Description: Part of proof of Lemma E in Crawley p. 113, 2nd paragraph on p. 114. X represents t_1. In their notation, we prove p \/ t_1 = p \/ t. (Contributed by NM, 8-Oct-2012) (New usage is discouraged.)
Ref | Expression | ||
---|---|---|---|
Hypotheses | cdleme8t.l | ||
cdleme8t.j | |||
cdleme8t.m | |||
cdleme8t.a | |||
cdleme8t.h | |||
cdleme8t.x | |||
Assertion | cdleme8tN |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cdleme8t.l | ||
2 | cdleme8t.j | ||
3 | cdleme8t.m | ||
4 | cdleme8t.a | ||
5 | cdleme8t.h | ||
6 | cdleme8t.x | ||
7 | 1 2 3 4 5 6 | cdleme8 |