The notation used in this article is very non-standard. Even the Wikipedia article that is being referenced doesn't use to denote the angular part of the polar form. This appears to be some kind of vector function equivalent to the exponential form, so why not just use it? Additionally, typically lowercase letters are used for the variables, but this is partially a preference thing.
The more import issue is how poor the LaTeX appears throughout the document, as well as being generally inconsistent. The first part about "Notation" should define what the variables are referring to, what set they are part of (real or complex) and not have multiple equations on the same line directly next to each other, as this is confusing.Horep (discuss • contribs) 07:45, 31 May 2020 (UTC)