Notes Published: November 07, 2022Teaching NotesResearch NotesThese are some notes I have used in either my teaching or research. I plan to add to them when I have the time. I offer no guarantee that they are error-free!TeachingA proof of Simpson’s ruleThe nonlinear pendulumA brief introduction to PDEsResearchThe Casimir effect using Euler-Maclaurin summationConstruction of solutions to the linearised Einstein field equations