product
<math xmlns="http://www.w3.org/1998/Math/MathML"> <apply> <csymbol cd="arith1">product</csymbol> <apply> <csymbol cd="interval1">integer_interval</csymbol> <ci>a</ci> <ci>b</ci> </apply> <bind> <csymbol cd="fns1">lambda</csymbol> <bvar> <ci>x</ci> </bvar> <apply> <ci>f</ci> <ci>x</ci> </apply> </bind> </apply> </math>
Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)