Talk:Union of Inverses of Mappings is Inverse of Union of Mappings

Merger with Preimage of Union under Mapping/Family of Sets
Unless I'm mistaken, Preimage of Union under Mapping/Family of Sets is at most a direct corollary to this theorem. Is this what is intended by the merge recommendation? --Keith.U (talk) 12:18, 2 July 2016 (UTC)


 * Difficult to tell. Links are needed to the concepts invoked. In particular, clarification as to exactly what is meant by the "inverse of a union of a family of mappings" -- inverse of mapping needed, union of family of mappings needed.


 * Also worth noting that the structuring of this area is suboptimal: the parent page concerns the inverses of two relations, this one is about the inverses of any arbitrary family of mappings. --prime mover (talk) 12:30, 2 July 2016 (UTC)


 * Would it be wise to create a definition page for the union of functions? When functions are considered as a set of ordered pairs, the definition is clear. However, many readers might be unfamiliar with this concept.


 * Thanks for the note on the structuring. I'll restructure shortly. --Keith.U (talk) 09:51, 3 July 2016 (UTC)