Talk:Conical combination

Usage beyond the reals
The lead paragraph defines a conical combination in terms of a real vector space as a[n effectively] linear combination with real coefficients of a finite number of vectors.

However, Coin problem links here and uses the phrase "an integer conical combination", which – if this article is to be its explanation – requires a broader (more general) definition: one in which neither the vectors nor the scalar coefficients are restricted to real values, but potentially come from any vector space and any field respectively. This leaves us with two questions:
 * 1) Do the cited sources restrict the vector space and scalar field to reals?
 * 2) Can we find reliable sources for a more general usage as required by the present "Coin problem" article?

I don't have the references cited in the lead, so can't immediately answer the first question. Given time, I may be able to attempt answers to both. But don't wait on me! yoyo (talk) 08:30, 23 March 2018 (UTC)