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Topic: What is a projection of an n-tuple?
Replies: 11   Last Post: Jan 26, 2013 11:52 AM

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Registered: 1/6/11
Re: What is a projection of an n-tuple?
Posted: Jan 24, 2013 7:37 PM
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In article <op.wrfmerxl0vm3y5@peter-7xmgui5wz>,
"Peter Percival" <> wrote:

> Writing <...> for an ordered n-tuple; 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

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