Aspects of this piece are related to some of the basic terms used in the branch of mathematics called Set Theory, e.g.: ‘union’, ‘intersection’, ‘difference’, ‘complement’, the ’empty set’, the ‘universal set’, ‘elements’, ‘subsets’, ‘operations’ and ‘groups’. In the first instance the piece involved producing and collating different sets of vertical, horizontal, diagonal, and curved graphic transitions. These were subsequently combined or sequenced by way of different rules that keep the conflict of planes, forms, tonal values and colour foremost.