Nuprl - Proof: firstn upto 1 2

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: firstn upto 1 2

1. n :

2. m :

3. n

firstn(n;upto(n) @ map(

x.x+n;upto(m-n))) ~ upto(n)

By:	RWO Thm* L1,L2:Top List, n:(\|\|L1\|\|+1). firstn(n;L1 @ L2) ~ firstn(n;L1) 0

Generated subgoals:

1 n (||upto(n)||+1)
1 step

2 firstn(n;upto(n)) ~ upto(n)
1 step

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html