Def WellFnd{i}(A;x,y.R(x;y))
Def == P:(AProp). (j:A. (k:A. R(k;j)  P(k))  P(j))  {n:A. P(n)}

is mentioned by

Thm* i:, j:{i...}. WellFnd{u}({i..j};x,y.x>y)	[int_seg_well_founded_down]
Thm* i:, j:{i...}. WellFnd{u}({i..j};x,y.x<y)	[int_seg_well_founded_up]
Thm* n:. WellFnd{i}({...n};x,y.x>y)	[int_lower_well_founded]
Thm* n:. WellFnd{i}({n...};x,y.x<y)	[int_upper_well_founded]
Thm* WellFnd{i}(;x,y.|x|<|y|)	[int_mag_well_founded]

In prior sections: well fnd int 1

Try larger context: StandardLIB IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html