Class: E60.Number

comment: "This class comprises any encoding of computable (algebraic) values such as integers, real numbers, complex numbers, vectors, tensors etc., including intervals of these values to express limited precision. Numbers are fundamentally distinct from identifiers in continua, such as instances of E50 Date and E47 Spatial Coordinate, even though their encoding may be similar. Instances of E60 Number can be combined with each other in algebraic operations to yield other instances of E60 Number, e.g., 1+1=2. Identifiers in continua may be combined with numbers expressing distances to yield new identifiers, e.g., 1924-01-31 + 2 days = 1924-02-02. Cf. E54 Dimension. Examples: 5 (this number is of datatype int), 3+2i (this is a complex number and can be represented by ints and strings), 1.5e-04, (0.5, -0.7, 88) (the result of this computation is a float number but the expression is treated like a string of CIDOC CRM because of its brackets)." (string)

http://erlangen-crm.org/091125/E60.Number