The matrix operations of
1. Interchanging two rows or columns,
2. Adding a multiple of one row or column to another,
3. Multiplying any row or column by a nonzero element.
The matrix operations of
1. Interchanging two rows or columns,
2. Adding a multiple of one row or column to another,
3. Multiplying any row or column by a nonzero element.
Weisstein, Eric W. "Elementary Row and Column Operations." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ElementaryRowandColumnOperations.html