triangles of power: a silent generative loop. An outline equilateral triangle holds still for 1.8 seconds, then snaps 30 degrees at each beat boundary. Because of its 120 degree symmetry, each snap appears as a 90 degree turn in the opposite direction, cycling four semantic states in order: pipe, pointing right, the world of chained transforms; delta, pointing up, the world of finite differences; apply, pointing left, the world of function application; nabla, pointing down, the world of continuous fields. At every snap the notation of the new calculus erupts from the center and the state name drops into place below the triangle.