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Negative ions of polar molecules
Molecular Physics, 1971The influence of a molecule's dipole moment on its ability to capture an electron into a stable bound state is examined. It is proved that, in the fixednuclei approximation, a value greater than 1ยท625 Debye for the dipole moment suffices to guarantee the existence of a discrete spectrum of negative ion states. Implications for Hartree-Fock calculations
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EvenNegative Polarity Items andOnlyNegative Polarity Items
2013AbstractChapter 3 presents the main thesis of the book: Negative Polarity Items (NPIs) activate obligatorily the alternatives that ordinary indefinites activate optionally (i.e. subject to relevance). Two classes of NPIs are discussed: emphatic (minimizers, even-one/some NPIs) and non emphatic (ever, NP-any, Italian alcun).
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Negative Polar Interrogatives and Bias
2006This paper develops a discourse based approach to negative polar interrogatives (nis). nis are subject to more contextual restrictions than their positive counterparts, a fact that has lead some researchers to assign the two types of question distinct denotations.
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Acquisition of negative polarity items
First Language, 1994Charlotte Koster, Sjoukje Van Der Wal
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Negative polarity and grammatical representation
Linguistics and Philosophy, 1987openaire +1 more source