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+# Constants 
+{:.no_toc}
+
+<nav markdown="1" class="toc-class">
+* TOC
+{:toc}
+</nav>
+
+## The goal
+
+Numpy provides plenty of constants. 
+
+Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
+
+## [The most important ones](https://numpy.org/doc/stable/reference/constants.html)
+
+|||
+|---|---|
+|numpy.inf​|IEEE 754 floating point representation of (positive) infinity.​|
+|numpy.nan​|IEEE 754 floating point representation of Not a Number (NaN).​|
+|numpy.e​|Euler’s constant, base of natural logarithms, Napier’s constant.​ e = 2.71828182845904523536028747135266249775724709369995...​|
+|**numpy.newaxis**​ | **A convenient alias for None, useful for indexing arrays**​ |
+|numpy.pi​|pi = 3.1415926535897932384626433...​|
+