Chinese︱Feedback︱Save this page

Login︱Register

• Elaborating Academic Views 　　　　 • Exchanging Innovative Ideas
• Protecting Intellectual Properties 　　• Fast Sharing Science Papers

Sponsored by the Center for Science and Technology Development of the Ministry of Education
Supervised by Ministry of Education of the People's Republic of China

Home > Papers > Ring-Theory

There are 21 papers published in subject: > since this site started.

Results per page:

21 Total, 3 Pages | 1 2 3 Next > Last >>

Select Subject

All (8831)

Agronomy (158)

Animal Husbandry,... (64)

Aquatic Science (16)

Astronomy (36)

Aviation (22)

Basic Medicine (184)

Biology (504)

Chemical Engineering (103)

Chemistry (635)

Civil and Archite... (105)

Clinical Medicine (236)

Computer Science ... (924)

Dynamic and Elect... (121)

Earth Science (119)

Economics (67)

Education (31)

Electrics, Commun... (927)

Energy Science an... (67)

Engineering and T... (15)

Environmental Sci... (140)

Food Science and ... (63)

Forestry (36)

Hydraulic Enginee... (40)

Mechanics (240)

Metallurgical Eng... (32)

Mine Engineering ... (38)

Nuclear Science a... (21)

Pharmacy (98)

Physics (920)

Preventive Medici... (37)

Psychology (20)

Security Science ... (17)

Sports Science (6)

Surveying and Map... (15)

Textile Science a... (16)

Traditional Chine... (56)

Transportation En... (57)

Rank

Results per page:

21 Total, 3 Pages | 1 2 3 Next > Last >>

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.


	1. Principally Small Injective Rings
	Xiang yueming
	Mathematics 20 September 2010
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:A right ideal I of a ring R is small in case for every proper right ideal K of R, K + I ≠ R. A right R-module M is called PS-injective if every R-homomorphism f : aR → M for every principally small right ideal aR can be extended to R → M. A ring R is called right PS-injective if R is PS-injective as a right R-module. We develop, in this article, PS-injectivity as a generalization of P-injectivity and small injectivity. Many characterizations of right PS-injective rings are studied. In light of these facts, we get several new properties of a right GPF ring and a semiprimitive ring in terms of right PS-injectivity. Related examples are given as well
	TO cite this article:Xiang yueming. Principally Small Injective Rings[OL].[20 September 2010] http://en.paper.edu.cn/en_releasepaper/content/4386202


	2. A Note on the w-Global Transform of Mori Domains
	Wang Fanggui
	Mathematics 11 January 2010
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let R be a domain and let R^{wg} be the w-global transform of R. In this note it is shown that if R is a Mori domain, then the t-dimension formula t-dim(R^{wg})=t-dim(R)-1 holds.
	TO cite this article:Wang Fanggui. A Note on the w-Global Transform of Mori Domains[OL].[11 January 2010] http://en.paper.edu.cn/en_releasepaper/content/38734

Saved Papers

Saved Papers


	3. Trivial Maximal 1-Orthogonal Subcategories For Auslander\
	Huang Zhaoyong ,Zhang Xiaojin
	Mathematics 05 June 2009
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let Λ be an Auslander\
	TO cite this article:Huang Zhaoyong ,Zhang Xiaojin . Trivial Maximal 1-Orthogonal Subcategories For Auslander\[OL].[ 5 June 2009] http://en.paper.edu.cn/en_releasepaper/content/32883


	4. Frobenius morphisms and stable module categories of repetitive algebras
	Deng Bangming,Wan Jinkui
	Mathematics 24 November 2006
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let $k$ be the algebraic closure of a finite field and let $A$ be a finite dimensional $k$-algebra with a Frobenius morphism $F:A\to A$. In the present paper we establish a relation between the stable module category of the repetitive algebra of $A$ and that of the repetitive algebra of the fixed-point algebra $A^F$. As an application, we provide an alternative proof of [4. Theorem 5.4].
	TO cite this article:Deng Bangming,Wan Jinkui. Frobenius morphisms and stable module categories of repetitive algebras [OL].[24 November 2006] http://en.paper.edu.cn/en_releasepaper/content/9895


	5. Multipartite Entanglement of a Tetrahedron Lattice
	Zhang Rong ,Zhu Shiqun ,Hao Xiang
	Mathematics 14 March 2006
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Three dimensional Heisenberg model in the form of a tetrahedron lattice is investigated. The concurrence and multipartite entanglement are calculated through 2-concurrence $C$ and 4-concurrence $C_4$. The concurrence $C$ and multipartite entanglement $C_4$ depend on different coupling strengths $J_i$ and are decreased when the temperature $T$ is increased. For a symmetric tetrahedron lattice, the concurrence $C$ is symmetric about $J_1$ when $J_2$ is negative while the multipartite entanglement $C_4$ is symmetric about $J_1$ when $J_2<2$. For a regular tetrahedron lattice, the concurrence $C$ of ground state is $\frac{1}{3}$ for ferromagnetic case while $C=0$ for antiferromagnetic case. However, there is no multipartite entanglement since $C_4 =0$ in a regular tetrahedron lattice. The external magnetic field $B$ can increase the maximum value of the concurrence $C_B$ and induce two or three peaks in $C_B$. There is a peak in the multipartite entanglement $C_{4B}$ when $C_{4B}$ is varied as a function of the temperature $T$. This peak is mainly induced by the magnetic field $B$
	TO cite this article:Zhang Rong ,Zhu Shiqun ,Hao Xiang . Multipartite Entanglement of a Tetrahedron Lattice[OL].[14 March 2006] http://en.paper.edu.cn/en_releasepaper/content/5697


	6. System Efficiency vs. Individual Performance in Adaptive Competing Systems
	Gou Chengling
	Mathematics 13 March 2006
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:This paper addresses the issue of the relation between the system efficiency and the individual performance with in adaptive competing systems. The adaptive competing systems are modeled by mix-game model which is an extension of minority game (MG). In mix-game, there are two groups of agents; group 1 plays the majority game, but the group 2 plays the minority game. The average winnings of agents can represent the average individual performance and the volatility of a system can represent the efficiency of the system. It is found the correlations between the average winnings of agents and the means of local volatilities are different when agent history memories change under their different configurations. This paper also gives some suggestions for designing complex competing systems.
	TO cite this article:Gou Chengling. System Efficiency vs. Individual Performance in Adaptive Competing Systems[OL].[13 March 2006] http://en.paper.edu.cn/en_releasepaper/content/5647


	7. Generalized Tilting Modules With Finite Injective Dimension
	Huang Zhaoyong
	Mathematics 28 February 2006
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let $R$ be a left noetherian ring, $S$ a right noetherian ring and $_RU$ a generalized tilting module with $S={\rm End}(_RU)$. The injective dimensions of $_RU$ and $U_S$ are identical provided both of them are finite. Under the assumption that the injective dimensions of $_RU$ and $U_S$ are finite, that the subcategory $\{ {\rm Ext}_S^n(N, U)\|N$ is a finitely generated right $S$-module$\}$ is submodule closed is characterized equivalently. From which, a negative answer to a question posed by Auslander in 1969 is given. Finally, some partial answers to Wakamatsu Tilting Conjecture are given.
	TO cite this article:Huang Zhaoyong. Generalized Tilting Modules With Finite Injective Dimension[OL].[28 February 2006] http://en.paper.edu.cn/en_releasepaper/content/5432


	8. Theoretical and experimental study on two-dimensional binary locally resonant phononic crystals
	Wang Gang,Wen Jihong,Liu Yaozong,Wen Xisen
	Mathematics 13 January 2006
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:The theoretical prediction of a locally resonant band gap in two-dimensional binary phononic crystals is verified experimentally. Numerical simulations show that the in-plane subfrequency gap exists in the thin plate of phononic crystal is much wider than that in the bulk of phononic crystal. Theoretical analysis shows that this is due to the different pure shearing/compressing module ratios in the thin plate and the bulk. The band gap edges as well as the mid-gap attenuations of finite samples are studied with different filling fractions, elastic parameters and densities of host medium. Vibration experiments are conducted with two thin plates of two-dimensional binary locally resonant phononic crystal, which are with and without holes respectively. The measured subfrequency gaps are in good agreement with the theoretical predictions.
	TO cite this article:Wang Gang,Wen Jihong,Liu Yaozong, et al. Theoretical and experimental study on two-dimensional binary locally resonant phononic crystals[OL].[13 January 2006] http://en.paper.edu.cn/en_releasepaper/content/4997


	9. On $n$-semihereditary Rings and $n$-coherent Rings
	Xiaoxiang Zhang,Jianlong Chen
	Mathematics 14 November 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let $R$ be a ring. For fixed positive integer $n$, $R$ is said to be left $n$-semihereditary in case every $n$-generated left ideal is projective. $R$ is said to be weakly $n$-semihereditary if each $n$-generated left (and/or right) ideal is flat. Some properties of $n$-semihereditary rings, respectively, weakly $n$-semihereditary rings and $n$-coherent rings are investigated. It is also proved that $R$ is left $n$-semihereditary if and only if it is left $n$-coherent and weakly $n$-semihereditary, if and only if the ring of $n\times n$ matrices over $R$ is left 1-semihereditary if and only if the class of all $n$-flat right $R$-modules form the torsion-free class of a torsion theory. $R$ is left semihereditary if and only if it is left $n$-semihereditary for all positive integers $n$.
	TO cite this article:Xiaoxiang Zhang,Jianlong Chen. On $n$-semihereditary Rings and $n$-coherent Rings[OL].[14 November 2005] http://en.paper.edu.cn/en_releasepaper/content/3631


	10. Homological properties of modules characterized by matrix
	Xiaoxiang Zhang,Jianlong Chen
	Mathematics 26 January 2005
	Show/Hide Abstract \| Cite this paper︱Full-text: PDF (0 B)

	Abstract:Let R be a ring and A an $\beta\times\alpha$ matrix over R, where $\alpha$ and $\beta$ are two card numbers. We investigate some homological properties of modules over R by matrices. Thus, $(\alpha, \beta)$-injective (resp., $(\alpha, \beta)$-flat) modules and $(\alpha, \beta)$-coherent rings are introduced and investigated. Some known results on generalized injective (resp., projective, flat) modules as well as ($\pi$-)coherent rings are extended.
	TO cite this article:Xiaoxiang Zhang,Jianlong Chen. Homological properties of modules characterized by matrix[OL].[26 January 2005] http://en.paper.edu.cn/en_releasepaper/content/1503

	Check out RSS, or use RSS reader to subscribe this item