**Defining terms in [[Matrices|Matrix]] math**
# Scalar
Just a simple number.
$5$
$\pi$
Those are all scalars.
# Vectors
A simple list of numbers, can be vertical or horizontal.
$
\begin{pmatrix}
a & b & c
\end{pmatrix}
$
$
\begin{pmatrix}
a \\ b \\ c
\end{pmatrix}
$
These are both Vectors.
# Matrix
A vector that may have more than one dimension (note: Vectors are also [[Matrices]]).
$
\begin{pmatrix}
a & b \\
c & d \\
\end{pmatrix}
$
$
\begin{pmatrix}
a & b & c \\
d & e & f \\
\end{pmatrix}
$
That's a matrix.
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## Source
## Related
- [[Matrices]]