An orthogonal basis is a basis whose distinct vectors are orthogonal. Its vectors are nonzero by independence, but need not have unit length. Coordinates can be extracted independently: if $v=\sum_j c_ju_j$, then $c_j=\langle u_j,v\rangle/\|u_j\|^2$.
Parents
Like how this is organised?
Build your own knowledge tree on knowen.md: notes, decisions and tasks in one connected markdown graph, shared with your team and your AI agents.