Deletion of Complex.h

Comment: I agree with nom that this is material for a reference manual. "#MANUAL" says that wikipedia is not an ''instruction'' manual. To me, a lot of Wikipedia is not so much ''an'' encyclopedia as a whole set of interlinked ''specialist'' encyclopedias. The distinction between a specialist encyclopedia and a reference book is often less clear. I'm not sure whether this material is better here or on Wikibooks, but at present the distinction seems to be that Wikibooks contains the ''instruction'' manual and tutorials, while Wikipedia contains the ''reference'' manual. That doesn't seem unreasonable and I don't see any strong reason to transwiki this whole series of articles, which would be a lot of work and would certainly be too major a change to decide here
Stance: keep
Cited policy: Wikipedia:What Wikipedia is not (WP:NOT)