期刊文献+
共找到352篇文章
< 1 2 18 >
每页显示 20 50 100
Role of Complements and Immunoglobulins in Duchenne Muscular Dystrophy 被引量:1
1
作者 Sanjeev Kumar Reena Mittal +1 位作者 Sweety   Depp Chand Jain 《Open Journal of Applied Sciences》 2014年第6期323-346,共24页
Muscular dystrophies are myopathies and tend to progressive, with ongoing degeneration and regeneration of muscle fibers. Spinal muscular atrophy (SMA), amyotrophic lateral sclerosis (ALS) and polio myelitis are essen... Muscular dystrophies are myopathies and tend to progressive, with ongoing degeneration and regeneration of muscle fibers. Spinal muscular atrophy (SMA), amyotrophic lateral sclerosis (ALS) and polio myelitis are essentially diseases of the anterior horn cells of the spine. It has been reported in literature that humoral immunity is manifested by the antibodies production. These are special chemical substances that react against foreign body. Antibodies are serum proteins, which are immunoglobulins and possess antibody activity and are classified according to antigens and stimulate their production such as IgA, JgG, IgM, IgD and IgE. All the immunological parameters such as of C3, C4, IgG, IgM and IgA, which are measured in Duchenne muscular dystrophy go down in comparison to healthy subjects. Complement C3 and Complement C4 go down about 44.3% and 78.57% respectively from the normal values. The serum IgG, IgM and IgA levels were also go down about 65%, 84% and 99.56% respectively in comparison to healthy subjects. A trend between all the immunoglobulins has been set up and it is rAG.M > rMA.G. > rGM.A, while we have a trend in DMD cases is rMA.G. > rAG.M > rGM.A We are in a position to say that our data have a relevance of high authenticity and reliability to accept that there is a deficit in immunity in DMD cases. The deficit in immunity may be a cause to damage muscle for abnormal functioning. 展开更多
关键词 complements IMMUNOGLOBULINS DUCHENNE MUSCULAR DYSTROPHY Regression COEFFICIENTS Multiple Correlation COEFFICIENTS
下载PDF
Cross-Cultural Analysis on Complements
2
作者 刘恒 《海外英语》 2014年第13期182-183,共2页
Nativized varieties of English must reflect native pragmatic norms and cultural conventions.Complements,as a polite social behavior,is analyzed from the perspective of Chinese English speaker and American English spea... Nativized varieties of English must reflect native pragmatic norms and cultural conventions.Complements,as a polite social behavior,is analyzed from the perspective of Chinese English speaker and American English speaker to emphasize the importance of the cross-cultural differences in pragmatic uses. 展开更多
关键词 complements AMERICAN ENGLISH SPEAKER CHINESE Engli
下载PDF
The Case-agreement System in Subjunctive Complements
3
作者 Feras Saeed 《宏观语言学》 2016年第1期52-79,共28页
Unlike matrix verbs, the verb in subjunctive complements in Standard Arabic lacks tense; nonetheless, it inflects for agreement and mood. The subject of subjunctive verbs is Case-marked accusative if it surfaces in a ... Unlike matrix verbs, the verb in subjunctive complements in Standard Arabic lacks tense; nonetheless, it inflects for agreement and mood. The subject of subjunctive verbs is Case-marked accusative if it surfaces in a preverbal position; and nominative if it appears in a postverbal position. In addition, the subjunctive verb shows agreement asymmetry with its subject, depending on the position of the subject. Subjunctive complements appear in tenseless contexts in this language, i.e. control structures, ECM-like structures, and obviative structures. In this paper, I provide a new analysis for subject-verb agreement asymmetry in these complements and account for the different Case markers that appear on their subject. In particular, I argue that feature-specification on the inflectional head T triggers the verbal agreement asymmetry in subjunctive complements. I also argue that formal features and nominative Case in these complements can be valued by a defective probe. Crucially, I argue that the defective probe can establish agreement and assign nominative Case in-situ, without resorting to A-movement, and the subsequent movement of the embedded subject to a preverbal position is triggered by the EPP feature on the O-complete T. The corollary of this investigation lends support to the assumption that the Case-agreement system in this language is not contingent on tense. 展开更多
关键词 SUBJUNCTIVE complements DEFECTIVE probes AGREEMENT CASE Standard ARABIC
下载PDF
Role of Complements and Immunoglobulins in Alzheimer’s Disease
4
作者 Sanjeev Kumar Reena Mittal +1 位作者 Shweta Chaudhary Depp Chand Jain 《Open Journal of Applied Sciences》 2014年第6期285-298,共14页
Our findings show that the value of IgG in serum of Alzheimer’s Disease patients is (17.2059 ± 2.6317) g/l and in controls i.e. (17.6720 ± 3.1457) g/l. Values of IgM in AD patients go down up to 62.5% in co... Our findings show that the value of IgG in serum of Alzheimer’s Disease patients is (17.2059 ± 2.6317) g/l and in controls i.e. (17.6720 ± 3.1457) g/l. Values of IgM in AD patients go down up to 62.5% in comparison to healthy subjects. A sudden change was observed in the levels of IgA of AD patients. It has been put on the value 137.9% high in comparison to healthy subjects. The levels of complement C3 have also value of lower side and go down up to 52.66% in AD patients. The value of levels of complement C4 shows no deflection from the control values. On the basis of regression and multiple correlation analysis, we found that the partial correlation coefficients rGA.M, which has value 0.44815 in AD patients and 0.45555 in controls, do not show any resemblance. The multiple partial correlation rAM.G has value 0.3082 in AD patients and 0.3912 in controls slightly better correlated in comparison to healthy controls. Multiple RA.MG has strongly correlation in comparison to controls. RM.AG is also strongly correlated. Regression coefficients and regression equations are basic foundations of correlation measurements and show a specific character of variation. A relation between all the three multiple correlations has been established in the present work and it is given by the following relation RA.MG > RM.AG > RG.AM. 展开更多
关键词 complements IMMUNOGLOBULINS Alzheimer’s DISEASE Regression COEFFICIENTS Multiple Correlation COEFFICIENTS
下载PDF
Analysis of immunoglobulin, complements and CRP levels in serum of captive northern pig-tailed macaques (Macaca leonina) 被引量:8
5
作者 Xiao-Liang ZHANG Wei PANG +3 位作者 De-Yao DENG Long-Bao LV Yue FENG Yong-Tang ZHENG 《Zoological Research》 CAS CSCD 北大核心 2014年第3期196-203,共8页
The northem pig-tailed macaque (NPM, Macaca leonina) has become a widely used animal model in biomedical research. In this study, we measured serum immunoglobulin IgG, IgM, IgA, complement C3, C4 and CRP levels in 3... The northem pig-tailed macaque (NPM, Macaca leonina) has become a widely used animal model in biomedical research. In this study, we measured serum immunoglobulin IgG, IgM, IgA, complement C3, C4 and CRP levels in 3-11 year old captive northem pig-tailed macaques using HITACHI 7600-20 automated chemistry analyzer in order to determine the influences of age and gender on these items. The results showed that serum IgA, IgM, C3 and C4 levels were not correlated with age (P〉0.05), while serum IgG levels increased progressively with age (r=0.202; P=0.045). Serum IgG, IgA, IgM and C3 levels were higher in females than in males (P〈0.05). Moreover, serum C3 concentration was both positively and strongly correlated with that of C4 (r=0.700; P〈0.0001). This study provides basic serum immunoglobulin and complement data of captive northem pig-tailed macaques, which may prove useful for future breeding efforts and biomedical research. 展开更多
关键词 Northern pig-tailed macaque (Macaca leonina) IMMUNOGLOBULIN Complement C-reactive protein
下载PDF
Complements are involved in alcoholic fatty liver disease, hepatitis and fibrosis 被引量:5
6
作者 Cheng-Jie Lin Zhi-Gao hu +2 位作者 Guan-Dou Yuan Biao Lei Song-Qing he 《World Journal of Hepatology》 CAS 2018年第10期662-669,共8页
The complement system is a key component of the body's immune system. When abnormally activated, this system can induce inflammation and damage to normal tissues and participate in the development and progression ... The complement system is a key component of the body's immune system. When abnormally activated, this system can induce inflammation and damage to normal tissues and participate in the development and progression of a variety of diseases. In the past, many scholars believed that alcoholic liver disease(ALD) is induced by the stress of ethanol on liver cells, including oxidative stress and dysfunction of mitochondria and protease bodies, causing hepatocyte injury and apoptosis. Recent studies have shown that complement activation is also involved in the genesis and development of ALD. This review focuses on the roles of complement activation in ALD and of therapeutic intervention in complement-activation pathways. We intend to provide new ideas on the diagnosis and treatment of ALD. 展开更多
关键词 ALCOHOLIC LIVER disease COMPLEMENT system proteins COMPLEMENT regulator LIVER cells HEPATOCYTE injury
下载PDF
On the ordering of the Kirchhoff indices of the complements of trees and unicyclic graphs 被引量:1
7
作者 CHEN Xiao-dan HAO Guo-liang JIN De-quan 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2020年第3期308-320,共13页
The Kirchhoff index Kf(G) of a graph G is defined to be the sum of the resistance distances between all pairs of vertices of G. In this paper, we develop a novel method for ordering the Kirchhoff indices of the comple... The Kirchhoff index Kf(G) of a graph G is defined to be the sum of the resistance distances between all pairs of vertices of G. In this paper, we develop a novel method for ordering the Kirchhoff indices of the complements of trees and unicyclic graphs. With this method, we determine the first five maximum values of Kf■ and the first four maximum values of Kf(ū),where ■ and ū are the complements of a tree T and unicyclic graph U, respectively. 展开更多
关键词 Kirchhoff index TREE unicyclic graph COMPLEMENT ORDERING
下载PDF
On the Property of Cubic Complements
8
作者 郭亚梅 张洪奎 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2007年第3期459-464,共6页
Let n be any positive integer, and S(n) be the cubic complements of n. The main purpose of this paper is to study the asymptotic of ∑n≤x(n/S(n))^k (k ≥ 1). And by using the elementary methods, it intends to... Let n be any positive integer, and S(n) be the cubic complements of n. The main purpose of this paper is to study the asymptotic of ∑n≤x(n/S(n))^k (k ≥ 1). And by using the elementary methods, it intends to give two sharper asymptotic formulas, and thus extends the related conclusions. 展开更多
关键词 cubic complement reciprocal mean value asymptotic formula
下载PDF
Different serum levels of IgG and complements and recurrence rates in IgG4-positive and negative lacrimal gland benign lymphoepithelial lesion
9
作者 Rui Liu Nan Wang +4 位作者 Jin-Jin Wang Jing Li Xin Ge Jing-Xue Zhang Jian-Min Ma 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第6期876-883,共8页
·AIM:To analyze the differences in immune indicators and prognosis between Ig G4-positive and negative lacrimal gland benign lymphoepithelial lesion(LGBLEL).·METHODS:This was a single-center retrospective cl... ·AIM:To analyze the differences in immune indicators and prognosis between Ig G4-positive and negative lacrimal gland benign lymphoepithelial lesion(LGBLEL).·METHODS:This was a single-center retrospective clinical study including 105 cases of Ig G4-positive LGBLEL and 41 cases of Ig G4-negative LGBLEL.Basic information,related indicators of peripheral venous blood samples using immunoscattering turbidimetry,treatment(partial surgical excision and glucocorticoid therapy)and prognosis(recurrence and death)were collected.Survival curves for recurrence were created using the Kaplan-Meier analysis.Univariate analysis and multivariate regression analysis were used to analyze prognostic factors.·RESULTS:The mean age was 50.10±14.23y and 44.76±11.43y(P=0.033)in Ig G4-positive and negative group respectively.The serum C3 and C4 was lower in Ig G4-positive group(P=0.005,P=0.002),while the serum Ig G and Ig G2 was higher in Ig G4-positive group(P=0.000 and P=0.008).Twenty-one cases had recurrence in Ig G4-positive group and 3 cases recurrence in Ig G4-negative group.The 5-year recurrence-free cumulative percentages of Ig G4-positive group was 81.85%,and 83.46%in the Ig G-negative group(P=0.216).The history of preoperative glucocorticoid therapy,serum C4,Ig G1 and Ig G2 were the factors affecting recurrence in Ig G4-positive group,while serum C4,and Ig G1 were the factors affecting recurrence of LGBLEL.·CONCLUSION:Serum C4 and Ig G1 are the factors affecting recurrence of LGBLEL,while the Ig G4 does not affect recurrence of LGBLEL. 展开更多
关键词 benign lymphoepithelial lesion lacrimal gland IGG4 COMPLEMENT PROGNOSIS
下载PDF
On Chromatic Polynomials of Complements of All Wheels with Any Missing Consecutive Spokes * 被引量:2
10
作者 郝荣霞 刘彦佩 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2003年第4期579-585,共7页
In this paper, a new method has been used to calculate the chromatic polynomials of graphs. In particular, the chromatic polynomials of complements of all wheels with any missing consecutive spokes are given.
关键词 chromatic polynomial WHEELS complement.
下载PDF
ON INNERπ'-CLOSED GROUPS AND NORMAL π-COMPLEMENTS 被引量:2
11
作者 王晓峰 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1989年第3期323-331,共9页
In this paper, the author classifies the finite inner π′-closed groups, and proves the following results1. If each proper subgroup K of a group G is weak π-homogeneous and weak π′-homogeneous, then G is a Schmidt... In this paper, the author classifies the finite inner π′-closed groups, and proves the following results1. If each proper subgroup K of a group G is weak π-homogeneous and weak π′-homogeneous, then G is a Schmidt group, or a direct product of two Hall subgroups.2. If G is a weak π-homogeneous group, then G is π′-closed if one of the following statements is true: (1)Each π-subgroup of G is 2-closed. (2) Each π-subgroup of G is 2′-closed.3. Let G be a group and π be a set of odd primes. If N_G(Z(J(P))) has a normal π-completement for a Sytow p-subgroup of G with prime ρ in π then so does G. 展开更多
关键词 SUBGROUP statements complements ON INNER SOLVABLE maximal 七公 LEMMA holds proof
原文传递
Complement-dependent neuroinflammation in spinal cord injury:from pathology to therapeutic implications
12
作者 Hassan Saad Bachar El Baba +10 位作者 Ali Tfaily Firas Kobeissy Juanmarco Gutierrez Gonzalez Daniel Refai Gerald R.Rodts Christian Mustroph David Gimbel Jonathan Grossberg Daniel L.Barrow Matthew F.Gary Ali M.Alawieh 《Neural Regeneration Research》 SCIE CAS 2025年第5期1324-1335,共12页
Spinal cord injury remains a major cause of disability in young adults,and beyond acute decompression and rehabilitation,there are no pharmacological treatments to limit the progression of injury and optimize recovery... Spinal cord injury remains a major cause of disability in young adults,and beyond acute decompression and rehabilitation,there are no pharmacological treatments to limit the progression of injury and optimize recovery in this population.Following the thorough investigation of the complement system in triggering and propagating cerebral neuroinflammation,a similar role for complement in spinal neuroinflammation is a focus of ongoing research.In this work,we survey the current literature investigating the role of complement in spinal cord injury including the sources of complement proteins,triggers of complement activation,and role of effector functions in the pathology.We study relevant data demonstrating the different triggers of complement activation after spinal cord injury including direct binding to cellular debris,and or activation via antibody binding to damage-associated molecular patterns.Several effector functions of complement have been implicated in spinal cord injury,and we critically evaluate recent studies on the dual role of complement anaphylatoxins in spinal cord injury while emphasizing the lack of pathophysiological understanding of the role of opsonins in spinal cord injury.Following this pathophysiological review,we systematically review the different translational approaches used in preclinical models of spinal cord injury and discuss the challenges for future translation into human subjects.This review emphasizes the need for future studies to dissect the roles of different complement pathways in the pathology of spinal cord injury,to evaluate the phases of involvement of opsonins and anaphylatoxins,and to study the role of complement in white matter degeneration and regeneration using translational strategies to supplement genetic models. 展开更多
关键词 COMPLEMENT NEUROINFLAMMATION NEUROPLASTICITY regeneration spinal cord injury targeted therapy
下载PDF
Repetitive traumatic brain injury–induced complement C1–related inflammation impairs long-term hippocampal neurogenesis
13
作者 Jing Wang Bing Zhang +9 位作者 Lanfang Li Xiaomei Tang Jinyu Zeng Yige Song Chao Xu Kai Zhao Guoqiang Liu Youming Lu Xinyan Li Kai Shu 《Neural Regeneration Research》 SCIE CAS 2025年第3期821-835,共15页
Repetitive traumatic brain injury impacts adult neurogenesis in the hippocampal dentate gyrus,leading to long-term cognitive impairment.However,the mechanism underlying this neurogenesis impairment remains unknown.In ... Repetitive traumatic brain injury impacts adult neurogenesis in the hippocampal dentate gyrus,leading to long-term cognitive impairment.However,the mechanism underlying this neurogenesis impairment remains unknown.In this study,we established a male mouse model of repetitive traumatic brain injury and performed long-term evaluation of neurogenesis of the hippocampal dentate gyrus after repetitive traumatic brain injury.Our results showed that repetitive traumatic brain injury inhibited neural stem cell proliferation and development,delayed neuronal maturation,and reduced the complexity of neuronal dendrites and spines.Mice with repetitive traumatic brain injuryalso showed deficits in spatial memory retrieval.Moreover,following repetitive traumatic brain injury,neuroinflammation was enhanced in the neurogenesis microenvironment where C1q levels were increased,C1q binding protein levels were decreased,and canonical Wnt/β-catenin signaling was downregulated.An inhibitor of C1 reversed the long-term impairment of neurogenesis induced by repetitive traumatic brain injury and improved neurological function.These findings suggest that repetitive traumatic brain injury–induced C1-related inflammation impairs long-term neurogenesis in the dentate gyrus and contributes to spatial memory retrieval dysfunction. 展开更多
关键词 complement C1 dendrite dentate gyrus hippocampus neural stem cell NEUROGENESIS NEUROINFLAMMATION neurological function neuron traumatic brain injury
下载PDF
On infinite additive complements
14
作者 FANG JinHui CHEN YongGao 《Science China Mathematics》 SCIE CSCD 2017年第10期1779-1790,共12页
Two infinite sequences A and B of non-negative integers are called infinite additive complements if their sum contains all sufficiently large integers. For a sequence T of non-negative integers, let T(x) be the numb... Two infinite sequences A and B of non-negative integers are called infinite additive complements if their sum contains all sufficiently large integers. For a sequence T of non-negative integers, let T(x) be the number of terms of T not exceeding x. In 1994, Sarkozy and Szemer′edi confirmed a conjecture of Danzer by proving that, for infinite additive complements A and B, if lim sup A(x)B(x)/x 1, then A(x)B(x)-x → +∞ as x → +∞. In this paper, it is proved that, if A and B are infinite additive complements with lim sup A(x)B(x)/x〈(√4 + 2)/7 = 1.093 …, then(A(x)B(x)-x)/min{A(x), B(x)} → +∞ as x → +∞. 展开更多
关键词 additive complements SEQUENCES counting functions
原文传递
Effects of Chinese Medicine Shen-Fu Injection(参附注射液)on the Expression of Inflammatory Cytokines and Complements during Post-Resuscitation Immune Dysfunction in A Porcine Model 被引量:28
15
作者 张茜 李春盛 +1 位作者 王烁 顾伟 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2016年第2期101-109,共9页
Objective:To investigate the action of Shen-Fu Injection(参附注射液,SFI) in regulating the expression of the serum complements and inflammatory cytokines synthesized and released in response to the stress of global... Objective:To investigate the action of Shen-Fu Injection(参附注射液,SFI) in regulating the expression of the serum complements and inflammatory cytokines synthesized and released in response to the stress of global ischemia accompanying cardiac arrest(CA) and resuscitation.Methods:Thirty pigs were randomly divided into the sham(n=6) and 3 returns of spontaneous circulation(ROSC) groups(n=24).After 8-min untreated ventricular fibrillation and 2-min basic life support,24 pigs of the ROSC groups were randomized into three groups(n=8 per group),which received central venous injection of SFI(SFI group),epinephrine(EP group),or saline(SA group).Hemodynamic status and blood samples were obtained at 0,0.5,1,2,4,6,12,and 24 h after ROSC.Results:Serum concentrations of specific activation markers of the complement system C3,C4 and C5b-9 were increased during cardiopulmonary resuscitation th rough1 24 h after ROSC.There were intense changes of various pro-inflammatory cytokines and anti-inflammatory cytokines as early as 0.5 h after CA.Compared with the EP and SA groups,SFI treatment reduced the proinflammatory cytokines levels of interleukin(IL)-6,IL-8and tumor necrosis factor α(TNF-α,P〈0.05),and increased the anti-inflammatory cytokine levels of IL-4 and IL-10(P〈0.05).Further,SFI treatment decreased the values of C3,C4 and C5b-9 compared with the EP and SA groups.Conclusions:SFI,derived from the ancient Chinese medicine,has significant effects in attenuating post-resuscitation immune dysfunction by modulating the expression of complements and cytokines levels.The current study provided an experimental basis for the clinical application of a potential pharmacologic target for post resuscitation immune dysfunction. 展开更多
关键词 cardiac arrest complement activation cytokines immune dysfunction
原文传递
The diffeomorphic types of the complements of arrangements in CP^3Ⅱ 被引量:1
16
作者 YAU Stephen S-T 《Science China Mathematics》 SCIE 2008年第4期785-802,共18页
For any arrangement of hyperplanes in CP^3,we introduce the soul of this arrangement. The soul,which is a pseudo-complex,is determined by the combinatorics of the arrangement of hyper- planes.In this paper,we give a s... For any arrangement of hyperplanes in CP^3,we introduce the soul of this arrangement. The soul,which is a pseudo-complex,is determined by the combinatorics of the arrangement of hyper- planes.In this paper,we give a sufficient combinatoric condition for two arrangements of hyperplanes to be diffeomorphic to each other.In particular we have found sufficient conditions on combinatorics for the arrangement of hyperplanes whose moduli space is connected.This generalizes our previous result on hyperplane point arrangements in CP^3. 展开更多
关键词 arrangement of HYPERPLANES SOUL of arrangement combinational geometry of arrangement differential and TOPOLOGICAL structure of COMPLEMENT of arrangement
原文传递
Compatibility and Schur Complements of Operators on Hilbert C~*-Module
17
作者 Xiaochun FANG Jing YU 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2011年第1期69-88,共20页
Let E be a Hilbert C*-module,and Y be an orthogonally complemented closed submodule of E.The authors generalize the definitions of Y-complementability and Y-compatibility for general(adjointable) operators from Hil... Let E be a Hilbert C*-module,and Y be an orthogonally complemented closed submodule of E.The authors generalize the definitions of Y-complementability and Y-compatibility for general(adjointable) operators from Hilbert space to Hilbert C*-module,and discuss the relationship between each other.Several equivalent statements about Y-complementability and Y-compatibility,and several representations of Schur complements of Y-complementable operators(especially,of Y-compatible operators and of positive Y-compatible operators) on a Hilbert C*-module are obtained.In addition,the quotient property for Schur complements of matrices is generalized to the quotient property for Schur complements of Y-complementable operators and Y*-complementable operators on a Hilbert C*-module. 展开更多
关键词 Hilbert C*-module Compatibility Complementability Schur complement Quotient property
原文传递
ON RELATIVE NORMAL COMPLEMENTS IN FINITE GROUPS
18
作者 郭秀云 《Chinese Science Bulletin》 SCIE EI CAS 1992年第23期1943-1946,共4页
All groups considered in this note are finite. Let π be a set of some primes and π′ the complementary set of primes, π(G) denotes the set of primes dividing the order |G| of a group G.
关键词 RELATIVE NORMAL COMPLEMENT π-soivable group NORMAL π-complement
原文传递
General H-matrices and their Schur complements
19
作者 Cheng-yi ZHANG Fengmin XU +1 位作者 Zongben XU Jicheng LI 《Frontiers of Mathematics in China》 SCIE CSCD 2014年第5期1141-1168,共28页
The definitions of θ-ray pattern proposed to establish some new results matrix and θ-ray matrix are firstly on nonsingularity/singularity and convergence of general H-matrices. Then some conditions on the matrix A ... The definitions of θ-ray pattern proposed to establish some new results matrix and θ-ray matrix are firstly on nonsingularity/singularity and convergence of general H-matrices. Then some conditions on the matrix A ∈ C^n×n and nonempty α (n) = {1,2,... ,n} are proposed such that A is an invertible H-matrix if A(α) and A/α are both invertible H-matrices. Furthermore, the important results on Schur complement for general H-matrices are presented to give the different necessary and sufficient conditions for the matrix A E HM and the subset α C (n) such that the Schur complement matrix A/α∈ HI^n-|α| or A/α ∈ Hn-|α|^M or A/α ∈ H^n-| α|^S. 展开更多
关键词 Schur complement CONVERGENCE general H-matrices
原文传递
Homology Groups of Simplicial Complements
20
作者 Jun MA Feifei FAN Xiangjun WANG 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2016年第5期683-690,共8页
This paper deals with homology groups induced by the exterior algebra generated by the simplicial compliment of a simplicial complex K. By using ech homology and Alexander duality, the authors prove that there is a du... This paper deals with homology groups induced by the exterior algebra generated by the simplicial compliment of a simplicial complex K. By using ech homology and Alexander duality, the authors prove that there is a duality between these homology groups and the simplicial homology groups of K. 展开更多
关键词 homology duality algebra simplex proof topological exterior integer inflation complement
原文传递
上一页 1 2 18 下一页 到第
使用帮助 返回顶部