IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
upto decomp2221 1. m : 2. 0<m 3. n:(m-1+1). upto(m-1) ~ (upto(n) @ map(x.x+n;upto(m-1-n)))
4. n : (m+1)
5. n = m 6. m = 0
7. upto(m-1) ~ (upto(n) @ map(x.x+n;upto(m-1-n)))
((upto(n) @ map(x.x+n;upto(m-1-n))) @ [(m-1)]) ~ (upto(n)
@ map(x.x+n;upto(m-n)))
By:
RWO Thm*as,bs,cs:Top List. ((as @ bs) @ cs) ~ (as @ bs @ cs) 0 THEN Analyze
THEN
Try Trivial