Description: Two ways to express 3 non-colinear atoms (rotated right 1 place). (Contributed by NM, 12-Jul-2012) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypotheses | 3noncol.l | |
|
3noncol.j | |
||
3noncol.a | |
||
Assertion | 3noncolr1N | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3noncol.l | |
|
2 | 3noncol.j | |
|
3 | 3noncol.a | |
|
4 | simp1 | |
|
5 | simp22 | |
|
6 | simp23 | |
|
7 | simp21 | |
|
8 | 1 2 3 | 3noncolr2 | |
9 | 1 2 3 | 3noncolr2 | |
10 | 4 5 6 7 8 9 | syl131anc | |