Notes

Contents: Tokens, tallies and tablets -- The logic of shape -- Notations and numbers -- Lure of the unknown -- Eternal triangles -- Curves and coordinates -- Patterns in numbers -- The system of the world -- Patterns in nature -- Impossible quantities -- Firm foundations -- Impossible triangles -- The rise of symmetry -- Algebra comes of age -- Rubber sheet geometry -- The fourth dimension -- The shape of logic -- How likely is that? -- Number crunching -- Chaos and complexity