Topology
Count vertices, edges and faces, then compare local angle defects with the total curvature of a mesh.
Each exhibit connects an interactive mathematical model with a derivation and a reproducible experiment.
Count vertices, edges and faces, then compare local angle defects with the total curvature of a mesh.
Represent a sampled contour with complex Fourier coefficients and measure the error caused by discarding frequencies.
Compare geodesic triangles in a plane, on a sphere and in the Poincaré disk using each model’s own metric.
Follow square-root and logarithm values along a circular path, and compare continuation with a selected single-valued branch.
Compare nearby Lorenz trajectories and separate sensitivity to initial conditions from numerical discretization error.
Calculate graph Laplacian eigenmodes and use them to follow heat diffusion through a weighted network.