Nuprl - Pf en_inj 1 2 1 1

1. n:
2. m:
3. 0 < m
4. l1,l2:n*. ||l1|| = m-1 & ||l2|| = m-1 en(l1) = en(l2) l1 = l2
5. l1: n*
6. l2: n*

||nil|| = m & ||l2|| = m en(nil) = en(l2) nil = l2

By: Analyze 6

Generated subgoals:

1 ||nil|| = m & ||nil|| = m en(nil) = en(nil) nil = nil n*

2 7. u: n
8. v: n*
||nil|| = m & ||u.v|| = m en(nil) = en(u.v) nil = u.v

About:

1	`\|\|nil\|\| = m & \|\|nil\|\| = m en(nil) = en(nil) nil = nil n*`
2	7. `u:` `n` 8. `v:` `n*` `\|\|nil\|\| = m & \|\|u.v\|\| = m en(nil) = en(u.v) nil = u.v`