Step |
Hyp |
Ref |
Expression |
1 |
|
mdegcl.d |
|
2 |
|
mdegcl.p |
|
3 |
|
mdegcl.b |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
|
eqid |
|
7 |
1 2 3 4 5 6
|
mdegval |
|
8 |
|
supeq1 |
|
9 |
8
|
eleq1d |
|
10 |
|
imassrn |
|
11 |
5 6
|
tdeglem1 |
|
12 |
|
frn |
|
13 |
11 12
|
mp1i |
|
14 |
10 13
|
sstrid |
|
15 |
14
|
adantr |
|
16 |
|
ssun1 |
|
17 |
15 16
|
sstrdi |
|
18 |
|
ffun |
|
19 |
11 18
|
mp1i |
|
20 |
|
id |
|
21 |
|
reldmmpl |
|
22 |
21 2 3
|
elbasov |
|
23 |
22
|
simprd |
|
24 |
2 3 4 20 23
|
mplelsfi |
|
25 |
24
|
fsuppimpd |
|
26 |
|
imafi |
|
27 |
19 25 26
|
syl2anc |
|
28 |
27
|
adantr |
|
29 |
|
simpr |
|
30 |
|
nn0ssre |
|
31 |
|
ressxr |
|
32 |
30 31
|
sstri |
|
33 |
15 32
|
sstrdi |
|
34 |
|
xrltso |
|
35 |
|
fisupcl |
|
36 |
34 35
|
mpan |
|
37 |
28 29 33 36
|
syl3anc |
|
38 |
17 37
|
sseldd |
|
39 |
|
xrsup0 |
|
40 |
|
ssun2 |
|
41 |
|
mnfxr |
|
42 |
41
|
elexi |
|
43 |
42
|
snid |
|
44 |
40 43
|
sselii |
|
45 |
39 44
|
eqeltri |
|
46 |
45
|
a1i |
|
47 |
9 38 46
|
pm2.61ne |
|
48 |
7 47
|
eqeltrd |
|