(algebra, order theory, ring theory) A ring, R, equipped with a partial order, ≤, such that for arbitrary a, b, c ∈ R, if a ≤ b then a + c ≤ b + c, and if, additionally, 0 ≤ c, then both ca ≤ cb and ac ≤ bc.

plural of thumb-ring

A ring fastened to the guard of a dagger or sword to protect the wielder's hand.

plural of polynomial ring

(algebra) A ring (which is also a commutative algebra), denoted K[X], formed from the set of polynomials (usually of one variable, in a given set, X), with coefficients in a given ring (often a field), K.

Synonym of Landolt C

plural of Landolt ring

A ring (jewellery item) made up of multiple interconnected bands, capable of being taken apart and reassembled.

plural of puzzle ring

plural of vortex ring