«بعض الإنسان ليس بأسود»
Some humans are not black.
“Some” makes the quantity particular, while “is not” makes the judgment negative. It is therefore a particular negative. It does not say that no humans are black; it denies blackness only of part of the class.
A non-personal example is “Some numbers are not even”: there exist numbers not falling under the predicate even. This too is particular negation.
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Categorical Propositions: Singular, Natural, Quantified and Indefinite Forms
«بعض الإنسان ليس بأسود»
Some humans are not black.
“Some” makes the quantity particular, while “is not” makes the judgment negative. It is therefore a particular negative. It does not say that no humans are black; it denies blackness only of part of the class.
A non-personal example is “Some numbers are not even”: there exist numbers not falling under the predicate even. This too is particular negation.