In May 2026, delivered key lag-term support in the Irksome component to correctly handle terms evaluated at the start of a timestep, updated the replace utility to skip lagged terms, and added Stefan problem tests to validate behavior. These changes improve numerical stability and correctness for lag-aware simulations in Stefan-type problems.

Month: 2026-03. Focused on improving robustness and initialization efficiency of numerical stage value steppers in the Irksome project, with concrete tests to ensure correctness across bases and higher degrees. Delivered a targeted enhancement and validated via unit tests, contributing to more reliable simulations and faster, more predictable startup behavior in numerical methods.

September 2025: Focused on elevating visualization for extruded meshes in firedrake. Delivered multi-layer plotting with full layer representation, improved visuals for movie generation through tripcolor shading tweaks, and added explicit errors to clarify unsupported visualizations. The work strengthens usability for researchers handling complex simulations and enhances plotting reliability across edge cases.