| (subclass Number Quantity) | Merge.kif 1824-1824 | 子類 Number and Quantity |
| (subclass RealNumber Number) | Merge.kif 1891-1891 | 子類 RealNumber and Number |
| (subclass ImaginaryNumber Number) | Merge.kif 1899-1899 | 子類 ImaginaryNumber and Number |
| (subclass ComplexNumber Number) | Merge.kif 2008-2008 | 子類 ComplexNumber and Number |
| (subclass MultipoleVariable Number) | engineering.kif 289-289 | 子類 多極變量 and Number |
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