Theorem mulgt0sr 7791

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 ℎ are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ltrelsr 7751	. . . . 5 ⊢ <R ⊆ (R × R)
2	1	brel 4690	. . . 4 ⊢ (0R <R 𝐴 → (0R ∈ R ∧ 𝐴 ∈ R))
3	2	simprd 114	. . 3 ⊢ (0R <R 𝐴 → 𝐴 ∈ R)
4	1	brel 4690	. . . 4 ⊢ (0R <R 𝐵 → (0R ∈ R ∧ 𝐵 ∈ R))
5	4	simprd 114	. . 3 ⊢ (0R <R 𝐵 → 𝐵 ∈ R)
6	3, 5	anim12i 338	. 2 ⊢ ((0R <R 𝐴 ∧ 0R <R 𝐵) → (𝐴 ∈ R ∧ 𝐵 ∈ R))
7		df-nr 7740	. . 3 ⊢ R = ((P × P) / ~R )
8		breq2 4019	. . . . 5 ⊢ ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → (0R <R [⟨𝑥, 𝑦⟩] ~R ↔ 0R <R 𝐴))
9	8	anbi1d 465	. . . 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 5895	. . . . 5 ⊢ ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) = (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ))
11	10	breq2d 4027	. . . 4 ⊢ ([⟨𝑥, 𝑦⟩] ~R = 𝐴 → (0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ 0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R )))
12	9, 11	imbi12d 234	. . 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 4019	. . . . 5 ⊢ ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (0R <R [⟨𝑧, 𝑤⟩] ~R ↔ 0R <R 𝐵))
14	13	anbi2d 464	. . . 4 ⊢ ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → ((0R <R 𝐴 ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) ↔ (0R <R 𝐴 ∧ 0R <R 𝐵)))
15		oveq2 5896	. . . . 5 ⊢ ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ) = (𝐴 ·R 𝐵))
16	15	breq2d 4027	. . . 4 ⊢ ([⟨𝑧, 𝑤⟩] ~R = 𝐵 → (0R <R (𝐴 ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ 0R <R (𝐴 ·R 𝐵)))
17	14, 16	imbi12d 234	. . 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 7761	. . . . 5 ⊢ (0R <R [⟨𝑥, 𝑦⟩] ~R ↔ 𝑦<P 𝑥)
19		gt0srpr 7761	. . . . 5 ⊢ (0R <R [⟨𝑧, 𝑤⟩] ~R ↔ 𝑤<P 𝑧)
20	18, 19	anbi12i 460	. . . 4 ⊢ ((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) ↔ (𝑦<P 𝑥 ∧ 𝑤<P 𝑧))
21		ltexpri 7626	. . . . . . 7 ⊢ (𝑦<P 𝑥 → ∃𝑣 ∈ P (𝑦 +P 𝑣) = 𝑥)
22		ltexpri 7626	. . . . . . . . 9 ⊢ (𝑤<P 𝑧 → ∃𝑢 ∈ P (𝑤 +P 𝑢) = 𝑧)
23		addclpr 7550	. . . . . . . . . . . . . 14 ⊢ ((𝑓 ∈ P ∧ 𝑔 ∈ P) → (𝑓 +P 𝑔) ∈ P)
24	23	adantl 277	. . . . . . . . . . . . 13 ⊢ ((((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓 ∈ P ∧ 𝑔 ∈ P)) → (𝑓 +P 𝑔) ∈ P)
25		simplrr 536	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 +P 𝑣) = 𝑥)
26		simplr 528	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → 𝑦 ∈ P)
27	26	ad2antrr 488	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑦 ∈ P)
28		simplrl 535	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑣 ∈ P)
29	24, 27, 28	caovcld 6042	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 +P 𝑣) ∈ P)
30	25, 29	eqeltrrd 2265	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑥 ∈ P)
31		simplrr 536	. . . . . . . . . . . . . . 15 ⊢ ((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) → 𝑤 ∈ P)
32	31	adantr 276	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑤 ∈ P)
33		mulclpr 7585	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ P ∧ 𝑤 ∈ P) → (𝑥 ·P 𝑤) ∈ P)
34	30, 32, 33	syl2anc 411	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑥 ·P 𝑤) ∈ P)
35		simplrl 535	. . . . . . . . . . . . . . 15 ⊢ ((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) → 𝑧 ∈ P)
36	35	adantr 276	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑧 ∈ P)
37		mulclpr 7585	. . . . . . . . . . . . . 14 ⊢ ((𝑦 ∈ P ∧ 𝑧 ∈ P) → (𝑦 ·P 𝑧) ∈ P)
38	27, 36, 37	syl2anc 411	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑧) ∈ P)
39	24, 34, 38	caovcld 6042	. . . . . . . . . . . 12 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) ∈ P)
40		simprl 529	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → 𝑢 ∈ P)
41		mulclpr 7585	. . . . . . . . . . . . 13 ⊢ ((𝑣 ∈ P ∧ 𝑢 ∈ P) → (𝑣 ·P 𝑢) ∈ P)
42	28, 40, 41	syl2anc 411	. . . . . . . . . . . 12 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑣 ·P 𝑢) ∈ P)
43		ltaddpr 7610	. . . . . . . . . . . 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)))
44	39, 42, 43	syl2anc 411	. . . . . . . . . . 11 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 531	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑤 +P 𝑢) = 𝑧)
46		oveq12 5897	. . . . . . . . . . . . . . . 16 ⊢ (((𝑦 +P 𝑣) = 𝑥 ∧ (𝑤 +P 𝑢) = 𝑧) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (𝑥 ·P 𝑧))
47	46	oveq1d 5903	. . . . . . . . . . . . . . 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))))
48	25, 45, 47	syl2anc 411	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7601	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑦 ∈ P ∧ 𝑤 ∈ P ∧ 𝑢 ∈ P) → (𝑦 ·P (𝑤 +P 𝑢)) = ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)))
50	27, 32, 40, 49	syl3anc 1248	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P (𝑤 +P 𝑢)) = ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)))
51		oveq2 5896	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑤 +P 𝑢) = 𝑧 → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
52	51	adantl 277	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧) → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
53	52	adantl 277	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P (𝑤 +P 𝑢)) = (𝑦 ·P 𝑧))
54	50, 53	eqtr3d 2222	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑤) +P (𝑦 ·P 𝑢)) = (𝑦 ·P 𝑧))
55	54	oveq1d 5903	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7601	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑓 ∈ P ∧ 𝑔 ∈ P ∧ ℎ ∈ P) → (𝑓 ·P (𝑔 +P ℎ)) = ((𝑓 ·P 𝑔) +P (𝑓 ·P ℎ)))
57	56	adantl 277	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓 ∈ P ∧ 𝑔 ∈ P ∧ ℎ ∈ P)) → (𝑓 ·P (𝑔 +P ℎ)) = ((𝑓 ·P 𝑔) +P (𝑓 ·P ℎ)))
58		mulcomprg 7593	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑓 ∈ P ∧ 𝑔 ∈ P) → (𝑓 ·P 𝑔) = (𝑔 ·P 𝑓))
59	58	adantl 277	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓 ∈ P ∧ 𝑔 ∈ P)) → (𝑓 ·P 𝑔) = (𝑔 ·P 𝑓))
60	57, 27, 28, 32, 24, 59	caovdir2d 6065	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑤) = ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)))
61	57, 27, 28, 40, 24, 59	caovdir2d 6065	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑢) = ((𝑦 ·P 𝑢) +P (𝑣 ·P 𝑢)))
62	60, 61	oveq12d 5906	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7601	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑦 +P 𝑣) ∈ P ∧ 𝑤 ∈ P ∧ 𝑢 ∈ P) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (((𝑦 +P 𝑣) ·P 𝑤) +P ((𝑦 +P 𝑣) ·P 𝑢)))
64	29, 32, 40, 63	syl3anc 1248	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = (((𝑦 +P 𝑣) ·P 𝑤) +P ((𝑦 +P 𝑣) ·P 𝑢)))
65		mulclpr 7585	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑦 ∈ P ∧ 𝑤 ∈ P) → (𝑦 ·P 𝑤) ∈ P)
66	27, 32, 65	syl2anc 411	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑤) ∈ P)
67		mulclpr 7585	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑦 ∈ P ∧ 𝑢 ∈ P) → (𝑦 ·P 𝑢) ∈ P)
68	27, 40, 67	syl2anc 411	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑦 ·P 𝑢) ∈ P)
69		mulclpr 7585	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑣 ∈ P ∧ 𝑤 ∈ P) → (𝑣 ·P 𝑤) ∈ P)
70	28, 32, 69	syl2anc 411	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑣 ·P 𝑤) ∈ P)
71		addcomprg 7591	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑓 ∈ P ∧ 𝑔 ∈ P) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
72	71	adantl 277	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓 ∈ P ∧ 𝑔 ∈ P)) → (𝑓 +P 𝑔) = (𝑔 +P 𝑓))
73		addassprg 7592	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑓 ∈ P ∧ 𝑔 ∈ P ∧ ℎ ∈ P) → ((𝑓 +P 𝑔) +P ℎ) = (𝑓 +P (𝑔 +P ℎ)))
74	73	adantl 277	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) ∧ (𝑓 ∈ P ∧ 𝑔 ∈ P ∧ ℎ ∈ P)) → ((𝑓 +P 𝑔) +P ℎ) = (𝑓 +P (𝑔 +P ℎ)))
75	66, 68, 70, 72, 74, 42, 24	caov4d 6073	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
76	62, 64, 75	3eqtr4d 2230	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
77	70, 38, 42, 72, 74	caov12d 6070	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
78	55, 76, 77	3eqtr4d 2230	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P (𝑤 +P 𝑢)) = ((𝑣 ·P 𝑤) +P ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢))))
79		oveq1 5895	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑦 +P 𝑣) = 𝑥 → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
80	79	adantl 277	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥) → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
81	80	ad2antlr 489	. . . . . . . . . . . . . . . 16 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 +P 𝑣) ·P 𝑤) = (𝑥 ·P 𝑤))
82	60, 81	eqtr3d 2222	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑤) +P (𝑣 ·P 𝑤)) = (𝑥 ·P 𝑤))
83	78, 82	oveq12d 5906	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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)))
84	48, 83	eqtr3d 2222	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7585	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ P ∧ 𝑧 ∈ P) → (𝑥 ·P 𝑧) ∈ P)
86	30, 36, 85	syl2anc 411	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (𝑥 ·P 𝑧) ∈ P)
87		addassprg 7592	. . . . . . . . . . . . . . 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))))
88	86, 66, 70, 87	syl3anc 1248	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7550	. . . . . . . . . . . . . . . 16 ⊢ (((𝑥 ·P 𝑧) ∈ P ∧ (𝑦 ·P 𝑤) ∈ P) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P)
90	86, 66, 89	syl2anc 411	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) ∈ P)
91		addcomprg 7591	. . . . . . . . . . . . . . 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))))
92	90, 70, 91	syl2anc 411	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
93	88, 92	eqtr3d 2222	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
94	24, 38, 42	caovcld 6042	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑦 ·P 𝑧) +P (𝑣 ·P 𝑢)) ∈ P)
95		addassprg 7592	. . . . . . . . . . . . . . 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)))))
96	70, 34, 94, 95	syl3anc 1248	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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)))))
97	70, 94, 34, 72, 74	caov32d 6069	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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 7592	. . . . . . . . . . . . . . . 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))))
99	34, 38, 42, 98	syl3anc 1248	. . . . . . . . . . . . . . 15 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
100	99	oveq2d 5904	. . . . . . . . . . . . . 14 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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)))))
101	96, 97, 100	3eqtr4d 2230	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
102	84, 93, 101	3eqtr3d 2228	. . . . . . . . . . . 12 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
103	24, 39, 42	caovcld 6042	. . . . . . . . . . . . 13 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)) ∈ P)
104		addcanprg 7629	. . . . . . . . . . . . 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))))
105	70, 90, 103, 104	syl3anc 1248	. . . . . . . . . . . 12 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (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))))
106	102, 105	mpd 13	. . . . . . . . . . 11 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)) = (((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧)) +P (𝑣 ·P 𝑢)))
107	44, 106	breqtrrd 4043	. . . . . . . . . 10 ⊢ (((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) ∧ (𝑢 ∈ P ∧ (𝑤 +P 𝑢) = 𝑧)) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))
108	107	rexlimdvaa 2605	. . . . . . . . 9 ⊢ ((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) → (∃𝑢 ∈ P (𝑤 +P 𝑢) = 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
109	22, 108	syl5 32	. . . . . . . 8 ⊢ ((((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) ∧ (𝑣 ∈ P ∧ (𝑦 +P 𝑣) = 𝑥)) → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
110	109	rexlimdvaa 2605	. . . . . . 7 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → (∃𝑣 ∈ P (𝑦 +P 𝑣) = 𝑥 → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))))
111	21, 110	syl5 32	. . . . . 6 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → (𝑦<P 𝑥 → (𝑤<P 𝑧 → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)))))
112	111	impd 254	. . . . 5 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → ((𝑦<P 𝑥 ∧ 𝑤<P 𝑧) → ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
113		mulsrpr 7759	. . . . . . 7 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) = [⟨((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤)), ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))⟩] ~R )
114	113	breq2d 4027	. . . . . 6 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → (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 7761	. . . . . 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)))
116	114, 115	bitrdi 196	. . . . 5 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → (0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R ) ↔ ((𝑥 ·P 𝑤) +P (𝑦 ·P 𝑧))<P ((𝑥 ·P 𝑧) +P (𝑦 ·P 𝑤))))
117	112, 116	sylibrd 169	. . . 4 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → ((𝑦<P 𝑥 ∧ 𝑤<P 𝑧) → 0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R )))
118	20, 117	biimtrid 152	. . 3 ⊢ (((𝑥 ∈ P ∧ 𝑦 ∈ P) ∧ (𝑧 ∈ P ∧ 𝑤 ∈ P)) → ((0R <R [⟨𝑥, 𝑦⟩] ~R ∧ 0R <R [⟨𝑧, 𝑤⟩] ~R ) → 0R <R ([⟨𝑥, 𝑦⟩] ~R ·R [⟨𝑧, 𝑤⟩] ~R )))
119	7, 12, 17, 118	2ecoptocl 6637	. 2 ⊢ ((𝐴 ∈ R ∧ 𝐵 ∈ R) → ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵)))
120	6, 119	mpcom 36	1 ⊢ ((0R <R 𝐴 ∧ 0R <R 𝐵) → 0R <R (𝐴 ·R 𝐵))

Syntax hints:   → wi 4   ∧ wa 104   ∧ w3a 979   = wceq 1363   ∈ wcel 2158  ∃wrex 2466  ⟨cop 3607   class class class wbr 4015  (class class class)co 5888  [cec 6547  Pcnp 7304   +_P cpp 7306   ·_P cmp 7307  <_P cltp 7308   ~_R cer 7309  Rcnr 7310  0_Rc0r 7311   ·_R cmr 7315   <_R cltr 7316

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 710  ax-5 1457  ax-7 1458  ax-gen 1459  ax-ie1 1503  ax-ie2 1504  ax-8 1514  ax-10 1515  ax-11 1516  ax-i12 1517  ax-bndl 1519  ax-4 1520  ax-17 1536  ax-i9 1540  ax-ial 1544  ax-i5r 1545  ax-13 2160  ax-14 2161  ax-ext 2169  ax-coll 4130  ax-sep 4133  ax-nul 4141  ax-pow 4186  ax-pr 4221  ax-un 4445  ax-setind 4548  ax-iinf 4599

This theorem depends on definitions:  df-bi 117  df-dc 836  df-3or 980  df-3an 981  df-tru 1366  df-fal 1369  df-nf 1471  df-sb 1773  df-eu 2039  df-mo 2040  df-clab 2174  df-cleq 2180  df-clel 2183  df-nfc 2318  df-ne 2358  df-ral 2470  df-rex 2471  df-reu 2472  df-rab 2474  df-v 2751  df-sbc 2975  df-csb 3070  df-dif 3143  df-un 3145  df-in 3147  df-ss 3154  df-nul 3435  df-pw 3589  df-sn 3610  df-pr 3611  df-op 3613  df-uni 3822  df-int 3857  df-iun 3900  df-br 4016  df-opab 4077  df-mpt 4078  df-tr 4114  df-eprel 4301  df-id 4305  df-po 4308  df-iso 4309  df-iord 4378  df-on 4380  df-suc 4383  df-iom 4602  df-xp 4644  df-rel 4645  df-cnv 4646  df-co 4647  df-dm 4648  df-rn 4649  df-res 4650  df-ima 4651  df-iota 5190  df-fun 5230  df-fn 5231  df-f 5232  df-f1 5233  df-fo 5234  df-f1o 5235  df-fv 5236  df-ov 5891  df-oprab 5892  df-mpo 5893  df-1st 6155  df-2nd 6156  df-recs 6320  df-irdg 6385  df-1o 6431  df-2o 6432  df-oadd 6435  df-omul 6436  df-er 6549  df-ec 6551  df-qs 6555  df-ni 7317  df-pli 7318  df-mi 7319  df-lti 7320  df-plpq 7357  df-mpq 7358  df-enq 7360  df-nqqs 7361  df-plqqs 7362  df-mqqs 7363  df-1nqqs 7364  df-rq 7365  df-ltnqqs 7366  df-enq0 7437  df-nq0 7438  df-0nq0 7439  df-plq0 7440  df-mq0 7441  df-inp 7479  df-i1p 7480  df-iplp 7481  df-imp 7482  df-iltp 7483  df-enr 7739  df-nr 7740  df-mr 7742  df-ltr 7743  df-0r 7744

This theorem is referenced by:  axpre-mulgt0  7900