Theorem reclem4pr 9872

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 ∧ ¬ (*Q‘𝑦) ∈ 𝐴)}

Assertion

Ref	Expression
reclem4pr	⊢ (𝐴 ∈ P → (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.

Step	Hyp	Ref	Expression
1		reclempr.1	. . . . . . 7 ⊢ 𝐵 = {𝑥 ∣ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴)}
2	1	reclem2pr 9870	. . . . . 6 ⊢ (𝐴 ∈ P → 𝐵 ∈ P)
3		df-mp 9806	. . . . . . 7 ⊢ ·P = (𝑦 ∈ P, 𝑤 ∈ P ↦ {𝑢 ∣ ∃𝑓 ∈ 𝑦 ∃𝑔 ∈ 𝑤 𝑢 = (𝑓 ·Q 𝑔)})
4		mulclnq 9769	. . . . . . 7 ⊢ ((𝑓 ∈ Q ∧ 𝑔 ∈ Q) → (𝑓 ·Q 𝑔) ∈ Q)
5	3, 4	genpelv 9822	. . . . . 6 ⊢ ((𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥)))
6	2, 5	mpdan 702	. . . . 5 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥)))
7	1	abeq2i 2735	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐵 ↔ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴))
8		ltrelnq 9748	. . . . . . . . . . . . . . 15 ⊢ <Q ⊆ (Q × Q)
9	8	brel 5168	. . . . . . . . . . . . . 14 ⊢ (𝑥 <Q 𝑦 → (𝑥 ∈ Q ∧ 𝑦 ∈ Q))
10	9	simprd 479	. . . . . . . . . . . . 13 ⊢ (𝑥 <Q 𝑦 → 𝑦 ∈ Q)
11		elprnq 9813	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ Q)
12		ltmnq 9794	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ Q → (𝑥 <Q 𝑦 ↔ (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
13	11, 12	syl 17	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 <Q 𝑦 ↔ (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
14	13	biimpd 219	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
15	14	adantr 481	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
16		recclnq 9788	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ Q → (*Q‘𝑦) ∈ Q)
17		prub 9816	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ (*Q‘𝑦) ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → 𝑧 <Q (*Q‘𝑦)))
18	16, 17	sylan2 491	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → 𝑧 <Q (*Q‘𝑦)))
19		ltmnq 9794	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ Q → (𝑧 <Q (*Q‘𝑦) ↔ (𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q‘𝑦))))
20		mulcomnq 9775	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦)
21	20	a1i 11	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ Q → (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦))
22		recidnq 9787	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ Q → (𝑦 ·Q (*Q‘𝑦)) = 1Q)
23	21, 22	breq12d 4666	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ Q → ((𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q‘𝑦)) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
24	19, 23	bitrd 268	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ Q → (𝑧 <Q (*Q‘𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
25	24	adantl 482	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (𝑧 <Q (*Q‘𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
26	18, 25	sylibd 229	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑦) <Q 1Q))
27	15, 26	anim12d 586	. . . . . . . . . . . . . . 15 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → ((𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦) ∧ (𝑧 ·Q 𝑦) <Q 1Q)))
28		ltsonq 9791	. . . . . . . . . . . . . . . 16 ⊢ <Q Or Q
29	28, 8	sotri 5523	. . . . . . . . . . . . . . 15 ⊢ (((𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦) ∧ (𝑧 ·Q 𝑦) <Q 1Q) → (𝑧 ·Q 𝑥) <Q 1Q)
30	27, 29	syl6 35	. . . . . . . . . . . . . 14 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
31	30	exp4b 632	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑦 ∈ Q → (𝑥 <Q 𝑦 → (¬ (*Q‘𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q))))
32	10, 31	syl5 34	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 <Q 𝑦 → (𝑥 <Q 𝑦 → (¬ (*Q‘𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q))))
33	32	pm2.43d 53	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 <Q 𝑦 → (¬ (*Q‘𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑥) <Q 1Q)))
34	33	impd 447	. . . . . . . . . 10 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
35	34	exlimdv 1861	. . . . . . . . 9 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
36	7, 35	syl5bi 232	. . . . . . . 8 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 ∈ 𝐵 → (𝑧 ·Q 𝑥) <Q 1Q))
37		breq1 4656	. . . . . . . . 9 ⊢ (𝑤 = (𝑧 ·Q 𝑥) → (𝑤 <Q 1Q ↔ (𝑧 ·Q 𝑥) <Q 1Q))
38	37	biimprcd 240	. . . . . . . 8 ⊢ ((𝑧 ·Q 𝑥) <Q 1Q → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q))
39	36, 38	syl6 35	. . . . . . 7 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 ∈ 𝐵 → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q)))
40	39	expimpd 629	. . . . . 6 ⊢ (𝐴 ∈ P → ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ 𝐵) → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q)))
41	40	rexlimdvv 3037	. . . . 5 ⊢ (𝐴 ∈ P → (∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q))
42	6, 41	sylbid 230	. . . 4 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 <Q 1Q))
43		df-1p 9804	. . . . 5 ⊢ 1P = {𝑤 ∣ 𝑤 <Q 1Q}
44	43	abeq2i 2735	. . . 4 ⊢ (𝑤 ∈ 1P ↔ 𝑤 <Q 1Q)
45	42, 44	syl6ibr 242	. . 3 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 ∈ 1P))
46	45	ssrdv 3609	. 2 ⊢ (𝐴 ∈ P → (𝐴 ·P 𝐵) ⊆ 1P)
47	1	reclem3pr 9871	. 2 ⊢ (𝐴 ∈ P → 1P ⊆ (𝐴 ·P 𝐵))
48	46, 47	eqssd 3620	1 ⊢ (𝐴 ∈ P → (𝐴 ·P 𝐵) = 1P)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483  ∃wex 1704   ∈ wcel 1990  {cab 2608  ∃wrex 2913   class class class wbr 4653  ‘cfv 5888  (class class class)co 6650  Qcnq 9674  1_Qc1q 9675   ·_Q cmq 9678  *_Qcrq 9679   <_Q cltq 9680  Pcnp 9681  1_Pc1p 9682   ·_P cmp 9684

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-inf2 8538

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-omul 7565  df-er 7742  df-ni 9694  df-pli 9695  df-mi 9696  df-lti 9697  df-plpq 9730  df-mpq 9731  df-ltpq 9732  df-enq 9733  df-nq 9734  df-erq 9735  df-plq 9736  df-mq 9737  df-1nq 9738  df-rq 9739  df-ltnq 9740  df-np 9803  df-1p 9804  df-mp 9806

This theorem is referenced by:  recexpr  9873