Deletion of Mathematical jargon

Comment: Completely unsourced and thus not |verifiable. The statement that these particular phrases are not technical terms but are designed to "distinguish the insider from the neophyte," currently rests entirely on the authority of the article's editors. Because it is unsourced, it is difficult for the reader to verify which entries are accurate. For example, I say that "back-of-the-envelope" is an example of an inaccurate entry; it is used by physicists and engineers, not mathematicians. But since no source is given, you have no way to judge whether I, or the article, is the more trustworthy
Stance: delete
Cited policy: Wikipedia:Verifiability (WP:V)