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Theorem ltanqg 6498
 Description: Ordering property of addition for positive fractions. Proposition 9-2.6(ii) of [Gleason] p. 120. (Contributed by Jim Kingdon, 22-Sep-2019.)
Assertion
Ref Expression
ltanqg ((𝐴Q𝐵Q𝐶Q) → (𝐴 <Q 𝐵 ↔ (𝐶 +Q 𝐴) <Q (𝐶 +Q 𝐵)))

Proof of Theorem ltanqg
Dummy variables 𝑥 𝑦 𝑧 𝑤 𝑣 𝑢 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-nqqs 6446 . 2 Q = ((N × N) / ~Q )
2 breq1 3767 . . 3 ([⟨𝑥, 𝑦⟩] ~Q = 𝐴 → ([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q𝐴 <Q [⟨𝑧, 𝑤⟩] ~Q ))
3 oveq2 5520 . . . 4 ([⟨𝑥, 𝑦⟩] ~Q = 𝐴 → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) = ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴))
43breq1d 3774 . . 3 ([⟨𝑥, 𝑦⟩] ~Q = 𝐴 → (([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q )))
52, 4bibi12d 224 . 2 ([⟨𝑥, 𝑦⟩] ~Q = 𝐴 → (([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q )) ↔ (𝐴 <Q [⟨𝑧, 𝑤⟩] ~Q ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ))))
6 breq2 3768 . . 3 ([⟨𝑧, 𝑤⟩] ~Q = 𝐵 → (𝐴 <Q [⟨𝑧, 𝑤⟩] ~Q𝐴 <Q 𝐵))
7 oveq2 5520 . . . 4 ([⟨𝑧, 𝑤⟩] ~Q = 𝐵 → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) = ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵))
87breq2d 3776 . . 3 ([⟨𝑧, 𝑤⟩] ~Q = 𝐵 → (([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵)))
96, 8bibi12d 224 . 2 ([⟨𝑧, 𝑤⟩] ~Q = 𝐵 → ((𝐴 <Q [⟨𝑧, 𝑤⟩] ~Q ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q )) ↔ (𝐴 <Q 𝐵 ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵))))
10 oveq1 5519 . . . 4 ([⟨𝑣, 𝑢⟩] ~Q = 𝐶 → ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) = (𝐶 +Q 𝐴))
11 oveq1 5519 . . . 4 ([⟨𝑣, 𝑢⟩] ~Q = 𝐶 → ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵) = (𝐶 +Q 𝐵))
1210, 11breq12d 3777 . . 3 ([⟨𝑣, 𝑢⟩] ~Q = 𝐶 → (([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵) ↔ (𝐶 +Q 𝐴) <Q (𝐶 +Q 𝐵)))
1312bibi2d 221 . 2 ([⟨𝑣, 𝑢⟩] ~Q = 𝐶 → ((𝐴 <Q 𝐵 ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐴) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q 𝐵)) ↔ (𝐴 <Q 𝐵 ↔ (𝐶 +Q 𝐴) <Q (𝐶 +Q 𝐵))))
14 addclpi 6425 . . . . . 6 ((𝑓N𝑔N) → (𝑓 +N 𝑔) ∈ N)
1514adantl 262 . . . . 5 ((((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) ∧ (𝑓N𝑔N)) → (𝑓 +N 𝑔) ∈ N)
16 simp3l 932 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑣N)
17 simp1r 929 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑦N)
18 mulclpi 6426 . . . . . 6 ((𝑣N𝑦N) → (𝑣 ·N 𝑦) ∈ N)
1916, 17, 18syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑣 ·N 𝑦) ∈ N)
20 simp3r 933 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑢N)
21 simp1l 928 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑥N)
22 mulclpi 6426 . . . . . 6 ((𝑢N𝑥N) → (𝑢 ·N 𝑥) ∈ N)
2320, 21, 22syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑢 ·N 𝑥) ∈ N)
2415, 19, 23caovcld 5654 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ∈ N)
25 mulclpi 6426 . . . . 5 ((𝑢N𝑦N) → (𝑢 ·N 𝑦) ∈ N)
2620, 17, 25syl2anc 391 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑢 ·N 𝑦) ∈ N)
27 mulclpi 6426 . . . . . . 7 ((𝑓N𝑔N) → (𝑓 ·N 𝑔) ∈ N)
2827adantl 262 . . . . . 6 ((((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) ∧ (𝑓N𝑔N)) → (𝑓 ·N 𝑔) ∈ N)
29 simp2r 931 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑤N)
3028, 16, 29caovcld 5654 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑣 ·N 𝑤) ∈ N)
31 simp2l 930 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → 𝑧N)
32 mulclpi 6426 . . . . . 6 ((𝑢N𝑧N) → (𝑢 ·N 𝑧) ∈ N)
3320, 31, 32syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑢 ·N 𝑧) ∈ N)
3415, 30, 33caovcld 5654 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)) ∈ N)
35 mulclpi 6426 . . . . 5 ((𝑢N𝑤N) → (𝑢 ·N 𝑤) ∈ N)
3620, 29, 35syl2anc 391 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑢 ·N 𝑤) ∈ N)
37 ordpipqqs 6472 . . . 4 (((((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ∈ N ∧ (𝑢 ·N 𝑦) ∈ N) ∧ (((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)) ∈ N ∧ (𝑢 ·N 𝑤) ∈ N)) → ([⟨((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)), (𝑢 ·N 𝑦)⟩] ~Q <Q [⟨((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)), (𝑢 ·N 𝑤)⟩] ~Q ↔ (((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)))))
3824, 26, 34, 36, 37syl22anc 1136 . . 3 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)), (𝑢 ·N 𝑦)⟩] ~Q <Q [⟨((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)), (𝑢 ·N 𝑤)⟩] ~Q ↔ (((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)))))
39 simp3 906 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑣N𝑢N))
40 simp1 904 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑥N𝑦N))
41 addpipqqs 6468 . . . . 5 (((𝑣N𝑢N) ∧ (𝑥N𝑦N)) → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) = [⟨((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)), (𝑢 ·N 𝑦)⟩] ~Q )
4239, 40, 41syl2anc 391 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) = [⟨((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)), (𝑢 ·N 𝑦)⟩] ~Q )
43 simp2 905 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑧N𝑤N))
44 addpipqqs 6468 . . . . 5 (((𝑣N𝑢N) ∧ (𝑧N𝑤N)) → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) = [⟨((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)), (𝑢 ·N 𝑤)⟩] ~Q )
4539, 43, 44syl2anc 391 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) = [⟨((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)), (𝑢 ·N 𝑤)⟩] ~Q )
4642, 45breq12d 3777 . . 3 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q ) ↔ [⟨((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)), (𝑢 ·N 𝑦)⟩] ~Q <Q [⟨((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)), (𝑢 ·N 𝑤)⟩] ~Q ))
47 ordpipqqs 6472 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N)) → ([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (𝑥 ·N 𝑤) <N (𝑦 ·N 𝑧)))
48473adant3 924 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (𝑥 ·N 𝑤) <N (𝑦 ·N 𝑧)))
49 mulclpi 6426 . . . . . 6 ((𝑥N𝑤N) → (𝑥 ·N 𝑤) ∈ N)
5021, 29, 49syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑥 ·N 𝑤) ∈ N)
51 mulclpi 6426 . . . . . 6 ((𝑦N𝑧N) → (𝑦 ·N 𝑧) ∈ N)
5217, 31, 51syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑦 ·N 𝑧) ∈ N)
53 mulclpi 6426 . . . . . 6 ((𝑢N𝑢N) → (𝑢 ·N 𝑢) ∈ N)
5420, 20, 53syl2anc 391 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (𝑢 ·N 𝑢) ∈ N)
55 ltmpig 6437 . . . . 5 (((𝑥 ·N 𝑤) ∈ N ∧ (𝑦 ·N 𝑧) ∈ N ∧ (𝑢 ·N 𝑢) ∈ N) → ((𝑥 ·N 𝑤) <N (𝑦 ·N 𝑧) ↔ ((𝑢 ·N 𝑢) ·N (𝑥 ·N 𝑤)) <N ((𝑢 ·N 𝑢) ·N (𝑦 ·N 𝑧))))
5650, 52, 54, 55syl3anc 1135 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑥 ·N 𝑤) <N (𝑦 ·N 𝑧) ↔ ((𝑢 ·N 𝑢) ·N (𝑥 ·N 𝑤)) <N ((𝑢 ·N 𝑢) ·N (𝑦 ·N 𝑧))))
57 mulclpi 6426 . . . . . . 7 (((𝑢 ·N 𝑥) ∈ N ∧ (𝑢 ·N 𝑤) ∈ N) → ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) ∈ N)
5823, 36, 57syl2anc 391 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) ∈ N)
59 mulclpi 6426 . . . . . . 7 (((𝑢 ·N 𝑦) ∈ N ∧ (𝑢 ·N 𝑧) ∈ N) → ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)) ∈ N)
6026, 33, 59syl2anc 391 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)) ∈ N)
61 mulclpi 6426 . . . . . . 7 (((𝑣 ·N 𝑦) ∈ N ∧ (𝑢 ·N 𝑤) ∈ N) → ((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) ∈ N)
6219, 36, 61syl2anc 391 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) ∈ N)
63 ltapig 6436 . . . . . 6 ((((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) ∈ N ∧ ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)) ∈ N ∧ ((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) ∈ N) → (((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)) ↔ (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤))) <N (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)))))
6458, 60, 62, 63syl3anc 1135 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)) ↔ (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤))) <N (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)))))
65 mulcompig 6429 . . . . . . . 8 ((𝑓N𝑔N) → (𝑓 ·N 𝑔) = (𝑔 ·N 𝑓))
6665adantl 262 . . . . . . 7 ((((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) ∧ (𝑓N𝑔N)) → (𝑓 ·N 𝑔) = (𝑔 ·N 𝑓))
67 mulasspig 6430 . . . . . . . 8 ((𝑓N𝑔NN) → ((𝑓 ·N 𝑔) ·N ) = (𝑓 ·N (𝑔 ·N )))
6867adantl 262 . . . . . . 7 ((((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) ∧ (𝑓N𝑔NN)) → ((𝑓 ·N 𝑔) ·N ) = (𝑓 ·N (𝑔 ·N )))
6920, 20, 21, 66, 68, 29, 28caov4d 5685 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑢) ·N (𝑥 ·N 𝑤)) = ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)))
7020, 20, 17, 66, 68, 31, 28caov4d 5685 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑢) ·N (𝑦 ·N 𝑧)) = ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)))
7169, 70breq12d 3777 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (((𝑢 ·N 𝑢) ·N (𝑥 ·N 𝑤)) <N ((𝑢 ·N 𝑢) ·N (𝑦 ·N 𝑧)) ↔ ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧))))
72 distrpig 6431 . . . . . . . 8 ((𝑓N𝑔NN) → (𝑓 ·N (𝑔 +N )) = ((𝑓 ·N 𝑔) +N (𝑓 ·N )))
7372adantl 262 . . . . . . 7 ((((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) ∧ (𝑓N𝑔NN)) → (𝑓 ·N (𝑔 +N )) = ((𝑓 ·N 𝑔) +N (𝑓 ·N )))
7473, 19, 23, 36, 15, 66caovdir2d 5677 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) = (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤))))
7573, 26, 30, 33caovdid 5676 . . . . . . 7 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧))) = (((𝑢 ·N 𝑦) ·N (𝑣 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧))))
7620, 17, 16, 66, 68, 29, 28caov411d 5686 . . . . . . . 8 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑦) ·N (𝑣 ·N 𝑤)) = ((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)))
7776oveq1d 5527 . . . . . . 7 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (((𝑢 ·N 𝑦) ·N (𝑣 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧))) = (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧))))
7875, 77eqtrd 2072 . . . . . 6 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧))) = (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧))))
7974, 78breq12d 3777 . . . . 5 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ((((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧))) ↔ (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑥) ·N (𝑢 ·N 𝑤))) <N (((𝑣 ·N 𝑦) ·N (𝑢 ·N 𝑤)) +N ((𝑢 ·N 𝑦) ·N (𝑢 ·N 𝑧)))))
8064, 71, 793bitr4d 209 . . . 4 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → (((𝑢 ·N 𝑢) ·N (𝑥 ·N 𝑤)) <N ((𝑢 ·N 𝑢) ·N (𝑦 ·N 𝑧)) ↔ (((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)))))
8148, 56, 803bitrd 203 . . 3 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ (((𝑣 ·N 𝑦) +N (𝑢 ·N 𝑥)) ·N (𝑢 ·N 𝑤)) <N ((𝑢 ·N 𝑦) ·N ((𝑣 ·N 𝑤) +N (𝑢 ·N 𝑧)))))
8238, 46, 813bitr4rd 210 . 2 (((𝑥N𝑦N) ∧ (𝑧N𝑤N) ∧ (𝑣N𝑢N)) → ([⟨𝑥, 𝑦⟩] ~Q <Q [⟨𝑧, 𝑤⟩] ~Q ↔ ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑥, 𝑦⟩] ~Q ) <Q ([⟨𝑣, 𝑢⟩] ~Q +Q [⟨𝑧, 𝑤⟩] ~Q )))
831, 5, 9, 13, 823ecoptocl 6195 1 ((𝐴Q𝐵Q𝐶Q) → (𝐴 <Q 𝐵 ↔ (𝐶 +Q 𝐴) <Q (𝐶 +Q 𝐵)))
 Colors of variables: wff set class Syntax hints:   → wi 4   ∧ wa 97   ↔ wb 98   ∧ w3a 885   = wceq 1243   ∈ wcel 1393  ⟨cop 3378   class class class wbr 3764  (class class class)co 5512  [cec 6104  Ncnpi 6370   +N cpli 6371   ·N cmi 6372
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