A Listed_product_space is a Product_space that has each of its factor instances of Maths_space listed in an instantiation of this part of ISO 10303.
NOTE - A Uniform_product_space can be instantiated as a Listed_product_space. In this case, each of the factor instances of Maths_space is referenced separately in a list, even though each is the same.
EXPRESS specification:
*) ENTITY Listed_product_space SUBTYPE OF (Product_space); factors : LIST [1,?] OF Maths_space; END_ENTITY; (*
Attributes:
factors: The instances of Maths_space that are the factors of the Product_space.