In complex path integration there is the following fundamental inequality
$$ \left\vert \int_\gamma f(z) dz \right\vert \leq \mathcal{L} \left( \gamma\right) \cdot \max \left\lbrace\left\vert f \left( z \right) \right\vert : z \in \gamma^*\right\rbrace $$
where $\mathcal{L} \left( \gamma\right)$ denotes the length of $\gamma$ and $\gamma^\star$ denotes its image.
In German, this inequality is often referred to as the Standardabschätzung, which could literally be translated to "standard estimate". Is this a commonly used translation or is there another name in the English literature for this estimate?
It is called the "Estimation Lemma" or the "M L inequality" (for the M and the L appearing in there). See
https://en.wikipedia.org/wiki/Estimation_lemma
PS: Not to be confused with the other typical use of the abbreviation "M L" which often refers to Maximum Likelihood, and corresponding estimates.