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Free Entropy Dimensions of Some von Neumann Algebras
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作者 王敬华 《Northeastern Mathematical Journal》 CSCD 2007年第5期444-452,共9页
In this paper, we estimate the free entropy dimension of the group yon Neumann algebra L(Zt), which is less than 1/t,2 ≤t ≤ +∞. This data is identical with the free dimension defined by Dykema.
关键词 free entropy free entropy dimension yon Neumann algebra
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Entropy change-induced elastic softening of lithiated materials
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作者 Fuqian Yang 《Theoretical & Applied Mechanics Letters》 CAS CSCD 2015年第6期255-257,共3页
To understand the "elastic softening" of Li-Si alloys for the development of Li-ion batteries, the effect of stress-induced change of entropy on the mechanical properties of lithiated materials is examined within th... To understand the "elastic softening" of Li-Si alloys for the development of Li-ion batteries, the effect of stress-induced change of entropy on the mechanical properties of lithiated materials is examined within the theories of thermodynamics and linear elasticity, An approach is presented whereby the change of Gibbs free energy is governed by the change of the mixture entropy due to stress-induced migration of mobile atoms, from which the contribution of the change of the mixture entropy to the apparent elastic modulus of lithiated materials is determined. The reciprocal of the apparent elastic modulus of a lithiated material is a linear function of the concentration of mobile Li-atoms at a stress-free state and the square of the mismatch strain per unit mole fraction of mobile Li-atoms. 展开更多
关键词 Apparent modulus free energy entropy change Lithium-ion battery
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A modified version of free orbit-dimension of von Neumann algebras
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作者 HADWIN Don LI WeiHua 《Science China Mathematics》 SCIE 2011年第11期2329-2346,共18页
Based on the notion of free orbit-dimension of Hadwin-Shen (2007) we introduce a new invariant for finite von Neumann algebras with arbitrarily large generating sets and acting on Hilbert spaces of arbitrary dimension... Based on the notion of free orbit-dimension of Hadwin-Shen (2007) we introduce a new invariant for finite von Neumann algebras with arbitrarily large generating sets and acting on Hilbert spaces of arbitrary dimension. We show that this invariant is independent of the generating set, and we extend results in Hadwin-Shen (2007) to this larger class of algebras. 展开更多
关键词 von Neumann algebras free entropy dimension free orbit dimension
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Some Results on Inner Quasidiagonal C^*-algebras
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作者 Qi Hui LI Rui WANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2020年第10期1094-1106,共13页
In the current article,we prove the crossed product C^*-algebra by a Rokhlin action of finite group on a strongly quasidiagonal C^*-algebra is strongly quasidiagonal again.We also show that a just-infinite C^*-algebra... In the current article,we prove the crossed product C^*-algebra by a Rokhlin action of finite group on a strongly quasidiagonal C^*-algebra is strongly quasidiagonal again.We also show that a just-infinite C^*-algebra is quasidiagonal if and only if it is inner quasidiagonal.Finally,we compute the topological free entropy dimension in just-infinite C^*-algebras. 展开更多
关键词 Inner quasidiagonal C*-algebras crossed product C*-algebras strongly quasidiagonal C^*-algebras just-infinite C^*-algebras topological free entropy dimension
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