composition of f and inverse of f eq identity using <reln>
<math xmlns="http://www.w3.org/1998/Math/MathML"> <apply> <csymbol cd="relation1">eq</csymbol> <apply> <csymbol cd="fns1">left_compose</csymbol> <ci>f</ci> <apply> <csymbol cd="fns1">inverse</csymbol> <ci>f</ci> </apply> </apply> <csymbol cd="fns1">identity</csymbol> </apply> </math>
Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)