Description: 'nand' is equivalent to the equivalence of inclusive and exclusive or. (Contributed by Steve Rodriguez, 28-Feb-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | nanorxor | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nan | |
|
2 | xor2 | |
|
3 | 2 | rbaibr | |
4 | 2 | bibi2i | |
5 | pm4.71 | |
|
6 | simpl | |
|
7 | 6 | orcd | |
8 | 7 | con3i | |
9 | id | |
|
10 | 8 9 | ja | |
11 | 5 10 | sylbir | |
12 | 4 11 | sylbi | |
13 | 3 12 | impbii | |
14 | 1 13 | bitri | |