Given a commutative ring A equipped with a preordering A + (in the most general sense, see below), we look for a fractional ring extension (= “ring of quotients” in the sense of Lambek et al. [L]) as big as possible such that A + extends to a preordering R + of R (i.e. with A ∩ R + = A +) in a natural way. We then ask for subextensions A ⊂ B of A ⊂ R such that A is convex in B with respect to B + : = B ∩ R +.
Positivity – Springer Journals
Published: Sep 26, 2007
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud