpr  9729
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