ISO 10303-51:2005

ISO/IS 10303-51:2005 specifies the integrated resource Mathematical representation. ISO 10303-51 constrains the use of the concepts of mathematical value that are defined by ISO 10303-50. The uses are specified as follows: that a real or integer number identifies a physical quantity instance, or a product, activity or state;that a mathematical space is the range of an an identification function for a physical quantity space, or a set of products, activities or states; that mathematical function describes a property variation over a continuous or discrete domain.