P-226/A, Acrylic on canvas, 1978, 130cm x 130cm

The graph of the 4-d hyper-cube (32 lines) is randomly divided into 4 parts of 8 lines each.
The four parts a,b,c,d are then ordered as a magic square: the horizontal, vertical and diagonal
directions in a square grid add up to the complete graph of the 4-d hyper-cube.