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Theorem map2psrpr 10123
 Description: Equivalence for positive signed real. (Contributed by NM, 17-May-1996.) (Revised by Mario Carneiro, 15-Jun-2013.) (New usage is discouraged.)
Hypothesis
Ref Expression
map2psrpr.2 𝐶R
Assertion
Ref Expression
map2psrpr ((𝐶 +R -1R) <R 𝐴 ↔ ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴)
Distinct variable groups:   𝑥,𝐴   𝑥,𝐶

Proof of Theorem map2psrpr
Dummy variables 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ltrelsr 10081 . . . . 5 <R ⊆ (R × R)
21brel 5325 . . . 4 ((𝐶 +R -1R) <R 𝐴 → ((𝐶 +R -1R) ∈ R𝐴R))
32simprd 482 . . 3 ((𝐶 +R -1R) <R 𝐴𝐴R)
4 map2psrpr.2 . . . . . 6 𝐶R
5 ltasr 10113 . . . . . 6 (𝐶R → (-1R <R ((𝐶 ·R -1R) +R 𝐴) ↔ (𝐶 +R -1R) <R (𝐶 +R ((𝐶 ·R -1R) +R 𝐴))))
64, 5ax-mp 5 . . . . 5 (-1R <R ((𝐶 ·R -1R) +R 𝐴) ↔ (𝐶 +R -1R) <R (𝐶 +R ((𝐶 ·R -1R) +R 𝐴)))
7 pn0sr 10114 . . . . . . . . . 10 (𝐶R → (𝐶 +R (𝐶 ·R -1R)) = 0R)
84, 7ax-mp 5 . . . . . . . . 9 (𝐶 +R (𝐶 ·R -1R)) = 0R
98oveq1i 6823 . . . . . . . 8 ((𝐶 +R (𝐶 ·R -1R)) +R 𝐴) = (0R +R 𝐴)
10 addasssr 10101 . . . . . . . 8 ((𝐶 +R (𝐶 ·R -1R)) +R 𝐴) = (𝐶 +R ((𝐶 ·R -1R) +R 𝐴))
11 addcomsr 10100 . . . . . . . 8 (0R +R 𝐴) = (𝐴 +R 0R)
129, 10, 113eqtr3i 2790 . . . . . . 7 (𝐶 +R ((𝐶 ·R -1R) +R 𝐴)) = (𝐴 +R 0R)
13 0idsr 10110 . . . . . . 7 (𝐴R → (𝐴 +R 0R) = 𝐴)
1412, 13syl5eq 2806 . . . . . 6 (𝐴R → (𝐶 +R ((𝐶 ·R -1R) +R 𝐴)) = 𝐴)
1514breq2d 4816 . . . . 5 (𝐴R → ((𝐶 +R -1R) <R (𝐶 +R ((𝐶 ·R -1R) +R 𝐴)) ↔ (𝐶 +R -1R) <R 𝐴))
166, 15syl5bb 272 . . . 4 (𝐴R → (-1R <R ((𝐶 ·R -1R) +R 𝐴) ↔ (𝐶 +R -1R) <R 𝐴))
17 m1r 10095 . . . . . . . 8 -1RR
18 mulclsr 10097 . . . . . . . 8 ((𝐶R ∧ -1RR) → (𝐶 ·R -1R) ∈ R)
194, 17, 18mp2an 710 . . . . . . 7 (𝐶 ·R -1R) ∈ R
20 addclsr 10096 . . . . . . 7 (((𝐶 ·R -1R) ∈ R𝐴R) → ((𝐶 ·R -1R) +R 𝐴) ∈ R)
2119, 20mpan 708 . . . . . 6 (𝐴R → ((𝐶 ·R -1R) +R 𝐴) ∈ R)
22 df-nr 10070 . . . . . . 7 R = ((P × P) / ~R )
23 breq2 4808 . . . . . . . 8 ([⟨𝑦, 𝑧⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → (-1R <R [⟨𝑦, 𝑧⟩] ~R ↔ -1R <R ((𝐶 ·R -1R) +R 𝐴)))
24 eqeq2 2771 . . . . . . . . 9 ([⟨𝑦, 𝑧⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → ([⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴)))
2524rexbidv 3190 . . . . . . . 8 ([⟨𝑦, 𝑧⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → (∃𝑥P [⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ ∃𝑥P [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴)))
2623, 25imbi12d 333 . . . . . . 7 ([⟨𝑦, 𝑧⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → ((-1R <R [⟨𝑦, 𝑧⟩] ~R → ∃𝑥P [⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ) ↔ (-1R <R ((𝐶 ·R -1R) +R 𝐴) → ∃𝑥P [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴))))
27 df-m1r 10076 . . . . . . . . . . 11 -1R = [⟨1P, (1P +P 1P)⟩] ~R
2827breq1i 4811 . . . . . . . . . 10 (-1R <R [⟨𝑦, 𝑧⟩] ~R ↔ [⟨1P, (1P +P 1P)⟩] ~R <R [⟨𝑦, 𝑧⟩] ~R )
29 addasspr 10036 . . . . . . . . . . . 12 ((1P +P 1P) +P 𝑦) = (1P +P (1P +P 𝑦))
3029breq2i 4812 . . . . . . . . . . 11 ((1P +P 𝑧)<P ((1P +P 1P) +P 𝑦) ↔ (1P +P 𝑧)<P (1P +P (1P +P 𝑦)))
31 ltsrpr 10090 . . . . . . . . . . 11 ([⟨1P, (1P +P 1P)⟩] ~R <R [⟨𝑦, 𝑧⟩] ~R ↔ (1P +P 𝑧)<P ((1P +P 1P) +P 𝑦))
32 1pr 10029 . . . . . . . . . . . 12 1PP
33 ltapr 10059 . . . . . . . . . . . 12 (1PP → (𝑧<P (1P +P 𝑦) ↔ (1P +P 𝑧)<P (1P +P (1P +P 𝑦))))
3432, 33ax-mp 5 . . . . . . . . . . 11 (𝑧<P (1P +P 𝑦) ↔ (1P +P 𝑧)<P (1P +P (1P +P 𝑦)))
3530, 31, 343bitr4i 292 . . . . . . . . . 10 ([⟨1P, (1P +P 1P)⟩] ~R <R [⟨𝑦, 𝑧⟩] ~R𝑧<P (1P +P 𝑦))
3628, 35bitri 264 . . . . . . . . 9 (-1R <R [⟨𝑦, 𝑧⟩] ~R𝑧<P (1P +P 𝑦))
37 ltexpri 10057 . . . . . . . . 9 (𝑧<P (1P +P 𝑦) → ∃𝑥P (𝑧 +P 𝑥) = (1P +P 𝑦))
3836, 37sylbi 207 . . . . . . . 8 (-1R <R [⟨𝑦, 𝑧⟩] ~R → ∃𝑥P (𝑧 +P 𝑥) = (1P +P 𝑦))
39 enreceq 10079 . . . . . . . . . . . 12 (((𝑥P ∧ 1PP) ∧ (𝑦P𝑧P)) → ([⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ (𝑥 +P 𝑧) = (1P +P 𝑦)))
4032, 39mpanl2 719 . . . . . . . . . . 11 ((𝑥P ∧ (𝑦P𝑧P)) → ([⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ (𝑥 +P 𝑧) = (1P +P 𝑦)))
41 addcompr 10035 . . . . . . . . . . . 12 (𝑧 +P 𝑥) = (𝑥 +P 𝑧)
4241eqeq1i 2765 . . . . . . . . . . 11 ((𝑧 +P 𝑥) = (1P +P 𝑦) ↔ (𝑥 +P 𝑧) = (1P +P 𝑦))
4340, 42syl6bbr 278 . . . . . . . . . 10 ((𝑥P ∧ (𝑦P𝑧P)) → ([⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ (𝑧 +P 𝑥) = (1P +P 𝑦)))
4443ancoms 468 . . . . . . . . 9 (((𝑦P𝑧P) ∧ 𝑥P) → ([⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ (𝑧 +P 𝑥) = (1P +P 𝑦)))
4544rexbidva 3187 . . . . . . . 8 ((𝑦P𝑧P) → (∃𝑥P [⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ↔ ∃𝑥P (𝑧 +P 𝑥) = (1P +P 𝑦)))
4638, 45syl5ibr 236 . . . . . . 7 ((𝑦P𝑧P) → (-1R <R [⟨𝑦, 𝑧⟩] ~R → ∃𝑥P [⟨𝑥, 1P⟩] ~R = [⟨𝑦, 𝑧⟩] ~R ))
4722, 26, 46ecoptocl 8004 . . . . . 6 (((𝐶 ·R -1R) +R 𝐴) ∈ R → (-1R <R ((𝐶 ·R -1R) +R 𝐴) → ∃𝑥P [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴)))
4821, 47syl 17 . . . . 5 (𝐴R → (-1R <R ((𝐶 ·R -1R) +R 𝐴) → ∃𝑥P [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴)))
49 oveq2 6821 . . . . . . . 8 ([⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = (𝐶 +R ((𝐶 ·R -1R) +R 𝐴)))
5049, 14sylan9eqr 2816 . . . . . . 7 ((𝐴R ∧ [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴)) → (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴)
5150ex 449 . . . . . 6 (𝐴R → ([⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴))
5251reximdv 3154 . . . . 5 (𝐴R → (∃𝑥P [⟨𝑥, 1P⟩] ~R = ((𝐶 ·R -1R) +R 𝐴) → ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴))
5348, 52syld 47 . . . 4 (𝐴R → (-1R <R ((𝐶 ·R -1R) +R 𝐴) → ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴))
5416, 53sylbird 250 . . 3 (𝐴R → ((𝐶 +R -1R) <R 𝐴 → ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴))
553, 54mpcom 38 . 2 ((𝐶 +R -1R) <R 𝐴 → ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴)
564mappsrpr 10121 . . . . 5 ((𝐶 +R -1R) <R (𝐶 +R [⟨𝑥, 1P⟩] ~R ) ↔ 𝑥P)
57 breq2 4808 . . . . 5 ((𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴 → ((𝐶 +R -1R) <R (𝐶 +R [⟨𝑥, 1P⟩] ~R ) ↔ (𝐶 +R -1R) <R 𝐴))
5856, 57syl5bbr 274 . . . 4 ((𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴 → (𝑥P ↔ (𝐶 +R -1R) <R 𝐴))
5958biimpac 504 . . 3 ((𝑥P ∧ (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴) → (𝐶 +R -1R) <R 𝐴)
6059rexlimiva 3166 . 2 (∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴 → (𝐶 +R -1R) <R 𝐴)
6155, 60impbii 199 1 ((𝐶 +R -1R) <R 𝐴 ↔ ∃𝑥P (𝐶 +R [⟨𝑥, 1P⟩] ~R ) = 𝐴)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 383   = wceq 1632   ∈ wcel 2139  ∃wrex 3051  ⟨cop 4327   class class class wbr 4804  (class class class)co 6813  [cec 7909  Pcnp 9873  1Pc1p 9874   +P cpp 9875
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