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Quasi-varieties: A special access
Studia Logica, 2004The aim of this paper is to construct theories as the syntactical tools for modelling partial algebras by certain functors, analogous to Lawvere's categorical varietal approach. The theories chosen for this purpose are quasivarieties. Unfortunately, the definitions are too lengthy and technical to reproduce here, but I can mention the rather surprising
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Specialization across Varieties and North–South Competition
2009Analyzing a new database that makes it possible to disaggregate trade flows across many countries according to unit values, we show that international specialization in terms of quality within industries and product categories plays an important role in the dynamics of North-South competition.
Fontagné, Lionel +2 more
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Special Varieties and Classification Theory: An Overview
Acta Applicandae Mathematica, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Computing projective equivalences of special algebraic varieties
Journal of Computational and Applied Mathematics, 2020Michal Bizzarri +2 more
exaly
Special Corn Varieties for Special Uses, Possibility
The Science News-Letter, 1934openaire +1 more source