Step |
Hyp |
Ref |
Expression |
1 |
|
pell1qrss14 |
|
2 |
1
|
sselda |
|
3 |
|
pell1qrge1 |
|
4 |
2 3
|
jca |
|
5 |
|
1red |
|
6 |
|
pell14qrre |
|
7 |
5 6
|
leloed |
|
8 |
5 6
|
ltnled |
|
9 |
8
|
biimpa |
|
10 |
|
1div1e1 |
|
11 |
10
|
eqcomi |
|
12 |
11
|
a1i |
|
13 |
12
|
breq2d |
|
14 |
6
|
adantr |
|
15 |
|
pell14qrgt0 |
|
16 |
15
|
adantr |
|
17 |
|
1red |
|
18 |
|
0lt1 |
|
19 |
18
|
a1i |
|
20 |
|
lerec2 |
|
21 |
14 16 17 19 20
|
syl22anc |
|
22 |
13 21
|
bitrd |
|
23 |
9 22
|
mtbid |
|
24 |
|
simplll |
|
25 |
|
pell1qrge1 |
|
26 |
24 25
|
sylancom |
|
27 |
23 26
|
mtand |
|
28 |
|
pell14qrdich |
|
29 |
28
|
adantr |
|
30 |
|
orel2 |
|
31 |
27 29 30
|
sylc |
|
32 |
|
simpr |
|
33 |
|
pell1qr1 |
|
34 |
33
|
ad2antrr |
|
35 |
32 34
|
eqeltrrd |
|
36 |
31 35
|
jaodan |
|
37 |
36
|
ex |
|
38 |
7 37
|
sylbid |
|
39 |
38
|
impr |
|
40 |
4 39
|
impbida |
|