[Tony Robbin] was a founder of Pattern Painting, showing widely in the United States and Europe with this school, and committed, as were his colleagues, to the lyric fusion of color and the intellectual understanding of the symmetries of pattern, as in the vast tradition of Oriental arts. ...
... Robbin began to think more about his paintings as four dimensional knot diagrams:the flowing sheets are really hyperplanes that have not only thickness but an internal structure as well. The hyperplanes braid in ways that are impossible in three dimensions but are the natural consequences of projecting higher-dimensional structures into lower dimensional spaces.