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【期刊论文】Topological treatments of some results on invariant ideals
吴志强, Chi-Keung Ng
,-0001,():
-1年11月30日
In this short article, we will give several results concerning closed invariant ideals of crossed products using some "topological arguments".
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【期刊论文】THE Ext-FUNCTOR FOR THE CATEGORY OF COMPLETELY 5 BOUNDED COMODULES
吴志强, CHI-KEUNG NG
International Journal of Mathematic1s Vol.16, No.3 (2005) 1-26,-0001,():
-1年11月30日
In this article, we will give the definition of the Ext-functor for the category MS of 13 (completely bounded) counital right S-comodules (where S is a counital Hopf C*-algebra that is either unital or nuclear) using the derived functor approach. Moreover, we will give a brief discussion on the injective objects in M15 S.
Hopf C*, -algebras, Ext-functor, injective objects, cohomology theory.,
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【期刊论文】Some permanence properties of C*-unique groups☆
吴志强, Chi-Wai Leung a, * and Chi-Keung Ng b
Journal of Functional Analysis ■(■■■■) ■■■-■■■,-0001,():
-1年11月30日
We will study some permanence properties of C*-unique groups in details. In particular, normal subgroups and extensions will be considered. Among other interesting results, we prove that every second countable amenable group with an injective finite-dimensional representation (not necessarily unitary) is a retract of a C*-unique group. Moreover, any amenable discrete group is a retract of a discrete C*-unique group.
C*, -unique groups, Amenable groups, Induced representations
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【期刊论文】Regular normed bimodules
吴志强, Chi-Keung Ng*
,-0001,():
-1年11月30日
In this article, we will give a chara+M40cterization of Banach bimodules over C*-algebras of compact operators that arises from operator spaces as well as a characterization of (F)-Banach bundles amongst all (H)-Banach bundles over a hyper-Stonian space. These two characterizations are concerned with whether certain natural map from a Banach bimodule to its canonical bidual is isometric (we call such bimodule regular).
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【期刊论文】Profinite quantum groups
吴志强, Chi-Keung Ng*
Math. Nachr. 254-255, 197-217 (2003),-0001,():
-1年11月30日
Compact quantum groups,, profinite groups,, inductive limits,, subfactors
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