Description: Inference exchanging the last antecedent with the second one. (Contributed by Thierry Arnoux, 3-Jun-2025)
Ref | Expression | ||
---|---|---|---|
Hypothesis | an62ds.1 | ||
Assertion | an62ds |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | an62ds.1 | ||
2 | an32 | ||
3 | 2 | anbi1i | |
4 | 3 | anbi1i | |
5 | 1 | an52ds | |
6 | 4 5 | sylanbr | |
7 | 6 | an52ds |