| Step |
Hyp |
Ref |
Expression |
| 1 |
|
elpqn |
⊢ ( 𝑥 ∈ Q → 𝑥 ∈ ( N × N ) ) |
| 2 |
1
|
adantr |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → 𝑥 ∈ ( N × N ) ) |
| 3 |
|
xp1st |
⊢ ( 𝑥 ∈ ( N × N ) → ( 1st ‘ 𝑥 ) ∈ N ) |
| 4 |
2 3
|
syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 1st ‘ 𝑥 ) ∈ N ) |
| 5 |
|
elpqn |
⊢ ( 𝑦 ∈ Q → 𝑦 ∈ ( N × N ) ) |
| 6 |
5
|
adantl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → 𝑦 ∈ ( N × N ) ) |
| 7 |
|
xp2nd |
⊢ ( 𝑦 ∈ ( N × N ) → ( 2nd ‘ 𝑦 ) ∈ N ) |
| 8 |
6 7
|
syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 2nd ‘ 𝑦 ) ∈ N ) |
| 9 |
|
mulclpi |
⊢ ( ( ( 1st ‘ 𝑥 ) ∈ N ∧ ( 2nd ‘ 𝑦 ) ∈ N ) → ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ∈ N ) |
| 10 |
4 8 9
|
syl2anc |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ∈ N ) |
| 11 |
|
xp1st |
⊢ ( 𝑦 ∈ ( N × N ) → ( 1st ‘ 𝑦 ) ∈ N ) |
| 12 |
6 11
|
syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 1st ‘ 𝑦 ) ∈ N ) |
| 13 |
|
xp2nd |
⊢ ( 𝑥 ∈ ( N × N ) → ( 2nd ‘ 𝑥 ) ∈ N ) |
| 14 |
2 13
|
syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 2nd ‘ 𝑥 ) ∈ N ) |
| 15 |
|
mulclpi |
⊢ ( ( ( 1st ‘ 𝑦 ) ∈ N ∧ ( 2nd ‘ 𝑥 ) ∈ N ) → ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∈ N ) |
| 16 |
12 14 15
|
syl2anc |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∈ N ) |
| 17 |
|
ltsopi |
⊢ <N Or N |
| 18 |
|
sotric |
⊢ ( ( <N Or N ∧ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ∈ N ∧ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∈ N ) ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ¬ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∨ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 19 |
17 18
|
mpan |
⊢ ( ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ∈ N ∧ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∈ N ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ¬ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∨ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 20 |
10 16 19
|
syl2anc |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ¬ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∨ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 21 |
|
ordpinq |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑥 <Q 𝑦 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 22 |
|
fveq2 |
⊢ ( 𝑥 = 𝑦 → ( 1st ‘ 𝑥 ) = ( 1st ‘ 𝑦 ) ) |
| 23 |
|
fveq2 |
⊢ ( 𝑥 = 𝑦 → ( 2nd ‘ 𝑥 ) = ( 2nd ‘ 𝑦 ) ) |
| 24 |
23
|
eqcomd |
⊢ ( 𝑥 = 𝑦 → ( 2nd ‘ 𝑦 ) = ( 2nd ‘ 𝑥 ) ) |
| 25 |
22 24
|
oveq12d |
⊢ ( 𝑥 = 𝑦 → ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) |
| 26 |
|
enqbreq2 |
⊢ ( ( 𝑥 ∈ ( N × N ) ∧ 𝑦 ∈ ( N × N ) ) → ( 𝑥 ~Q 𝑦 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 27 |
1 5 26
|
syl2an |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑥 ~Q 𝑦 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 28 |
|
enqeq |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑥 ~Q 𝑦 ) → 𝑥 = 𝑦 ) |
| 29 |
28
|
3expia |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑥 ~Q 𝑦 → 𝑥 = 𝑦 ) ) |
| 30 |
27 29
|
sylbird |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) → 𝑥 = 𝑦 ) ) |
| 31 |
25 30
|
impbid2 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑥 = 𝑦 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 32 |
|
ordpinq |
⊢ ( ( 𝑦 ∈ Q ∧ 𝑥 ∈ Q ) → ( 𝑦 <Q 𝑥 ↔ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) |
| 33 |
32
|
ancoms |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑦 <Q 𝑥 ↔ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) |
| 34 |
31 33
|
orbi12d |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ( 𝑥 = 𝑦 ∨ 𝑦 <Q 𝑥 ) ↔ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∨ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 35 |
34
|
notbid |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( ¬ ( 𝑥 = 𝑦 ∨ 𝑦 <Q 𝑥 ) ↔ ¬ ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) = ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ∨ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) <N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 36 |
20 21 35
|
3bitr4d |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ) → ( 𝑥 <Q 𝑦 ↔ ¬ ( 𝑥 = 𝑦 ∨ 𝑦 <Q 𝑥 ) ) ) |
| 37 |
21
|
3adant3 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑥 <Q 𝑦 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 38 |
|
elpqn |
⊢ ( 𝑧 ∈ Q → 𝑧 ∈ ( N × N ) ) |
| 39 |
38
|
3ad2ant3 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → 𝑧 ∈ ( N × N ) ) |
| 40 |
|
xp2nd |
⊢ ( 𝑧 ∈ ( N × N ) → ( 2nd ‘ 𝑧 ) ∈ N ) |
| 41 |
|
ltmpi |
⊢ ( ( 2nd ‘ 𝑧 ) ∈ N → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 42 |
39 40 41
|
3syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) <N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 43 |
37 42
|
bitrd |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑥 <Q 𝑦 ↔ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 44 |
|
ordpinq |
⊢ ( ( 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑦 <Q 𝑧 ↔ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) |
| 45 |
44
|
3adant1 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑦 <Q 𝑧 ↔ ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) |
| 46 |
1
|
3ad2ant1 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → 𝑥 ∈ ( N × N ) ) |
| 47 |
|
ltmpi |
⊢ ( ( 2nd ‘ 𝑥 ) ∈ N → ( ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ↔ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 48 |
46 13 47
|
3syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ↔ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 49 |
45 48
|
bitrd |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑦 <Q 𝑧 ↔ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) |
| 50 |
43 49
|
anbi12d |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( 𝑥 <Q 𝑦 ∧ 𝑦 <Q 𝑧 ) ↔ ( ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ∧ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) ) ) |
| 51 |
|
fvex |
⊢ ( 2nd ‘ 𝑥 ) ∈ V |
| 52 |
|
fvex |
⊢ ( 1st ‘ 𝑦 ) ∈ V |
| 53 |
|
fvex |
⊢ ( 2nd ‘ 𝑧 ) ∈ V |
| 54 |
|
mulcompi |
⊢ ( 𝑟 ·N 𝑠 ) = ( 𝑠 ·N 𝑟 ) |
| 55 |
|
mulasspi |
⊢ ( ( 𝑟 ·N 𝑠 ) ·N 𝑡 ) = ( 𝑟 ·N ( 𝑠 ·N 𝑡 ) ) |
| 56 |
51 52 53 54 55
|
caov13 |
⊢ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) = ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) |
| 57 |
|
fvex |
⊢ ( 1st ‘ 𝑧 ) ∈ V |
| 58 |
|
fvex |
⊢ ( 2nd ‘ 𝑦 ) ∈ V |
| 59 |
51 57 58 54 55
|
caov13 |
⊢ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) = ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) |
| 60 |
56 59
|
breq12i |
⊢ ( ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ↔ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 61 |
|
fvex |
⊢ ( 1st ‘ 𝑥 ) ∈ V |
| 62 |
53 61 58 54 55
|
caov13 |
⊢ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) = ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) |
| 63 |
|
ltrelpi |
⊢ <N ⊆ ( N × N ) |
| 64 |
17 63
|
sotri |
⊢ ( ( ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ∧ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) → ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 65 |
62 64
|
eqbrtrrid |
⊢ ( ( ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ∧ ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) → ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 66 |
60 65
|
sylan2b |
⊢ ( ( ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑦 ) ) ) <N ( ( 2nd ‘ 𝑧 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑥 ) ) ) ∧ ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑦 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑥 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑦 ) ) ) ) → ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 67 |
50 66
|
biimtrdi |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( 𝑥 <Q 𝑦 ∧ 𝑦 <Q 𝑧 ) → ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 68 |
|
ordpinq |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑥 <Q 𝑧 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 69 |
68
|
3adant2 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑥 <Q 𝑧 ↔ ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) |
| 70 |
5
|
3ad2ant2 |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → 𝑦 ∈ ( N × N ) ) |
| 71 |
|
ltmpi |
⊢ ( ( 2nd ‘ 𝑦 ) ∈ N → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 72 |
70 7 71
|
3syl |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) <N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ↔ ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 73 |
69 72
|
bitrd |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( 𝑥 <Q 𝑧 ↔ ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑥 ) ·N ( 2nd ‘ 𝑧 ) ) ) <N ( ( 2nd ‘ 𝑦 ) ·N ( ( 1st ‘ 𝑧 ) ·N ( 2nd ‘ 𝑥 ) ) ) ) ) |
| 74 |
67 73
|
sylibrd |
⊢ ( ( 𝑥 ∈ Q ∧ 𝑦 ∈ Q ∧ 𝑧 ∈ Q ) → ( ( 𝑥 <Q 𝑦 ∧ 𝑦 <Q 𝑧 ) → 𝑥 <Q 𝑧 ) ) |
| 75 |
36 74
|
isso2i |
⊢ <Q Or Q |