Childline show, suggested to the BBC that they create "Childwatch", a programme about child abuse that was screened on 30 October 1986 on BBC1, the aim being to try to detect children at risk before their lives were in danger. Viewers were asked if they would take part in the survey in an edition of "That's Life!". A helpline was opened after the programme so that any child currently suffering abuse could call for help. Rantzen, together with her BBC producers Sarah Caplin and Ritchie Cogan, therefore suggested they should create a helpline specifically for children in danger or distress, to
Well-founded relation context of the natural numbers, this means that the relation <, which is well-founded, is used instead of the relation ≤, which is not. In some texts, the definition of a well-founded relation is changed from the definition above to include this convention. Well-founded relation In mathematics, a binary relation, "R", is called well-founded (or wellfounded) on a class "X" if every non-empty subset "S" ⊆ "X" has a minimal element with respect to "R", that is an element "m" not related by "sRm" (for instance, ""s" is not smaller than "m"") for any "s" ∈ "S". In other words,