Nuprl - Pf list exists is member append lemma 1

1. T: Type
2. P: TProp
3. L: T List

xL.P(x) (M,N:T List, x:T. P(x) & L = (M @ (x.N)))

By: Repeat (Analyze 0)

Generated subgoals:

1 4. xL.P(x)
M,N:T List, x:T. P(x) & L = (M @ (x.N))

2 4. M,N:T List, x:T. P(x) & L = (M @ (x.N))
xL.P(x)

About:

1	4. `xL.P(x)` `M,N:T List, x:T. P(x) & L = (M @ (x.N))`
2	4. `M,N:T List, x:T. P(x) & L = (M @ (x.N))` `xL.P(x)`