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16h
reviewed Approve Simpsons Method of Order 4
22h
reviewed Approve Every convex set in $\mathbb R^n$ has a countable and dense subset?
2d
reviewed Approve Chart of Rounds for a Game
2d
reviewed Approve Let the plane V be defined by $ax + by + cz + d = 0$; with $a, b, c, d \in \mathbb{R}$ and the vector $(a; b; c)$ a unit vector.
Aug
27
comment Why should quaternions exist?
@Taemyr, Yes, that is kind of what I meant to say. Thanks for clarifying.
Aug
27
awarded  Guru
Aug
27
awarded  Mortarboard
Aug
27
answered Reducing TIC-TAC TOE State Space by using Symmetry in Artificial Intelligence
Aug
27
awarded  Custodian
Aug
27
reviewed Reject Why should quaternions exist?
Aug
27
awarded  Good Answer
Aug
26
awarded  Nice Answer
Aug
26
revised Why should quaternions exist?
added 1 character in body
Aug
26
comment Why should quaternions exist?
Even though you don't go to university, you can usually still get a library card to check out books. The great thing about a university library is that it is typically very underutilized by the actual students, so a lot of the books look for might be on the shelves. If you google free abstract algebra books, you should find a ton of books released by free online by professors. I can't necessarily vouch for any of them. When I was in school I tended to read a lot of Wikipedia, so that is also a very good internet resource.
Aug
26
revised Why should quaternions exist?
edited body
Aug
26
revised Why should quaternions exist?
edited body
Aug
26
revised Why should quaternions exist?
added 2 characters in body
Aug
26
answered Why should quaternions exist?
Aug
26
answered Is it true that $A \in A$?
Aug
26
answered Orthogonality v. Perpendicularity