The associativity rule in pathwise functional It\^o calculus
  In this paper we establish the associativity property of the pathwise It\^o integral in a functional setting for continuous integrators. Here, associativity refers to the computation of the It\^o differential of an It\^o integral, by means of the intuitive cancellation of the It\^o differential and integral signs. 
Alexander Schied and Iryna Voloshchenko
math.PR math.FA