Well-founded relation
= Well-founded relation
{wiki}
= Well-foundedness
{synonym}
= Well-founded
{synonym}
A relation $r$ on $X$ is well-founded when every nonempty subset of $X$ contains an element with no $r$-predecessor in that subset.
= Well-founded relation
{wiki}
= Well-foundedness
{synonym}
= Well-founded
{synonym}
A relation $r$ on $X$ is well-founded when every nonempty subset of $X$ contains an element with no $r$-predecessor in that subset.