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Algorithmic convergence upon spatial and temporal refinement. The panel is discretized in space with n×n×12 tetrahedral elements, (n+1)×(n+1)×3 nodes, and (n+1)×(n+1)×12 degrees of freedom, where n is increased from 8 to 44. The activation sequence is discretized in time with 40 to 975 equidistant finite difference steps. Both spatial and temporal discretization converge smoothly towards a finite activation time.
