Ize and Vignoli set out to explain equivariant analysis in as simple terms as possible to non-specialist applied mathematicians and graduate students: those they figure can use it most but are least apt to have a background in the technical areas that treatments of the topic are usually immersed within. They managed to attain the simplicity of matrices, and require readers to travel that far to meet them. They cover preliminaries, equivariant degree, equivariant homotopy groups of spheres, and applications. Appendices cover equivariant matrices and periodic solutions of linear systems.