exponential e
<math xmlns="http://www.w3.org/1998/Math/MathML"> <apply> <csymbol cd="relation1">eq</csymbol> <apply> <csymbol cd="transc1">ln</csymbol> <csymbol cd="nums1">e</csymbol> </apply> <cn>1</cn> </apply> </math>
Author: MathML 2 Recommendation