Description: A syllogism deduction combined with conjoining antecedents. (Contributed by Alan Sare, 28-Oct-2011)
Ref | Expression | ||
---|---|---|---|
Hypotheses | syl6an.1 | |
|
syl6an.2 | |
||
syl6an.3 | |
||
Assertion | syl6an | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl6an.1 | |
|
2 | syl6an.2 | |
|
3 | syl6an.3 | |
|
4 | 3 | ex | |
5 | 1 2 4 | sylsyld | |