Description: An equality transitivity inference. (Contributed by NM, 6-May-1994)
Ref | Expression | ||
---|---|---|---|
Hypotheses | eqtr3i.1 | |
|
eqtr3i.2 | |
||
Assertion | eqtr3i | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqtr3i.1 | |
|
2 | eqtr3i.2 | |
|
3 | 1 | eqcomi | |
4 | 3 2 | eqtri | |