Hi, I would like to use the spectral (hp) tetrahedral elements proposed in the paper below: "A NEW TRIANGULAR AND TETRAHEDRAL BASIS FOR HIGH-ORDER (hp) FINITE ELEMENT METHODS, SPENCER J. SHERWIN AND GEORGE EM KARNIADAKIS, INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, VOL. 38, 3775-3802 (1995) I believe that I most probably saw in the UFL documentation that this element formulation was already implemented. However, I am not able to track that documentation down now. Can you kindly help me with how I may implement this element in Firedrake? Thanks -- Abhishek Venketeswaran NETL Research Associate - ORISE National Energy Technology Laboratory Department of Energy abhishek.venketeswaran@netl.doe.gov Work: 412-386-4833 Mobile: 716-507-7890 www.netl.doe.gov<http://www.netl.doe.gov> [cid:9f512d72-18a5-491c-b5bd-71b2da00af09]