The properties of Arp's shape can be expressed as integers.
This work is a loop. There are six concaved bents and convex caves. You can further draw more complicated curved bents using 8 circles. The next work can be created by rotating a mirror image of the initial shape and adding three loops. The content of Arp's works is geometric properties which can be expressed as an integer. As property of shape can be quantified just by looking at it, you can combine several shapes. This is the basis for logical thinking. The shape-science is the candidate of Universal Grammar.