Virgil
Posts:
8,833
Registered:
1/6/11


Re: What is a projection of an ntuple?
Posted:
Jan 24, 2013 7:37 PM


In article <op.wrfmerxl0vm3y5@peter7xmgui5wz>, "Peter Percival" <peterxpercival@hotmail.com> wrote:
> Writing <...> for an ordered ntuple; is the second projection of <x,y,z> > y or <y>?
A projection is usually considered to be any linear map from some linear space to some subspace of itself which is an identity map on that subspace. 

