2-ring - meaning and definition. What is 2-ring
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What (who) is 2-ring - definition


2-ring         
In mathematics, a categorical ring is, roughly, a category equipped with addition and multiplication. In other words, a categorical ring is obtained by replacing the underlying set of a ring by a category.
J-2 ring         
COMMUTATIVE RING SUCH THAT, FOR EVERY FINITELY GENERATED ALGEBRA OVER IT, THE SET OF REGULAR POINTS IN ITS SPECTRUM IS OPEN
J-1 ring; J-0 ring; J0 ring; J1 ring; J2 ring
In commutative algebra, a J-0 ring is a ring R such that the set of regular points, that is, points p of the spectrum at which the localization R_p is a regular local ring, contains a non-empty open subset, a J-1 ring is a ring such that the set of regular points is an open subset, and a J-2 ring is a ring such that any finitely generated algebra over the ring is a J-1 ring.
Bundesstraße 2 R         
FEDERAL HIGHWAY IN GERMANY
Bundesstraße 2R; Mittlerer Ring; Mittleren Ring
The Bundesstraße 2R is a German federal highway (German: Bundesstraße) in Bavaria. It runs as a ring road within the city of Munich in Bavaria, is long, and is the most traffic-prone road in Germany.