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In this case the derived closure operations Th ○ Mod (mapping S0 to Th(Mod(S0))) and Mod ○ Th (understood analogously) on S and T respectively deliver the set of first-order consequences of S0 and the set of all models verifying all the sentences verified by every M ∈ T0.
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But it is far from fully abstract; probably one should think of it as an operational semantics, describing how a sentence is verified rather than whether it is true.
Then an argument from set S of sentences to conclusion A is valid iff any interpretation that actually verifies S actually verifies A. (Here, a set S of sentences is actually verified just if all of its members are actually verified).
According to the logical positivists, the meaning of a sentence is given by an account of the experiences on the basis of which the sentence could be verified.
In the view of the logical positivists, this contact consists of the method by which a meaningful sentence can be empirically verified.
The sentence could not immediately be verified, but reports from the center, which acts as a clearinghouse for human-rights reports from across China, have proved accurate in the past.
Once all positive and negative words are identified in a sentence and their local context is verified, a combining process is performed in order to obtain the final sentiment value.
In the 1920s and '30s the logical positivists, and later the noncognitivists, declared that metaphysical and theological (as well as ethical and aesthetic) sentences are literally meaningless because they cannot be verified through sense experience.
We manipulated predictability of target words in sentences to investigate at what point in time after visual onset expectations about upcoming stimuli are verified.
The first is verificationism, according to which a (declarative) sentence is meaningful just in case its truth value can be verified.
Essentially, one has to "guess" a set of sentences Ξ, and then verify that it satisfies the definition of an extension.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com