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Theorem mulgt0sr 7598
Description: The product of two positive signed reals is positive. (Contributed by NM, 13-May-1996.)
Assertion
Ref Expression
mulgt0sr ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵))

Proof of Theorem mulgt0sr
Dummy variables 𝑥 𝑦 𝑧 𝑤 𝑣 𝑢 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ltrelsr 7558 . . . . 5 <R ⊆ (R × R)
21brel 4591 . . . 4 (0R <R 𝐴 → (0RR𝐴R))
32simprd 113 . . 3 (0R <R 𝐴𝐴R)
41brel 4591 . . . 4 (0R <R 𝐵 → (0RR𝐵R))
54simprd 113 . . 3 (0R <R 𝐵𝐵R)
63, 5anim12i 336 . 2 ((0R <R 𝐴 ∧ 0R <R 𝐵) → (𝐴R𝐵R))
7 df-nr 7547 . . 3 R = ((P × P) / ~R )
8 breq2 3933 . . . . 5 ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → (0R <R [⟨𝑥, 𝑦⟩] ~R ↔ 0R <R 𝐴))
98anbi1d 460 . . . 4 ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → ((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) ↔ (0R <R 𝐴 ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R )))
10 oveq1 5781 . . . . 5 ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) = (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ))
1110breq2d 3941 . . . 4 ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → (0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ 0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R )))
129, 11imbi12d 233 . . 3 ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → (((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) → 0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R )) ↔ ((0R <R 𝐴 ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) → 0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ))))
13 breq2 3933 . . . . 5 ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (0R <R [⟨𝑧, 𝑤⟩] ~R ↔ 0R <R 𝐵))
1413anbi2d 459 . . . 4 ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → ((0R <R 𝐴 ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) ↔ (0R <R 𝐴 ∧ 0R <R 𝐵)))
15 oveq2 5782 . . . . 5 ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ) = (𝐴 ·R 𝐵))
1615breq2d 3941 . . . 4 ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ 0R <R (𝐴 ·R 𝐵)))
1714, 16imbi12d 233 . . 3 ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (((0R <R 𝐴 ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) → 0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R )) ↔ ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵))))
18 gt0srpr 7568 . . . . 5 (0R <R [⟨𝑥, 𝑦⟩] ~R𝑦<P 𝑥)
19 gt0srpr 7568 . . . . 5 (0R <R [⟨𝑧, 𝑤⟩] ~R𝑤<P 𝑧)
2018, 19anbi12i 455 . . . 4 ((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) ↔ (𝑦<P 𝑥𝑤<P 𝑧))
21 ltexpri 7433 . . . . . . 7 (𝑦<P 𝑥 → ∃𝑣P (𝑦 +P 𝑣) = 𝑥)
22 ltexpri 7433 . . . . . . . . 9 (𝑤<P 𝑧 → ∃𝑢P (𝑤 +P 𝑢) = 𝑧)
23 addclpr 7357 . . . . . . . . . . . . . 14 ((𝑓P𝑔P) → (𝑓 +P 𝑔) ∈ P)
2423adantl 275 . . . . . . . . . . . . 13 ((((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓P𝑔P)) → (𝑓 +P 𝑔) ∈ P)
25 simplrr 525 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 +P 𝑣) = 𝑥)
26 simplr 519 . . . . . . . . . . . . . . . . 17 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → 𝑦P)
2726ad2antrr 479 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑦P)
28 simplrl 524 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑣P)
2924, 27, 28caovcld 5924 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 +P 𝑣) ∈ P)
3025, 29eqeltrrd 2217 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑥P)
31 simplrr 525 . . . . . . . . . . . . . . 15 ((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) → 𝑤P)
3231adantr 274 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑤P)
33 mulclpr 7392 . . . . . . . . . . . . . 14 ((𝑥P𝑤P) → (𝑥 ·P 𝑤) ∈ P)
3430, 32, 33syl2anc 408 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑥 ·P 𝑤) ∈ P)
35 simplrl 524 . . . . . . . . . . . . . . 15 ((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) → 𝑧P)
3635adantr 274 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑧P)
37 mulclpr 7392 . . . . . . . . . . . . . 14 ((𝑦P𝑧P) → (𝑦 ·P 𝑧) ∈ P)
3827, 36, 37syl2anc 408 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑧) ∈ P)
3924, 34, 38caovcld 5924 . . . . . . . . . . . 12 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) ∈ P)
40 simprl 520 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑢P)
41 mulclpr 7392 . . . . . . . . . . . . 13 ((𝑣P𝑢P) → (𝑣 ·P 𝑢) ∈ P)
4228, 40, 41syl2anc 408 . . . . . . . . . . . 12 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑣 ·P 𝑢) ∈ P)
43 ltaddpr 7417 . . . . . . . . . . . 12 ((((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) ∈ P ∧ (𝑣 ·P 𝑢) ∈ P) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)))
4439, 42, 43syl2anc 408 . . . . . . . . . . 11 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)))
45 simprr 521 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑤 +P 𝑢) = 𝑧)
46 oveq12 5783 . . . . . . . . . . . . . . . 16 (((𝑦 +P 𝑣) = 𝑥 ∧ (𝑤 +P 𝑢) = 𝑧) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (𝑥 ·P 𝑧))
4746oveq1d 5789 . . . . . . . . . . . . . . 15 (((𝑦 +P 𝑣) = 𝑥 ∧ (𝑤 +P 𝑢) = 𝑧) → (((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))) = ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))))
4825, 45, 47syl2anc 408 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))) = ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))))
49 distrprg 7408 . . . . . . . . . . . . . . . . . . 19 ((𝑦P𝑤P𝑢P) → (𝑦 ·P (𝑤 +P 𝑢)) = ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)))
5027, 32, 40, 49syl3anc 1216 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P (𝑤 +P 𝑢)) = ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)))
51 oveq2 5782 . . . . . . . . . . . . . . . . . . . 20 ((𝑤 +P 𝑢) = 𝑧 → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
5251adantl 275 . . . . . . . . . . . . . . . . . . 19 ((𝑢P ∧ (𝑤 +P 𝑢) = 𝑧) → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
5352adantl 275 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
5450, 53eqtr3d 2174 . . . . . . . . . . . . . . . . 17 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)) = (𝑦 ·P 𝑧))
5554oveq1d 5789 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)) +P ((𝑣 ·P 𝑤) +P (𝑣 ·P 𝑢))) = ((𝑦 ·P 𝑧) +P ((𝑣 ·P 𝑤) +P (𝑣 ·P 𝑢))))
56 distrprg 7408 . . . . . . . . . . . . . . . . . . . 20 ((𝑓P𝑔PP) → (𝑓 ·P (𝑔 +P )) = ((𝑓 ·P 𝑔) +P (𝑓 ·P )))
5756adantl 275 . . . . . . . . . . . . . . . . . . 19 ((((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓P𝑔PP)) → (𝑓 ·P (𝑔 +P )) = ((𝑓 ·P 𝑔) +P (𝑓 ·P )))
58 mulcomprg 7400 . . . . . . . . . . . . . . . . . . . 20 ((𝑓P𝑔P) → (𝑓 ·P 𝑔) = (𝑔 ·P 𝑓))
5958adantl 275 . . . . . . . . . . . . . . . . . . 19 ((((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓P𝑔P)) → (𝑓 ·P 𝑔) = (𝑔 ·P 𝑓))
6057, 27, 28, 32, 24, 59caovdir2d 5947 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑤) = ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)))
6157, 27, 28, 40, 24, 59caovdir2d 5947 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑢) = ((𝑦 ·P 𝑢) +P (𝑣 ·P 𝑢)))
6260, 61oveq12d 5792 . . . . . . . . . . . . . . . . 17 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑦 +P 𝑣) ·P 𝑤) +P ((𝑦 +P 𝑣) ·P 𝑢)) = (((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)) +P ((𝑦 ·P 𝑢) +P (𝑣 ·P 𝑢))))
63 distrprg 7408 . . . . . . . . . . . . . . . . . 18 (((𝑦 +P 𝑣) ∈ P𝑤P𝑢P) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (((𝑦 +P 𝑣) ·P 𝑤) +P ((𝑦 +P 𝑣) ·P 𝑢)))
6429, 32, 40, 63syl3anc 1216 . . . . . . . . . . . . . . . . 17 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (((𝑦 +P 𝑣) ·P 𝑤) +P ((𝑦 +P 𝑣) ·P 𝑢)))
65 mulclpr 7392 . . . . . . . . . . . . . . . . . . 19 ((𝑦P𝑤P) → (𝑦 ·P 𝑤) ∈ P)
6627, 32, 65syl2anc 408 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑤) ∈ P)
67 mulclpr 7392 . . . . . . . . . . . . . . . . . . 19 ((𝑦P𝑢P) → (𝑦 ·P 𝑢) ∈ P)
6827, 40, 67syl2anc 408 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑢) ∈ P)
69 mulclpr 7392 . . . . . . . . . . . . . . . . . . 19 ((𝑣P𝑤P) → (𝑣 ·P 𝑤) ∈ P)
7028, 32, 69syl2anc 408 . . . . . . . . . . . . . . . . . 18 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑣 ·P 𝑤) ∈ P)
71 addcomprg 7398 . . . . . . . . . . . . . . . . . . 19 ((𝑓P𝑔P) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
7271adantl 275 . . . . . . . . . . . . . . . . . 18 ((((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓P𝑔P)) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
73 addassprg 7399 . . . . . . . . . . . . . . . . . . 19 ((𝑓P𝑔PP) → ((𝑓 +P 𝑔) +P ) = (𝑓 +P (𝑔 +P )))
7473adantl 275 . . . . . . . . . . . . . . . . . 18 ((((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓P𝑔PP)) → ((𝑓 +P 𝑔) +P ) = (𝑓 +P (𝑔 +P )))
7566, 68, 70, 72, 74, 42, 24caov4d 5955 . . . . . . . . . . . . . . . . 17 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)) +P ((𝑣 ·P 𝑤) +P (𝑣 ·P 𝑢))) = (((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)) +P ((𝑦 ·P 𝑢) +P (𝑣 ·P 𝑢))))
7662, 64, 753eqtr4d 2182 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)) +P ((𝑣 ·P 𝑤) +P (𝑣 ·P 𝑢))))
7770, 38, 42, 72, 74caov12d 5952 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) = ((𝑦 ·P 𝑧) +P ((𝑣 ·P 𝑤) +P (𝑣 ·P 𝑢))))
7855, 76, 773eqtr4d 2182 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = ((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))))
79 oveq1 5781 . . . . . . . . . . . . . . . . . 18 ((𝑦 +P 𝑣) = 𝑥 → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
8079adantl 275 . . . . . . . . . . . . . . . . 17 ((𝑣P ∧ (𝑦 +P 𝑣) = 𝑥) → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
8180ad2antlr 480 . . . . . . . . . . . . . . . 16 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
8260, 81eqtr3d 2174 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)) = (𝑥 ·P 𝑤))
8378, 82oveq12d 5792 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))) = (((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) +P (𝑥 ·P 𝑤)))
8448, 83eqtr3d 2174 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))) = (((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) +P (𝑥 ·P 𝑤)))
85 mulclpr 7392 . . . . . . . . . . . . . . . 16 ((𝑥P𝑧P) → (𝑥 ·P 𝑧) ∈ P)
8630, 36, 85syl2anc 408 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑥 ·P 𝑧) ∈ P)
87 addassprg 7399 . . . . . . . . . . . . . . 15 (((𝑥 ·P 𝑧) ∈ P ∧ (𝑦 ·P 𝑤) ∈ P ∧ (𝑣 ·P 𝑤) ∈ P) → (((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) +P (𝑣 ·P 𝑤)) = ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))))
8886, 66, 70, 87syl3anc 1216 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) +P (𝑣 ·P 𝑤)) = ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))))
89 addclpr 7357 . . . . . . . . . . . . . . . 16 (((𝑥 ·P 𝑧) ∈ P ∧ (𝑦 ·P 𝑤) ∈ P) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P)
9086, 66, 89syl2anc 408 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P)
91 addcomprg 7398 . . . . . . . . . . . . . . 15 ((((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P ∧ (𝑣 ·P 𝑤) ∈ P) → (((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) +P (𝑣 ·P 𝑤)) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
9290, 70, 91syl2anc 408 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) +P (𝑣 ·P 𝑤)) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
9388, 92eqtr3d 2174 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤))) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
9424, 38, 42caovcld 5924 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)) ∈ P)
95 addassprg 7399 . . . . . . . . . . . . . . 15 (((𝑣 ·P 𝑤) ∈ P ∧ (𝑥 ·P 𝑤) ∈ P ∧ ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)) ∈ P) → (((𝑣 ·P 𝑤) +P (𝑥 ·P 𝑤)) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)))))
9670, 34, 94, 95syl3anc 1216 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑣 ·P 𝑤) +P (𝑥 ·P 𝑤)) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)))))
9770, 94, 34, 72, 74caov32d 5951 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) +P (𝑥 ·P 𝑤)) = (((𝑣 ·P 𝑤) +P (𝑥 ·P 𝑤)) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))))
98 addassprg 7399 . . . . . . . . . . . . . . . 16 (((𝑥 ·P 𝑤) ∈ P ∧ (𝑦 ·P 𝑧) ∈ P ∧ (𝑣 ·P 𝑢) ∈ P) → (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)) = ((𝑥 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))))
9934, 38, 42, 98syl3anc 1216 . . . . . . . . . . . . . . 15 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)) = ((𝑥 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))))
10099oveq2d 5790 . . . . . . . . . . . . . 14 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑣 ·P 𝑤) +P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))) = ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)))))
10196, 97, 1003eqtr4d 2182 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))) +P (𝑥 ·P 𝑤)) = ((𝑣 ·P 𝑤) +P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))))
10284, 93, 1013eqtr3d 2180 . . . . . . . . . . . 12 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))) = ((𝑣 ·P 𝑤) +P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))))
10324, 39, 42caovcld 5924 . . . . . . . . . . . . 13 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)) ∈ P)
104 addcanprg 7436 . . . . . . . . . . . . 13 (((𝑣 ·P 𝑤) ∈ P ∧ ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P ∧ (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)) ∈ P) → (((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))) = ((𝑣 ·P 𝑤) +P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) = (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))))
10570, 90, 103, 104syl3anc 1216 . . . . . . . . . . . 12 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑣 ·P 𝑤) +P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))) = ((𝑣 ·P 𝑤) +P (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) = (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢))))
106102, 105mpd 13 . . . . . . . . . . 11 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) = (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)))
10744, 106breqtrrd 3956 . . . . . . . . . 10 (((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))
108107rexlimdvaa 2550 . . . . . . . . 9 ((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) → (∃𝑢P (𝑤 +P 𝑢) = 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
10922, 108syl5 32 . . . . . . . 8 ((((𝑥P𝑦P) ∧ (𝑧P𝑤P)) ∧ (𝑣P ∧ (𝑦 +P 𝑣) = 𝑥)) → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
110109rexlimdvaa 2550 . . . . . . 7 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → (∃𝑣P (𝑦 +P 𝑣) = 𝑥 → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))))
11121, 110syl5 32 . . . . . 6 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → (𝑦<P 𝑥 → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))))
112111impd 252 . . . . 5 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → ((𝑦<P 𝑥𝑤<P 𝑧) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
113 mulsrpr 7566 . . . . . . 7 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) = [⟨((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)), ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))⟩] ~R )
114113breq2d 3941 . . . . . 6 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → (0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ 0R <R [⟨((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)), ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))⟩] ~R ))
115 gt0srpr 7568 . . . . . 6 (0R <R [⟨((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)), ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))⟩] ~R ↔ ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))
116114, 115syl6bb 195 . . . . 5 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → (0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
117112, 116sylibrd 168 . . . 4 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → ((𝑦<P 𝑥𝑤<P 𝑧) → 0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R )))
11820, 117syl5bi 151 . . 3 (((𝑥P𝑦P) ∧ (𝑧P𝑤P)) → ((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) → 0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R )))
1197, 12, 17, 1182ecoptocl 6517 . 2 ((𝐴R𝐵R) → ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵)))
1206, 119mpcom 36 1 ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  w3a 962   = wceq 1331  wcel 1480  wrex 2417  cop 3530   class class class wbr 3929  (class class class)co 5774  [cec 6427  Pcnp 7111   +P cpp 7113   ·P cmp 7114  <P cltp 7115   ~R cer 7116  Rcnr 7117  0Rc0r 7118   ·R cmr 7122   <R cltr 7123
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 7124  df-pli 7125  df-mi 7126  df-lti 7127  df-plpq 7164  df-mpq 7165  df-enq 7167  df-nqqs 7168  df-plqqs 7169  df-mqqs 7170  df-1nqqs 7171  df-rq 7172  df-ltnqqs 7173  df-enq0 7244  df-nq0 7245  df-0nq0 7246  df-plq0 7247  df-mq0 7248  df-inp 7286  df-i1p 7287  df-iplp 7288  df-imp 7289  df-iltp 7290  df-enr 7546  df-nr 7547  df-mr 7549  df-ltr 7550  df-0r 7551
This theorem is referenced by:  axpre-mulgt0  7707
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