On vector norm

1- norm ：

That is, the sum of the absolute values of each element of the vector .

2- norm ：

That is, the square sum of each element of the vector and then the square root

p- norm ：

The general form of the above two norms , That is, the absolute value of each element of the vector p The power and Of 1/p The next power

∞ norm ：

That is, the maximum absolute value of each element of the vector

-∞ norm ：

That is, the minimum absolute value of each element of the vector