The WWCA 2016 is a sattelite workshop of ISSAC'2016 and is intended to provide a forum for researchers and practitioners in the area of computer algebra. This workshop is devoted to the 70th birthday of Sergei Abramov (CCAS, Moscow, Russia) whose influential contributions to symbolic methods are highly acknowledged and adopted by many Computer Algebra systems.

The purpose of this workshop is to present some recent developments in the area of symbolic summation and symbolic integration, ordinary differential equations, difference equations, partial differential equations and their applications in combinatorics, number theory, particle physics, etc. It is also to highlight the current state of the art in both - complexity analysis of summation and integration algorithms, and improvements in the complexity of aforementioned algorithms.