Step |
Hyp |
Ref |
Expression |
1 |
|
cutmin.1 |
|
2 |
|
cutmin.2 |
|
3 |
|
cutmin.3 |
|
4 |
|
simpr |
|
5 |
|
ssltss1 |
|
6 |
1 5
|
syl |
|
7 |
6
|
sselda |
|
8 |
|
slerflex |
|
9 |
7 8
|
syl |
|
10 |
|
breq2 |
|
11 |
10
|
rspcev |
|
12 |
4 9 11
|
syl2anc |
|
13 |
12
|
ralrimiva |
|
14 |
|
breq1 |
|
15 |
14
|
rexsng |
|
16 |
2 15
|
syl |
|
17 |
16
|
ralbidv |
|
18 |
3 17
|
mpbird |
|
19 |
|
scutcut |
|
20 |
1 19
|
syl |
|
21 |
20
|
simp2d |
|
22 |
20
|
simp3d |
|
23 |
2
|
snssd |
|
24 |
|
sssslt2 |
|
25 |
22 23 24
|
syl2anc |
|
26 |
1 13 18 21 25
|
cofcut1d |
|