centralizer


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centralizer

[′sen·tra‚līz·ər]
(mathematics)
The subgroup consisting of all elements which commute with a given element of a group.
(petroleum engineering)
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References in periodicals archive ?
If there are positive numbers m, n, such that (m + n)[phi]([T.sup.2]) = m[phi](T)T + nT[phi](T)for any T [member of] T, then [phi] is a centralizer.
Theorem 2 states that the centralizer of the action of [S.sub.[infinity]] on [bar.[V.sup.[cross product]k] inside the set of bounded endomorphisms is the algebra [U.sub.k] used in [AO08].
So, when C is a unital category which is algebraically cartesian closed, any subobject u has a centralizer [[zeta].sub.u].
The centralizer of g [member of] G is [C.sub.G](g) = {x [member of] G | xg = gx} and the conjugacy class of g is ConjG(g) = {xg[x.sup.-1] | x [member of] G}.
Eccentric wear mechanism in polymer well is analyzed, hydraulic self-sealing non-leakage pump is designed according to hydraulic sealing theory; in order to solve the eccentric wear and original sealing efficiently, centralizer and original sealing ring are added to this pump.
The following result is a direct consequence of the characterization of the centralizer of permutations previously discussed.
A few examples indicate the scope of the problem: DiLorenzo's own article on Lincoln as "The Great Centralizer" appeared in the The Independent Review in 1998, not in 1988 (p.
The centraliser's single piece construction eliminates the risk of failure associated with welded bow to end band type designs, and this coupled with precise manufacturing enables the centralizer sub to rotate within the centraliser at minimal torque values.
Not only did the war lay the foundation for eventual nullification or weakening of basic constitutional protections against central government abuses, but it also laid to rest the great principle enunciated in the Declaration of Independence that 'Governments are instituted among Men, deriving their just powers from the consent of the governed.' The Real Lincoln contains irrefutable evidence that a more appropriate title for Abraham Lincoln is not the Great Emancipator, but the Great Centralizer."
BJ Tubular Services is currently carrying out a two-year contract to provide the operator with well services, including casing and tubing running, hydro hammer conductor driving services, centralizer and float equipment supply on the Jade Field.

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