Description: Obsolete version of tz6.12-1 as of 23-Dec-2024. (Contributed by NM, 30-Apr-2004) (Proof modification is discouraged.) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Assertion | tz6.12-1OLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-fv | ||
2 | iota1 | ||
3 | 2 | biimpac | |
4 | 1 3 | eqtrid |