No TPTP formula. May not be expressible in strict first order. | Merge.kif 1921-1921 | Nonnegative real number is a subclass of real number |
No TPTP formula. May not be expressible in strict first order. | Merge.kif 1932-1932 | Positive real number is a subclass of nonnegative real number |
No TPTP formula. May not be expressible in strict first order. | Merge.kif 1976-1976 | Nonnegative integer is a subclass of nonnegative real number |