Sentence examples for doubtful logical from inspiring English sources
Their doubtful logical status led in the nineteenth century to their abandonment and replacement by the limit concept.
The rapid development of mathematical analysis in the 18th century had not concealed the fact that its underlying concepts not only lacked rigorous definition, but were even (e.g., in the case of differentials and infinitesimals) of doubtful logical character.
Etchemendy's claim is perhaps defensible under a conception of logical truth as analyticity simpliciter, but certainly doubtful on more traditional conceptions of logical truth, on which the predicate "is a logical truth" is not even a logical expression.
It does not, however, distinguish logical empiricism from logical positivism, and it is doubtful that any principled such boundary can be drawn along doctrinal or sociological lines.
It is doubtful that many people come to believe in God because of logical arguments, as opposed to their upbringing or having "heard a call".
Moreover, the negation of ψ is not a logical truth (ψ has a model), and it's doubtful that the negation of ψ is a logical consequence of any set of necessary truths of the appropriately restricted types.
But it is doubtful such rules can suffice to specify a single, uniquely qualified support function based only on logical structure.
