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Questions about the properties of vector spaces and linear transformations, including linear systems in general.

4 votes
0 answers
188 views

Slices of Simplices that are Simplices, Reference?

I am trying to find a reference for the following fact. It is elementary and not hard to prove, but I haven't been able to find the question treated anywhere. Let $A$ be an $l\times n$ matrix with i …
chris seaton's user avatar