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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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cylinder hone
centralizer - PlanetMath

The centralizer of ,an element, a ∈ G is defined to be the set C ⁢ ( a ) = { x ∈ G ∣ x ⁢ a = a ⁢ x } Observe that, by ,definition,, e ∈ C ⁢ ( a ) , and that if x , y ∈ C ⁢ ( a ) , then x ⁢ y - 1 ⁢ a = x ⁢ y - 1 ⁢ a ⁢ ( y ⁢ y - 1 ) = x ⁢ y - 1 ⁢ y ⁢ a ⁢ y - 1 = x ⁢ a ⁢ y - 1 = a ⁢ x ⁢ y - 1 , so that x ⁢ y - 1 ∈ C ⁢ ( a ) .

Centralizers Normalizers Stabilizers and Kernels

Definition, We de ne the center of a group G as Z(G) = C G(G) and note that it is the set of elements of G which commute with all other elements. ,Definition, Given a group G and ;6= A G, we de ne for g 2G, gAg 1 = fgag 1 j a 2Ag. Further, we de ne the normalizer of A in G to be N G(A) = fg 2G j gAg 1 = Ag.

centralizers in algebra

A centralizer in an algebra is also called a commutant. This terminology is mostly used in algebras of operatorsin functional analysis. Let Rbe a ring (or an algebra). For every ordered pair,(a,b)of, elements of R, we can define the, additive commutatorof (a,b)to, be the element a⁢b-b⁢a, written [a,b].

What does centralizer mean? - definitions

centralizer (Noun), A device used to centralize a piece of equipment., centralizer (Noun) (of an element in a group) The set of elements of the same group which commute with the element. See also normalizer.

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