${\displaystyle {}x}$

${\displaystyle {}\epsilon \in K}$

${\displaystyle {}\epsilon >0}$

${\displaystyle {}n_{0}\in \mathbb {N} }$

${\displaystyle {}n\geq n_{0}}$

${\displaystyle {}\vert {x_{n}-x}\vert \leq \epsilon \,}$

gilt.

${\displaystyle {}z=a+b{\mathrm {i} }}$

${\displaystyle {}\vert {z}\vert ={\sqrt {a^{2}+b^{2}}}\,}$

definiert.

${\displaystyle {}\varphi }$

${\displaystyle {}\operatorname {rang} \,\varphi =\operatorname {dim} _{}\left(\operatorname {bild} \varphi \right)\,.}$

${\displaystyle {}i\in {\{1,\ldots ,n\}}}$

${\displaystyle {}M_{i}}$

${\displaystyle {}(n-1)\times (n-1)}$

${\displaystyle {}M}$

${\displaystyle {}i}$

${\displaystyle {}M}$

${\displaystyle \det M={\begin{cases}a_{11}\,,&{\text{falls }}n=1\,,\\\sum _{i=1}^{n}(-1)^{i+1}a_{i1}\det M_{i}&{\text{ für }}n\geq 2\,.\end{cases}}}$