Linear algebra

Matrix

Multidimensional array

4x2 Matrix or $\mathbb {R}$^4x2 A = ${\begin{bmatrix}2&5\\12&15\\243&52\\43&14\end{bmatrix}}$

Where counting starts is defined by the programming language used. Python starts counting a 0. In python use arrays to define a matrix.

A_0,1 = 2
A_2,2 = 52

Vector

A nx1 matrix. In python is is advised to use a one-dimensional array (to be tested)

4 dimensional vector $\mathbb {R}$⁴ A = ${\begin{bmatrix}8\\112\\23\\73\end{bmatrix}}$

Arithmetics m1 = ${\begin{bmatrix}2&5\\12&5\\2&2\\3&4\end{bmatrix}}$

m2 = ${\begin{bmatrix}3&1\\3&3\end{bmatrix}}$

m1 + m2