x²+y²+z²≤r²

x²+y²+z²≤r²

2026
Acrylic, charcoal pencil and pastel pencil on cotton canvas with gummed kraft tape
46 × 46 × 2 cm
RT4A-2606-0201
Courtesy of the artist

x²+y²+z²≤r² is the equation of a solid ball: every point whose distance from the centre is at most r. The other canvases of the series I began in January 2026 take the catalogue number of their source; this one takes a definition. I gave the formula a body, a sphere and its cast shadow on acid yellow, on the only square canvas of the series.