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Theorem recexprlem1ssl 7448
Description: The lower cut of one is a subset of the lower cut of 𝐴 ·P 𝐵. Lemma for recexpr 7453. (Contributed by Jim Kingdon, 27-Dec-2019.)
Hypothesis
Ref Expression
recexpr.1 𝐵 = ⟨{𝑥 ∣ ∃𝑦(𝑥 <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴))}, {𝑥 ∣ ∃𝑦(𝑦 <Q 𝑥 ∧ (*Q𝑦) ∈ (1st𝐴))}⟩
Assertion
Ref Expression
recexprlem1ssl (𝐴P → (1st ‘1P) ⊆ (1st ‘(𝐴 ·P 𝐵)))
Distinct variable groups:   𝑥,𝑦,𝐴   𝑥,𝐵,𝑦

Proof of Theorem recexprlem1ssl
Dummy variables 𝑧 𝑤 𝑣 𝑢 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 1prl 7370 . . . 4 (1st ‘1P) = {𝑤𝑤 <Q 1Q}
21abeq2i 2250 . . 3 (𝑤 ∈ (1st ‘1P) ↔ 𝑤 <Q 1Q)
3 rec1nq 7210 . . . . . . 7 (*Q‘1Q) = 1Q
4 ltrnqi 7236 . . . . . . 7 (𝑤 <Q 1Q → (*Q‘1Q) <Q (*Q𝑤))
53, 4eqbrtrrid 3964 . . . . . 6 (𝑤 <Q 1Q → 1Q <Q (*Q𝑤))
6 prop 7290 . . . . . . 7 (𝐴P → ⟨(1st𝐴), (2nd𝐴)⟩ ∈ P)
7 prmuloc2 7382 . . . . . . 7 ((⟨(1st𝐴), (2nd𝐴)⟩ ∈ P ∧ 1Q <Q (*Q𝑤)) → ∃𝑣 ∈ (1st𝐴)(𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))
86, 7sylan 281 . . . . . 6 ((𝐴P ∧ 1Q <Q (*Q𝑤)) → ∃𝑣 ∈ (1st𝐴)(𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))
95, 8sylan2 284 . . . . 5 ((𝐴P𝑤 <Q 1Q) → ∃𝑣 ∈ (1st𝐴)(𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))
10 prnmaxl 7303 . . . . . . . 8 ((⟨(1st𝐴), (2nd𝐴)⟩ ∈ P𝑣 ∈ (1st𝐴)) → ∃𝑧 ∈ (1st𝐴)𝑣 <Q 𝑧)
116, 10sylan 281 . . . . . . 7 ((𝐴P𝑣 ∈ (1st𝐴)) → ∃𝑧 ∈ (1st𝐴)𝑣 <Q 𝑧)
1211ad2ant2r 500 . . . . . 6 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ∃𝑧 ∈ (1st𝐴)𝑣 <Q 𝑧)
13 elprnql 7296 . . . . . . . . . . . . . 14 ((⟨(1st𝐴), (2nd𝐴)⟩ ∈ P𝑣 ∈ (1st𝐴)) → 𝑣Q)
146, 13sylan 281 . . . . . . . . . . . . 13 ((𝐴P𝑣 ∈ (1st𝐴)) → 𝑣Q)
1514ad2ant2r 500 . . . . . . . . . . . 12 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → 𝑣Q)
16153adant3 1001 . . . . . . . . . . 11 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑣Q)
17 simp1r 1006 . . . . . . . . . . . 12 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑤 <Q 1Q)
18 ltrelnq 7180 . . . . . . . . . . . . . 14 <Q ⊆ (Q × Q)
1918brel 4591 . . . . . . . . . . . . 13 (𝑤 <Q 1Q → (𝑤Q ∧ 1QQ))
2019simpld 111 . . . . . . . . . . . 12 (𝑤 <Q 1Q𝑤Q)
2117, 20syl 14 . . . . . . . . . . 11 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑤Q)
22 simp3 983 . . . . . . . . . . 11 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑣 <Q 𝑧)
23 simp2r 1008 . . . . . . . . . . 11 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))
24 simpr 109 . . . . . . . . . . . 12 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)))
25 ltrnqi 7236 . . . . . . . . . . . . . 14 (𝑣 <Q 𝑧 → (*Q𝑧) <Q (*Q𝑣))
26 ltmnqg 7216 . . . . . . . . . . . . . . . 16 ((𝑓Q𝑔QQ) → (𝑓 <Q 𝑔 ↔ ( ·Q 𝑓) <Q ( ·Q 𝑔)))
2726adantl 275 . . . . . . . . . . . . . . 15 ((((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) ∧ (𝑓Q𝑔QQ)) → (𝑓 <Q 𝑔 ↔ ( ·Q 𝑓) <Q ( ·Q 𝑔)))
28 simprl 520 . . . . . . . . . . . . . . . 16 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → 𝑣 <Q 𝑧)
2918brel 4591 . . . . . . . . . . . . . . . . 17 (𝑣 <Q 𝑧 → (𝑣Q𝑧Q))
3029simprd 113 . . . . . . . . . . . . . . . 16 (𝑣 <Q 𝑧𝑧Q)
31 recclnq 7207 . . . . . . . . . . . . . . . 16 (𝑧Q → (*Q𝑧) ∈ Q)
3228, 30, 313syl 17 . . . . . . . . . . . . . . 15 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (*Q𝑧) ∈ Q)
33 recclnq 7207 . . . . . . . . . . . . . . . 16 (𝑣Q → (*Q𝑣) ∈ Q)
3433ad2antrr 479 . . . . . . . . . . . . . . 15 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (*Q𝑣) ∈ Q)
35 simplr 519 . . . . . . . . . . . . . . 15 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → 𝑤Q)
36 mulcomnqg 7198 . . . . . . . . . . . . . . . 16 ((𝑓Q𝑔Q) → (𝑓 ·Q 𝑔) = (𝑔 ·Q 𝑓))
3736adantl 275 . . . . . . . . . . . . . . 15 ((((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) ∧ (𝑓Q𝑔Q)) → (𝑓 ·Q 𝑔) = (𝑔 ·Q 𝑓))
3827, 32, 34, 35, 37caovord2d 5940 . . . . . . . . . . . . . 14 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((*Q𝑧) <Q (*Q𝑣) ↔ ((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤)))
3925, 38syl5ib 153 . . . . . . . . . . . . 13 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (𝑣 <Q 𝑧 → ((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤)))
40 1nq 7181 . . . . . . . . . . . . . . . . . 18 1QQ
41 mulidnq 7204 . . . . . . . . . . . . . . . . . 18 (1QQ → (1Q ·Q 1Q) = 1Q)
4240, 41ax-mp 5 . . . . . . . . . . . . . . . . 17 (1Q ·Q 1Q) = 1Q
43 mulcomnqg 7198 . . . . . . . . . . . . . . . . . . . . . 22 ((𝑣Q ∧ (*Q𝑣) ∈ Q) → (𝑣 ·Q (*Q𝑣)) = ((*Q𝑣) ·Q 𝑣))
4433, 43mpdan 417 . . . . . . . . . . . . . . . . . . . . 21 (𝑣Q → (𝑣 ·Q (*Q𝑣)) = ((*Q𝑣) ·Q 𝑣))
45 recidnq 7208 . . . . . . . . . . . . . . . . . . . . 21 (𝑣Q → (𝑣 ·Q (*Q𝑣)) = 1Q)
4644, 45eqtr3d 2174 . . . . . . . . . . . . . . . . . . . 20 (𝑣Q → ((*Q𝑣) ·Q 𝑣) = 1Q)
47 recidnq 7208 . . . . . . . . . . . . . . . . . . . 20 (𝑤Q → (𝑤 ·Q (*Q𝑤)) = 1Q)
4846, 47oveqan12d 5793 . . . . . . . . . . . . . . . . . . 19 ((𝑣Q𝑤Q) → (((*Q𝑣) ·Q 𝑣) ·Q (𝑤 ·Q (*Q𝑤))) = (1Q ·Q 1Q))
4948adantr 274 . . . . . . . . . . . . . . . . . 18 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (((*Q𝑣) ·Q 𝑣) ·Q (𝑤 ·Q (*Q𝑤))) = (1Q ·Q 1Q))
50 simpll 518 . . . . . . . . . . . . . . . . . . 19 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → 𝑣Q)
51 mulassnqg 7199 . . . . . . . . . . . . . . . . . . . 20 ((𝑓Q𝑔QQ) → ((𝑓 ·Q 𝑔) ·Q ) = (𝑓 ·Q (𝑔 ·Q )))
5251adantl 275 . . . . . . . . . . . . . . . . . . 19 ((((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) ∧ (𝑓Q𝑔QQ)) → ((𝑓 ·Q 𝑔) ·Q ) = (𝑓 ·Q (𝑔 ·Q )))
53 recclnq 7207 . . . . . . . . . . . . . . . . . . . 20 (𝑤Q → (*Q𝑤) ∈ Q)
5435, 53syl 14 . . . . . . . . . . . . . . . . . . 19 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (*Q𝑤) ∈ Q)
55 mulclnq 7191 . . . . . . . . . . . . . . . . . . . 20 ((𝑓Q𝑔Q) → (𝑓 ·Q 𝑔) ∈ Q)
5655adantl 275 . . . . . . . . . . . . . . . . . . 19 ((((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) ∧ (𝑓Q𝑔Q)) → (𝑓 ·Q 𝑔) ∈ Q)
5734, 50, 35, 37, 52, 54, 56caov4d 5955 . . . . . . . . . . . . . . . . . 18 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (((*Q𝑣) ·Q 𝑣) ·Q (𝑤 ·Q (*Q𝑤))) = (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))))
5849, 57eqtr3d 2174 . . . . . . . . . . . . . . . . 17 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (1Q ·Q 1Q) = (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))))
5942, 58syl5reqr 2187 . . . . . . . . . . . . . . . 16 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))) = 1Q)
60 mulclnq 7191 . . . . . . . . . . . . . . . . . . 19 (((*Q𝑣) ∈ Q𝑤Q) → ((*Q𝑣) ·Q 𝑤) ∈ Q)
6133, 60sylan 281 . . . . . . . . . . . . . . . . . 18 ((𝑣Q𝑤Q) → ((*Q𝑣) ·Q 𝑤) ∈ Q)
62 mulclnq 7191 . . . . . . . . . . . . . . . . . . 19 ((𝑣Q ∧ (*Q𝑤) ∈ Q) → (𝑣 ·Q (*Q𝑤)) ∈ Q)
6353, 62sylan2 284 . . . . . . . . . . . . . . . . . 18 ((𝑣Q𝑤Q) → (𝑣 ·Q (*Q𝑤)) ∈ Q)
64 recmulnqg 7206 . . . . . . . . . . . . . . . . . 18 ((((*Q𝑣) ·Q 𝑤) ∈ Q ∧ (𝑣 ·Q (*Q𝑤)) ∈ Q) → ((*Q‘((*Q𝑣) ·Q 𝑤)) = (𝑣 ·Q (*Q𝑤)) ↔ (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))) = 1Q))
6561, 63, 64syl2anc 408 . . . . . . . . . . . . . . . . 17 ((𝑣Q𝑤Q) → ((*Q‘((*Q𝑣) ·Q 𝑤)) = (𝑣 ·Q (*Q𝑤)) ↔ (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))) = 1Q))
6665adantr 274 . . . . . . . . . . . . . . . 16 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((*Q‘((*Q𝑣) ·Q 𝑤)) = (𝑣 ·Q (*Q𝑤)) ↔ (((*Q𝑣) ·Q 𝑤) ·Q (𝑣 ·Q (*Q𝑤))) = 1Q))
6759, 66mpbird 166 . . . . . . . . . . . . . . 15 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (*Q‘((*Q𝑣) ·Q 𝑤)) = (𝑣 ·Q (*Q𝑤)))
6867eleq1d 2208 . . . . . . . . . . . . . 14 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴) ↔ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)))
6968biimprd 157 . . . . . . . . . . . . 13 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴) → (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)))
70 breq2 3933 . . . . . . . . . . . . . . . . . 18 (𝑦 = ((*Q𝑣) ·Q 𝑤) → (((*Q𝑧) ·Q 𝑤) <Q 𝑦 ↔ ((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤)))
71 fveq2 5421 . . . . . . . . . . . . . . . . . . 19 (𝑦 = ((*Q𝑣) ·Q 𝑤) → (*Q𝑦) = (*Q‘((*Q𝑣) ·Q 𝑤)))
7271eleq1d 2208 . . . . . . . . . . . . . . . . . 18 (𝑦 = ((*Q𝑣) ·Q 𝑤) → ((*Q𝑦) ∈ (2nd𝐴) ↔ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)))
7370, 72anbi12d 464 . . . . . . . . . . . . . . . . 17 (𝑦 = ((*Q𝑣) ·Q 𝑤) → ((((*Q𝑧) ·Q 𝑤) <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴)) ↔ (((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤) ∧ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴))))
7473spcegv 2774 . . . . . . . . . . . . . . . 16 (((*Q𝑣) ·Q 𝑤) ∈ Q → ((((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤) ∧ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)) → ∃𝑦(((*Q𝑧) ·Q 𝑤) <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴))))
7561, 74syl 14 . . . . . . . . . . . . . . 15 ((𝑣Q𝑤Q) → ((((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤) ∧ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)) → ∃𝑦(((*Q𝑧) ·Q 𝑤) <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴))))
76 recexpr.1 . . . . . . . . . . . . . . . 16 𝐵 = ⟨{𝑥 ∣ ∃𝑦(𝑥 <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴))}, {𝑥 ∣ ∃𝑦(𝑦 <Q 𝑥 ∧ (*Q𝑦) ∈ (1st𝐴))}⟩
7776recexprlemell 7437 . . . . . . . . . . . . . . 15 (((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵) ↔ ∃𝑦(((*Q𝑧) ·Q 𝑤) <Q 𝑦 ∧ (*Q𝑦) ∈ (2nd𝐴)))
7875, 77syl6ibr 161 . . . . . . . . . . . . . 14 ((𝑣Q𝑤Q) → ((((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤) ∧ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)) → ((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵)))
7978adantr 274 . . . . . . . . . . . . 13 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((((*Q𝑧) ·Q 𝑤) <Q ((*Q𝑣) ·Q 𝑤) ∧ (*Q‘((*Q𝑣) ·Q 𝑤)) ∈ (2nd𝐴)) → ((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵)))
8039, 69, 79syl2and 293 . . . . . . . . . . . 12 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) → ((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵)))
8124, 80mpd 13 . . . . . . . . . . 11 (((𝑣Q𝑤Q) ∧ (𝑣 <Q 𝑧 ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → ((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵))
8216, 21, 22, 23, 81syl22anc 1217 . . . . . . . . . 10 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → ((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵))
83303ad2ant3 1004 . . . . . . . . . . 11 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑧Q)
84 mulidnq 7204 . . . . . . . . . . . . . 14 (𝑤Q → (𝑤 ·Q 1Q) = 𝑤)
85 mulcomnqg 7198 . . . . . . . . . . . . . . 15 ((𝑤Q ∧ 1QQ) → (𝑤 ·Q 1Q) = (1Q ·Q 𝑤))
8640, 85mpan2 421 . . . . . . . . . . . . . 14 (𝑤Q → (𝑤 ·Q 1Q) = (1Q ·Q 𝑤))
8784, 86eqtr3d 2174 . . . . . . . . . . . . 13 (𝑤Q𝑤 = (1Q ·Q 𝑤))
8887adantl 275 . . . . . . . . . . . 12 ((𝑧Q𝑤Q) → 𝑤 = (1Q ·Q 𝑤))
89 recidnq 7208 . . . . . . . . . . . . . 14 (𝑧Q → (𝑧 ·Q (*Q𝑧)) = 1Q)
9089oveq1d 5789 . . . . . . . . . . . . 13 (𝑧Q → ((𝑧 ·Q (*Q𝑧)) ·Q 𝑤) = (1Q ·Q 𝑤))
9190adantr 274 . . . . . . . . . . . 12 ((𝑧Q𝑤Q) → ((𝑧 ·Q (*Q𝑧)) ·Q 𝑤) = (1Q ·Q 𝑤))
92 mulassnqg 7199 . . . . . . . . . . . . . 14 ((𝑧Q ∧ (*Q𝑧) ∈ Q𝑤Q) → ((𝑧 ·Q (*Q𝑧)) ·Q 𝑤) = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
9331, 92syl3an2 1250 . . . . . . . . . . . . 13 ((𝑧Q𝑧Q𝑤Q) → ((𝑧 ·Q (*Q𝑧)) ·Q 𝑤) = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
94933anidm12 1273 . . . . . . . . . . . 12 ((𝑧Q𝑤Q) → ((𝑧 ·Q (*Q𝑧)) ·Q 𝑤) = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
9588, 91, 943eqtr2d 2178 . . . . . . . . . . 11 ((𝑧Q𝑤Q) → 𝑤 = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
9683, 21, 95syl2anc 408 . . . . . . . . . 10 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → 𝑤 = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
97 oveq2 5782 . . . . . . . . . . . 12 (𝑥 = ((*Q𝑧) ·Q 𝑤) → (𝑧 ·Q 𝑥) = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤)))
9897eqeq2d 2151 . . . . . . . . . . 11 (𝑥 = ((*Q𝑧) ·Q 𝑤) → (𝑤 = (𝑧 ·Q 𝑥) ↔ 𝑤 = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤))))
9998rspcev 2789 . . . . . . . . . 10 ((((*Q𝑧) ·Q 𝑤) ∈ (1st𝐵) ∧ 𝑤 = (𝑧 ·Q ((*Q𝑧) ·Q 𝑤))) → ∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥))
10082, 96, 99syl2anc 408 . . . . . . . . 9 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴)) ∧ 𝑣 <Q 𝑧) → ∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥))
1011003expia 1183 . . . . . . . 8 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (𝑣 <Q 𝑧 → ∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥)))
102101reximdv 2533 . . . . . . 7 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (∃𝑧 ∈ (1st𝐴)𝑣 <Q 𝑧 → ∃𝑧 ∈ (1st𝐴)∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥)))
10376recexprlempr 7447 . . . . . . . . 9 (𝐴P𝐵P)
104 df-imp 7284 . . . . . . . . . 10 ·P = (𝑦P, 𝑤P ↦ ⟨{𝑢Q ∣ ∃𝑓Q𝑔Q (𝑓 ∈ (1st𝑦) ∧ 𝑔 ∈ (1st𝑤) ∧ 𝑢 = (𝑓 ·Q 𝑔))}, {𝑢Q ∣ ∃𝑓Q𝑔Q (𝑓 ∈ (2nd𝑦) ∧ 𝑔 ∈ (2nd𝑤) ∧ 𝑢 = (𝑓 ·Q 𝑔))}⟩)
105104, 55genpelvl 7327 . . . . . . . . 9 ((𝐴P𝐵P) → (𝑤 ∈ (1st ‘(𝐴 ·P 𝐵)) ↔ ∃𝑧 ∈ (1st𝐴)∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥)))
106103, 105mpdan 417 . . . . . . . 8 (𝐴P → (𝑤 ∈ (1st ‘(𝐴 ·P 𝐵)) ↔ ∃𝑧 ∈ (1st𝐴)∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥)))
107106ad2antrr 479 . . . . . . 7 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (𝑤 ∈ (1st ‘(𝐴 ·P 𝐵)) ↔ ∃𝑧 ∈ (1st𝐴)∃𝑥 ∈ (1st𝐵)𝑤 = (𝑧 ·Q 𝑥)))
108102, 107sylibrd 168 . . . . . 6 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → (∃𝑧 ∈ (1st𝐴)𝑣 <Q 𝑧𝑤 ∈ (1st ‘(𝐴 ·P 𝐵))))
10912, 108mpd 13 . . . . 5 (((𝐴P𝑤 <Q 1Q) ∧ (𝑣 ∈ (1st𝐴) ∧ (𝑣 ·Q (*Q𝑤)) ∈ (2nd𝐴))) → 𝑤 ∈ (1st ‘(𝐴 ·P 𝐵)))
1109, 109rexlimddv 2554 . . . 4 ((𝐴P𝑤 <Q 1Q) → 𝑤 ∈ (1st ‘(𝐴 ·P 𝐵)))
111110ex 114 . . 3 (𝐴P → (𝑤 <Q 1Q𝑤 ∈ (1st ‘(𝐴 ·P 𝐵))))
1122, 111syl5bi 151 . 2 (𝐴P → (𝑤 ∈ (1st ‘1P) → 𝑤 ∈ (1st ‘(𝐴 ·P 𝐵))))
113112ssrdv 3103 1 (𝐴P → (1st ‘1P) ⊆ (1st ‘(𝐴 ·P 𝐵)))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wb 104  w3a 962   = wceq 1331  wex 1468  wcel 1480  {cab 2125  wrex 2417  wss 3071  cop 3530   class class class wbr 3929  cfv 5123  (class class class)co 5774  1st c1st 6036  2nd c2nd 6037  Qcnq 7095  1Qc1q 7096   ·Q cmq 7098  *Qcrq 7099   <Q cltq 7100  Pcnp 7106  1Pc1p 7107   ·P cmp 7109
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-coll 4043  ax-sep 4046  ax-nul 4054  ax-pow 4098  ax-pr 4131  ax-un 4355  ax-setind 4452  ax-iinf 4502
This theorem depends on definitions:  df-bi 116  df-dc 820  df-3or 963  df-3an 964  df-tru 1334  df-fal 1337  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ne 2309  df-ral 2421  df-rex 2422  df-reu 2423  df-rab 2425  df-v 2688  df-sbc 2910  df-csb 3004  df-dif 3073  df-un 3075  df-in 3077  df-ss 3084  df-nul 3364  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-int 3772  df-iun 3815  df-br 3930  df-opab 3990  df-mpt 3991  df-tr 4027  df-eprel 4211  df-id 4215  df-po 4218  df-iso 4219  df-iord 4288  df-on 4290  df-suc 4293  df-iom 4505  df-xp 4545  df-rel 4546  df-cnv 4547  df-co 4548  df-dm 4549  df-rn 4550  df-res 4551  df-ima 4552  df-iota 5088  df-fun 5125  df-fn 5126  df-f 5127  df-f1 5128  df-fo 5129  df-f1o 5130  df-fv 5131  df-ov 5777  df-oprab 5778  df-mpo 5779  df-1st 6038  df-2nd 6039  df-recs 6202  df-irdg 6267  df-1o 6313  df-2o 6314  df-oadd 6317  df-omul 6318  df-er 6429  df-ec 6431  df-qs 6435  df-ni 7119  df-pli 7120  df-mi 7121  df-lti 7122  df-plpq 7159  df-mpq 7160  df-enq 7162  df-nqqs 7163  df-plqqs 7164  df-mqqs 7165  df-1nqqs 7166  df-rq 7167  df-ltnqqs 7168  df-enq0 7239  df-nq0 7240  df-0nq0 7241  df-plq0 7242  df-mq0 7243  df-inp 7281  df-i1p 7282  df-imp 7284
This theorem is referenced by:  recexprlemex  7452
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