# Rhea Section for MA 511 Professor De la Mora, Spring 2013

We will start with the definition of a matrix. An $mx n$ matrix $A$ over the reals, is an arrangement of real numbers in a table with $m$ rows and $n$ columns.

Let us consider for example the $2x3$

$A=\begin{bmatrix}2&4e^{2}&0\\5&-1&\sqrt{\pi}\\\end{bmatrix}$.

• Hello! This is the Rhea team. Perhaps you meant 2014 instead of 2013? Let us know if you want us to help you make the change. We are happy to help. --Rhea

## Alumni Liaison

Abstract algebra continues the conceptual developments of linear algebra, on an even grander scale.

Dr. Paul Garrett