Hey Firedrakers, I am interested in solving an integro-differential equation, with the integral occurring in only one direction, and differentiation in the other directions. Has anyone done something like this using Firedrake? I would be using an extruded mesh, with extrusion occurring in the direction of integration. If so, is a there a reference or tutorial available? I have attached a description of the problem. Any help would be greatly appreciated! Regards, Chris Eldred -- Chris Eldred https://www.math.univ-paris13.fr/~eldred/ Postdoctoral Fellow, LAGA, University of Paris 13 PhD, Atmospheric Science, Colorado State University, 2015 DOE Computational Science Graduate Fellow (Alumni) B.S. Applied Computational Physics, Carnegie Mellon University, 2009 chris.eldred@gmail.com