${\displaystyle {}{\binom {n}{k}}={\frac {n!}{k!(n-k)!}}\,}$

definiert.

${\displaystyle G\colon M\longrightarrow L,}$

die jedes Element ${\displaystyle {}y\in M}$ auf das eindeutig bestimmte Element ${\displaystyle {}x\in L}$ mit ${\displaystyle {}F(x)=y}$ abbildet, heißt die Umkehrabbildung zu ${\displaystyle {}F}$.

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

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

definiert.

${\displaystyle \varphi \colon \mathbb {R} \longrightarrow \mathbb {R} }$

${\displaystyle {}x\in \mathbb {R} }$

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

${\displaystyle {}\delta >0}$

${\displaystyle {}\varphi {\bigl (}]x-\delta ,x+\delta [{\bigr )}\subseteq ]\varphi (x)-\epsilon ,\varphi (x)+\epsilon [\,}$

gilt.

${\displaystyle {}v_{1},\ldots ,v_{n}}$

${\displaystyle \sum _{i=1}^{n}a_{i}v_{i}=0}$

nur bei ${\displaystyle {}a_{i}=0}$ für alle ${\displaystyle {}i}$ möglich ist.

${\displaystyle {}\varphi }$

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

${\displaystyle {}e=\lim _{n\rightarrow \infty }{\left(1+{\frac {1}{n}}\right)}^{n}\,}$

definiert.

${\displaystyle {}s}$

${\displaystyle {}[0,2]}$

${\displaystyle {}\pi }$

${\displaystyle {}\pi$ :=2s\,.}