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* WellFnd{i}(;x,y.x<y)

[nat_well_founded]

In prior sections: well fnd

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