## Elementary Linear Algebra 7th Edition

$$S=\{(1,0,0,0), (0,1,0,0),(0,0,1,0), (0,0,0,1)\}.$$
The standard basis of $R^4$ is the following set of vectors $$S=\{(1,0,0,0), (0,1,0,0),(0,0,1,0), (0,0,0,1)\}.$$