Step |
Hyp |
Ref |
Expression |
1 |
|
znchr.y |
|
2 |
|
znunit.u |
|
3 |
|
dfphi2 |
|
4 |
|
nnnn0 |
|
5 |
|
eqid |
|
6 |
|
eqid |
|
7 |
|
eqid |
|
8 |
1 5 6 7
|
znf1o |
|
9 |
4 8
|
syl |
|
10 |
|
nnne0 |
|
11 |
|
ifnefalse |
|
12 |
|
reseq2 |
|
13 |
|
f1oeq1 |
|
14 |
12 13
|
syl |
|
15 |
|
f1oeq2 |
|
16 |
14 15
|
bitrd |
|
17 |
10 11 16
|
3syl |
|
18 |
9 17
|
mpbid |
|
19 |
|
f1ofn |
|
20 |
|
elpreima |
|
21 |
18 19 20
|
3syl |
|
22 |
|
fvres |
|
23 |
22
|
adantl |
|
24 |
23
|
eleq1d |
|
25 |
|
elfzoelz |
|
26 |
|
eqid |
|
27 |
1 2 26
|
znunit |
|
28 |
4 25 27
|
syl2an |
|
29 |
24 28
|
bitrd |
|
30 |
29
|
pm5.32da |
|
31 |
21 30
|
bitrd |
|
32 |
31
|
abbi2dv |
|
33 |
|
df-rab |
|
34 |
32 33
|
syl6eqr |
|
35 |
34
|
fveq2d |
|
36 |
|
f1ocnv |
|
37 |
|
f1of1 |
|
38 |
18 36 37
|
3syl |
|
39 |
|
ovexd |
|
40 |
5 2
|
unitss |
|
41 |
40
|
a1i |
|
42 |
2
|
fvexi |
|
43 |
42
|
a1i |
|
44 |
|
f1imaen2g |
|
45 |
38 39 41 43 44
|
syl22anc |
|
46 |
|
hasheni |
|
47 |
45 46
|
syl |
|
48 |
3 35 47
|
3eqtr2rd |
|