Symbols:L/Natural Logarithm

Natural Logarithm

$\ln$

The (natural) logarithm of $x$ is the real-valued function defined on $\R_{>0}$ as:

$\ds \forall x \in \R_{>0}: \ln x := \int_1^x \frac {\d t} t$

The $\LaTeX$ code for \(\ln\) is \ln .

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): ln
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): ln