Description: Theorem *11.59 in WhiteheadRussell p. 165. (Contributed by Andrew Salmon, 25-May-2011)
Ref | Expression | ||
---|---|---|---|
Assertion | pm11.59 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv | |
|
2 | 1 | nfal | |
3 | sp | |
|
4 | spsbim | |
|
5 | 3 4 | anim12d | |
6 | 5 | axc4i | |
7 | 2 6 | alrimi | |