Contents

# Contents

## Definition

Given an index set I and a matrix $A = (A_{i j})_{i,j \in I}$, a principal submatrix of $A$ is a matrix of the form $(A_{i j})_{i,j \in I'}$ for $I' \subset I$ some subset.

Created on April 23, 2021 at 15:00:22. See the history of this page for a list of all contributions to it.