Step |
Hyp |
Ref |
Expression |
1 |
|
2zrng.e |
|
2 |
|
2zrngbas.r |
|
3 |
1 2
|
2zrngasgrp |
Could not format R e. Smgrp : No typesetting found for |- R e. Smgrp with typecode |- |
4 |
1
|
0even |
|
5 |
|
id |
|
6 |
|
oveq1 |
|
7 |
6
|
eqeq1d |
|
8 |
7
|
ovanraleqv |
|
9 |
8
|
adantl |
|
10 |
|
elrabi |
|
11 |
10 1
|
eleq2s |
|
12 |
11
|
zcnd |
|
13 |
|
addid2 |
|
14 |
|
addid1 |
|
15 |
13 14
|
jca |
|
16 |
12 15
|
syl |
|
17 |
16
|
adantl |
|
18 |
17
|
ralrimiva |
|
19 |
5 9 18
|
rspcedvd |
|
20 |
4 19
|
ax-mp |
|
21 |
1 2
|
2zrngbas |
|
22 |
1 2
|
2zrngadd |
|
23 |
21 22
|
ismnddef |
Could not format ( R e. Mnd <-> ( R e. Smgrp /\ E. x e. E A. y e. E ( ( x + y ) = y /\ ( y + x ) = y ) ) ) : No typesetting found for |- ( R e. Mnd <-> ( R e. Smgrp /\ E. x e. E A. y e. E ( ( x + y ) = y /\ ( y + x ) = y ) ) ) with typecode |- |
24 |
3 20 23
|
mpbir2an |
|