Theorem reclem4pr 10464

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 10462	. . . . . 6 ⊢ (𝐴 ∈ P → 𝐵 ∈ P)
3		df-mp 10398	. . . . . . 7 ⊢ ·P = (𝑦 ∈ P, 𝑤 ∈ P ↦ {𝑢 ∣ ∃𝑓 ∈ 𝑦 ∃𝑔 ∈ 𝑤 𝑢 = (𝑓 ·Q 𝑔)})
4		mulclnq 10361	. . . . . . 7 ⊢ ((𝑓 ∈ Q ∧ 𝑔 ∈ Q) → (𝑓 ·Q 𝑔) ∈ Q)
5	3, 4	genpelv 10414	. . . . . 6 ⊢ ((𝐴 ∈ P ∧ 𝐵 ∈ P) → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥)))
6	2, 5	mpdan 685	. . . . 5 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥)))
7	1	abeq2i 2946	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐵 ↔ ∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴))
8		ltrelnq 10340	. . . . . . . . . . . . . . 15 ⊢ <Q ⊆ (Q × Q)
9	8	brel 5610	. . . . . . . . . . . . . 14 ⊢ (𝑥 <Q 𝑦 → (𝑥 ∈ Q ∧ 𝑦 ∈ Q))
10	9	simprd 498	. . . . . . . . . . . . 13 ⊢ (𝑥 <Q 𝑦 → 𝑦 ∈ Q)
11		elprnq 10405	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ Q)
12		ltmnq 10386	. . . . . . . . . . . . . . . . . . 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 231	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
15	14	adantr 483	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (𝑥 <Q 𝑦 → (𝑧 ·Q 𝑥) <Q (𝑧 ·Q 𝑦)))
16		recclnq 10380	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ Q → (*Q‘𝑦) ∈ Q)
17		prub 10408	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ (*Q‘𝑦) ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → 𝑧 <Q (*Q‘𝑦)))
18	16, 17	sylan2 594	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → 𝑧 <Q (*Q‘𝑦)))
19		ltmnq 10386	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ Q → (𝑧 <Q (*Q‘𝑦) ↔ (𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q‘𝑦))))
20		mulcomnq 10367	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦)
21	20	a1i 11	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ Q → (𝑦 ·Q 𝑧) = (𝑧 ·Q 𝑦))
22		recidnq 10379	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ Q → (𝑦 ·Q (*Q‘𝑦)) = 1Q)
23	21, 22	breq12d 5070	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ Q → ((𝑦 ·Q 𝑧) <Q (𝑦 ·Q (*Q‘𝑦)) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
24	19, 23	bitrd 281	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ Q → (𝑧 <Q (*Q‘𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
25	24	adantl 484	. . . . . . . . . . . . . . . . 17 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (𝑧 <Q (*Q‘𝑦) ↔ (𝑧 ·Q 𝑦) <Q 1Q))
26	18, 25	sylibd 241	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) ∧ 𝑦 ∈ Q) → (¬ (*Q‘𝑦) ∈ 𝐴 → (𝑧 ·Q 𝑦) <Q 1Q))
27	15, 26	anim12d 610	. . . . . . . . . . . . . . 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 10383	. . . . . . . . . . . . . . . 16 ⊢ <Q Or Q
29	28, 8	sotri 5980	. . . . . . . . . . . . . . 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 433	. . . . . . . . . . . . 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 413	. . . . . . . . . 10 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → ((𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
35	34	exlimdv 1928	. . . . . . . . 9 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (∃𝑦(𝑥 <Q 𝑦 ∧ ¬ (*Q‘𝑦) ∈ 𝐴) → (𝑧 ·Q 𝑥) <Q 1Q))
36	7, 35	syl5bi 244	. . . . . . . 8 ⊢ ((𝐴 ∈ P ∧ 𝑧 ∈ 𝐴) → (𝑥 ∈ 𝐵 → (𝑧 ·Q 𝑥) <Q 1Q))
37		breq1 5060	. . . . . . . . 9 ⊢ (𝑤 = (𝑧 ·Q 𝑥) → (𝑤 <Q 1Q ↔ (𝑧 ·Q 𝑥) <Q 1Q))
38	37	biimprcd 252	. . . . . . . 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 456	. . . . . 6 ⊢ (𝐴 ∈ P → ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ 𝐵) → (𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q)))
41	40	rexlimdvv 3291	. . . . 5 ⊢ (𝐴 ∈ P → (∃𝑧 ∈ 𝐴 ∃𝑥 ∈ 𝐵 𝑤 = (𝑧 ·Q 𝑥) → 𝑤 <Q 1Q))
42	6, 41	sylbid 242	. . . 4 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 <Q 1Q))
43		df-1p 10396	. . . . 5 ⊢ 1P = {𝑤 ∣ 𝑤 <Q 1Q}
44	43	abeq2i 2946	. . . 4 ⊢ (𝑤 ∈ 1P ↔ 𝑤 <Q 1Q)
45	42, 44	syl6ibr 254	. . 3 ⊢ (𝐴 ∈ P → (𝑤 ∈ (𝐴 ·P 𝐵) → 𝑤 ∈ 1P))
46	45	ssrdv 3971	. 2 ⊢ (𝐴 ∈ P → (𝐴 ·P 𝐵) ⊆ 1P)
47	1	reclem3pr 10463	. 2 ⊢ (𝐴 ∈ P → 1P ⊆ (𝐴 ·P 𝐵))
48	46, 47	eqssd 3982	1 ⊢ (𝐴 ∈ P → (𝐴 ·P 𝐵) = 1P)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1531  ∃wex 1774   ∈ wcel 2108  {cab 2797  ∃wrex 3137   class class class wbr 5057  ‘cfv 6348  (class class class)co 7148  Qcnq 10266  1_Qc1q 10267   ·_Q cmq 10270  *_Qcrq 10271   <_Q cltq 10272  Pcnp 10273  1_Pc1p 10274   ·_P cmp 10276

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1905  ax-6 1964  ax-7 2009  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2154  ax-12 2170  ax-ext 2791  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453  ax-inf2 9096

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1083  df-3an 1084  df-tru 1534  df-ex 1775  df-nf 1779  df-sb 2064  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rmo 3144  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-pss 3952  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-tp 4564  df-op 4566  df-uni 4831  df-int 4868  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-tr 5164  df-id 5453  df-eprel 5458  df-po 5467  df-so 5468  df-fr 5507  df-we 5509  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-pred 6141  df-ord 6187  df-on 6188  df-lim 6189  df-suc 6190  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-ov 7151  df-oprab 7152  df-mpo 7153  df-om 7573  df-1st 7681  df-2nd 7682  df-wrecs 7939  df-recs 8000  df-rdg 8038  df-1o 8094  df-oadd 8098  df-omul 8099  df-er 8281  df-ni 10286  df-pli 10287  df-mi 10288  df-lti 10289  df-plpq 10322  df-mpq 10323  df-ltpq 10324  df-enq 10325  df-nq 10326  df-erq 10327  df-plq 10328  df-mq 10329  df-1nq 10330  df-rq 10331  df-ltnq 10332  df-np 10395  df-1p 10396  df-mp 10398

This theorem is referenced by:  recexpr  10465