(7steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: nsub delete

  k:, j:k, m:. m = k-1  ({i:k| i = j } ~ m)

By: Auto


Generated subgoal:

1 1. k : 
2. j : k
3. m : 
4. m = k-1
  {i:k| i = j } ~ m

6 steps

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

(7steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc