Step |
Hyp |
Ref |
Expression |
1 |
|
df-ima |
|
2 |
|
relogrn |
|
3 |
2
|
ssriv |
|
4 |
|
resabs1 |
|
5 |
3 4
|
ax-mp |
|
6 |
5
|
rneqi |
|
7 |
|
reeff1o |
|
8 |
|
dff1o2 |
|
9 |
7 8
|
mpbi |
|
10 |
9
|
simp3i |
|
11 |
1 6 10
|
3eqtri |
|
12 |
11
|
reseq2i |
|
13 |
5
|
cnveqi |
|
14 |
|
logf1o |
|
15 |
|
f1ofun |
|
16 |
14 15
|
ax-mp |
|
17 |
|
dflog2 |
|
18 |
17
|
funeqi |
|
19 |
16 18
|
mpbi |
|
20 |
|
funcnvres |
|
21 |
19 20
|
ax-mp |
|
22 |
13 21
|
eqtr3i |
|
23 |
17
|
reseq1i |
|
24 |
12 22 23
|
3eqtr4ri |
|