CAM Digest, 星期六, 2009年8月22日

Today's Editor:
 
Tao Tang (汤涛)
Hong Kong Baptist University
ttang@hkbu.edu.hk

Xuejun Xu (许学军)
Institute of Computational Mathematics
Chinese Academy of Science
xxj@lsec.cc.ac.cn

====================================================================================
第八届“冯康科学计算奖”评选结果近日在北京揭晓

发件人: "shi zhong-ci" <shi@lsec.cc.ac.cn>
主 题: 冯康科学计算奖

 

The 8th Feng Kang Prize for Scientific Computing
Announcement

The 8th Feng Kang Prize for Scientific Computing has been honored to
Dr.Zhong-Zhi Bai,
Institute of Computational Mathematics, Chinese,Academy of Sciences, China;

Dr. Fa-Lai Chen,
Department of Mathematics,University of Science and Technology of China, China,

Dr. Xue-Cheng Tai,
Department of Mathematics, University of Bergen, Norway

for their significant contributions in numerical linear algebra, computer aided
geometric design, and numerical partial differential equations and scientific computing.

 

Prof. Zhong-Ci SHI

Chairman of the Committee of
Feng Kang Prize for Scientific Computing
Beijing, August 2, 2009
----------------------------------------------------------------------------------------

第八届“冯康科学计算奖”通告


白中治(中国科学院计算数学研究所)、
陈发来(中国科学技术大学数学系)和
台雪成(挪威伯尔根大学数学系)共同荣获本届奖励。

该项奖励旨在表彰他们三位分别在数值线性代数、
计算机辅助几何设计和偏微分方程数值解,
以及在科学计算方面所取得的杰出成就。

石钟慈院士

“冯康科学计算奖”评奖委员会主席

2009年8月2日于北京

 

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冯康独辟蹊径创始辛几何算法

来源:科学时报

20世纪60年代,数学家、我国计算数学事业的主要奠基人和开拓者、中国科学院院士冯康,独立于
西方创始了有限元方法。20世纪80年代,他在花甲之年毅然进入一个应用前景广阔的全新研究领域
——哈密尔顿系统的辛几何算法。是什么促使他作出这一决定呢?

 

在1991年中国物理学会年会上,冯康提出了一些关于动力系统的科学问题:在遥远的未来,
太阳系呈现什么景象?地球会与其他星球相撞吗?他说,也许有人认为,只要利用牛顿定律,按现有
的计算方法编个程序,用超级计算机进行计算,花费足够的时间,总能得到结果。但结果可信吗?
实际上,对这样复杂的计算,计算机或者根本得不出结果,或者得出一个错误的结果。这是计算方法
问题,机器性能再好也无济于事,编程技巧再高也是无能为力的。

动力系统问题不同于椭圆边值问题,有限元方法已不能很好地解决此类问题。应该用什么样
的计算方法来计算动力系统问题呢?冯康在创始有限元方法的过程中已体会到,同一物理过程的
各种等价的数学表述可能导致不等效的计算方法。有限元对椭圆边值问题的成功是因为选择了适
当的力学体系和数学形式。有限元不能很好地解决动态问题则是由于拉格朗日力学体系不能很好
地反映其本质特征。

 

于是,冯康又回到了物理原理。在数学物理方程中列于首位的经典力学方程,有三种等价的数
学形式体系:牛顿力学体系、拉格朗日力学体系和哈密尔顿力学体系。其中,哈密尔顿体系一直是
物理学理论研究的出发点,其应用涉及物理、力学和工程的众多领域。


冯康发现唯有哈密尔顿力学体系才是可供选择的研究动态问题的最适当的力学体系。辛几何
是哈密尔顿体系的数学基础,冯康抓住了设计哈密尔顿系统数值方法的突破口——辛几何方法。
他组织研究队伍对哈密尔顿系统的辛几何算法进行系统的理论研究和广泛的数值实验,经过十余
年的努力,成果丰硕。


现在已知,传统的算法除了少数例外,几乎都不是辛几何算法,因此不可避免地带有人为耗散
性等歪曲体系特征的缺陷。而冯康等人提出的辛几何算法却保持了体系结构,特别是在稳定性与
长期跟踪能力上具有独特的优点,已在我国的动力天文、大气海洋、分子动力学等领域的计算中成
功应用。深入的理论分析和大量的数值实验表明,辛几何算法解决了久悬未决的动力学长期预测
计算问题。


1997年,哈密尔顿系统的辛几何算法获得国家自然科学一等奖。

 

==========================================================================================
北京大学为数学家徐献瑜教授庆贺百岁华诞

来源:北京大学

月31日,我国著名数学家徐献瑜教授的同事、朋友、学生和家人在北京大学英杰交流中心新闻发布厅
欢聚一堂,庆贺他的百岁华诞。

庆祝活动通过播放一幅幅寿星徐献瑜教授的照片再现了他勤奋学习、踏实工作和俭朴生活的画面。
北京大学新闻与传播学院副院长徐泓教授代表父亲徐献瑜先生致感谢辞。庆祝活动由北京大学数学
科学学院副院长张平文教授主持。

出席此次活动的嘉宾还有北京应用物理与计算数学研究所周毓麟院士,北京大学信息科学技术学院
杨芙清院士、何新贵院士,中国科学院计算数学与科学工程计算研究所崔俊芝院士和中国科学院软件
研究所老所长许孔时研究员、董蕴美院士和周巢尘院士等。

座谈中,周毓麟、许孔时和杨芙清、陈堃銶教授等先后发言,回顾了徐献瑜教授在教学和科研方面
开拓奠基性的贡献和高尚的人格品质。杨芙清院士在发言中回忆了徐先生严谨、勤奋、睿智的学术
风范和淡定、从容的为人之道,对徐先生为年轻人开路和把国家事业放在第一位的高贵品质表达了
深深的敬意。徐献瑜先生的学生、旅居海外的李家楷等特意发来贺信,祝贺恩师健康长寿。


座谈结束后,吴志攀教授、周周毓麟院士、杨芙清院士、陈堃銶教授等嘉宾前往北大燕东园看望老寿星。

徐献瑜教授简介:

徐献瑜教授是我国计算数学的开拓者之一,他是我国第一个计算数学学科和我国第一个国家级计算
中心的创建者之一,也是我国第一个“数学软件库”的研制和建立的主持人。他在过去几十年的计算
数学教育和研究生涯中为北京大学,也为我国计算数学和计算机软件学科的建设和人才的培养做出
了卓越的贡献,王选、杨芙清、何新贵等都是他的学生。早年徐献瑜教授曾是东吴大学的高材生,
与费孝通和杨绛同学,后赴美留学,在华盛顿大学获哲学博士学位,成为华盛顿大学第一个获博士
学位的中国留学生。回国后,任燕京大学讲师、数学系主任,辅仁大学讲师。

建国后,历任燕京大学教授、数学系主任,北京大学教授、高等数学教研室和计算数学教研室主任。
上世纪五十年代几度访苏,参加了周恩来总理领导制定的“我国科学发展12年规划”中“计算技术
建立”的规划工作,兼任中国科学院计算技术研究所三室主任;中国科学院计算中心研究员。粉碎
四人帮后,授课之余继续从事科学研究,被推选为全国计算数学学会第一届常务理事、副理事长;
参加化学系徐光宪领导的“串级萃取理论”研究,提供数学模型、算法和数学证明,成功采用计算
机模拟出逆流萃取动态平衡的过程,此项工作1983年获国家教育部一等奖。退休后继续担任《计算
数学》杂志编委,被推选为中国数学软件协会名誉会长。

徐献瑜教授为我国计算数学和计算机软件研究和教育事业,倾注了全部的心血,做出了卓越的
贡献。他作为一名学者,勤于学习,善于思考,力求与时俱进,与时代同步;他注重人才的培养,
甘当人梯,知人善任,恳切让贤,离休以后,仍然主持中国科学院计算中心研究小组工作,关心
中国计算数学事业的发展。95岁高龄,还致力于科普,为中学生写出《由“鹤立鸡群”引出的一
个数学问题》一书。

==========================================================================================
日本计算出圆周率小数点后25769亿位数 创新纪录

来源:中国新闻网

据日本共同社报道,日本筑波大学计算科学研究中心8月17日宣布,该中心使用超级计算机计算
出圆周率小数点后25769.8037亿位数,创下新的世界纪录。此前的纪录为小数点后12411亿位,
2002年由东京大学和日立制作所的共同研究小组计算得出。新纪录提高到2倍以上。筑波大学已
于8月10日申报吉尼斯世界纪录。

该数据由研究中心副教授高桥大介计算出。此次使用的是美国制造、连接640台电脑、最快计算速度
可达每秒95万亿次的超级计算机“T2K筑波系统”,于今年4月分两次进行主要计算和验证计算,
耗时73小时36分。与2002年耗费的约600小时相比,只有其八分之一。

预计计算中使用的部分程序今后将向普通民众公开,高桥称“运用此次成果可以大幅提高物理学
和化学领域的计算速度”。

==========================================================================================
第46批中国博士后科学基金面上资助开始申报

来源:中国博士后科学基金会

中国博士后科学基金会8月19日发布《关于申报第四十六批中国博士后科学基金面上资助的通知》。
第四十六批中国博士后基金面上资助的申报时间仍为8月20日至9月10日。

网上申报与纸质申报同时进行,申请人员登录到中国博士后网,点击进入“中国博士后基金申请系统”,
按申报说明下载申请书,填写后直接上传到中国博士后科学基金会,打印的纸质申请书交设站单位审核。
纸质申请书仍为一式八份,各设站单位将审核盖章后的申请书以快递方式统一邮寄到中国博士后科学基金
会,申报时间以邮戳为准,逾期不再办理。请勿使用包裹邮寄,以免延误申请。

面上资助评审费每人100元,请各设站单位将缴纳评审费的银行回执复印件与本单位评审材料一并寄送
基金会。请在复印件上注明发票台头、回寄地址、邮编、联系人、联系电话等。第一次申报基金的设站
单位,请同时注明本单位用户名、开户行、账号等信息,便于获得资助后及时拨款。

如有问题,请拨打:010-8238-7704、010-62335023。

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13个项目获中美NSFC-NSF数学研究人员交流计划批准

来源:国家自然科学基金委员会

 

2009年度,国家自然科学基金委和美国国家科学基金会在中美数学研究人员交流计划框架下,经过
公开征集与共同评审,批准以下13个项目:

序号 申请人 申请人单位 项目中文名称
1 李学志 信阳师范学院 年龄结构的多菌株传染病模型的持续性与灭绝
2 陈裕群 华南师范大学 组合代数
3 程晋 复旦大学 偏微分方程反问题的理论与算法
4 戴欣荣 中山大学 艺术的数字化鉴定技术
5 方道元 浙江大学 变系数 Fourier 分析及其应用
6 黄文 中国科学技术大学 动力系统中的独立性
7 雷震 复旦大学 弹性复杂流体的数学理论
8 李东升 西安交通大学 偏微分方程的正则性
9 刘张炬 北京大学 中美合作非交换几何课题研究
10 王文胜 华东师范大学 随机场和随机偏微分方程 
11 喻良 南京大学 可计算性与随机性
12 张振跃 浙江大学 高维条件协方差矩阵模型设计及数值计算研究
13 朱仲义 复旦大学 纵向数据的半参数分位数回归

 

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博士后招聘: Postdoc Positions Available at KAUST -- Appointment Starting October 1, 2009

From: Shuyu Sun <shuyu.sun@kaust.edu.sa>
Subject: Postdoc Positions Available at KAUST

Postdoc Positions Available at KAUST -- Appointment Starting October 1, 2009

Job title: Postdoctoral Fellow

Employer: King Abdullah University of Science and Technology (KAUST)

Job description:
Three postdoctoral fellow positions are available in the Computational
Transport Phenomena Laboratory at King Abdullah University of Science and
Technology (KAUST). The Computational Transport Phenomena Laboratory is
associated with both the Division of Mathematical and Computer Sciences and
Engineering and the Division of Earth and Environmental Sciences and
Engineering at KAUST. Candidates with experience in one or more of the
following research areas are encouraged to apply:
(1) Modeling and simulations of single-phase and multi-phase flow in porous
media,
(2) Modeling and simulations of subsurface transport and geochemistry,
(3) Computational thermodynamics of hydrocarbon and other reservoir fluids,
(4) Analysis and application of finite element methods, especially
discontinuous Galerkin methods and mixed finite element methods,
(5) Computational uncertainty quantification,
(6) Large scale computing, high-performance computing and software design

Qualifications:
A successful candidate must have a Ph.D. in petroleum engineering, chemical
engineering, mechanical engineering, applied mathematics, computational
mathematics, computer science, or a related discipline, with a proven
capacity for world-class research that is reflected in a publication record
.
In particular, good technical writing skills in English are fundamental.
Though research experience in one or more of the aforementioned areas of
research is preferred, other related areas of research will also be
considered. Programming experience in FORTRAN, C, or C++ on a UNIX platform
is a must. Experience in Java, MATLAB and/or python is a plus.

Position responsibilities:
The recruited postdoctoral fellows will conduct world-class research work
and develop simulation software under the supervision of Dr. Shuyu Sun, and
will be involved in the publication of research results including journal
publications and conference presentations. Furthermore, the recruited
postdoctoral fellows may be expected to assist in the supervision of
graduate research assistants and to assist in writing external funding
proposals.

Salary and benefits:
Remuneration will be highly competitive and commensurate with the
applicant's qualifications and experience. A typical annual stipend ranges
from $50,000 U.S. dollars (for fresh Ph.D.) to $90,000 U.S. dollars (for
Ph.D. with rich research experience), with zero tax paid to the Kingdom of
Saudi Arabia. Successful applicants will also receive attractive
compensation and benefit packages provided by KAUST, including:
(1) Fully-furnished housing free to the postdoctoral fellow (up to a 2
bed-roomed town house) or at a subsidized price (for larger housing),
(2) Annual travel allowance (one round-trip airline ticket per year to visit
home country for postdoctoral fellow and his/her spouse and children,
residing permanently in the Kingdom of Saudi Arabia),
(3) Free education at KAUST schools for the postdoctoral fellow=92s children
(if there are any),
(4) Subsidized medical and dental insurance,
(5) Relocation allowances at the beginning of contract, and
(6) One month per year of paid vacation leave.
KAUST will be responsible for actual recruiting decision, appointment offers
and employment benefits.

Position start date: Flexible (flexible around fall 2009) but October 1,
2009 is preferred.

Appointment period: One year, renewable annually for a maximum appointment
of three years.

Application procedure:
Interested applicants should e-mail Dr. Shuyu Sun (shuyu.sun@kaust.edu.sa)
the following application materials:
(1) A cover letter,
(2) A complete professional CV, including educational background,
experience, and a list of publications,
(3) Names, affiliation, telephone numbers, and e-mail addresses of at least
two individuals who could provide letters of reference, if requested,
(4) A brief statement of research interests/plans (no more than two pages).

Deadline: The positions will remain open until filled.

About KAUST: (http://www.kaust.edu.sa/)
King Abdullah University of Science and Technology (KAUST) is an
international, graduate-level research university located on the Red Sea in
the Kingdom of Saudi Arabia. Dedicated to inspiring a new age of scientific
achievement that will benefit the region and the world, KAUST will exemplify
the future of world-class research. It is the vibrant home to an
international community of students, faculty and staff, researchers, and
families, situated in a unique Red Sea coastal location near Thuwal, 80
kilometers (50 miles) north of Jeddah =96 Saudi Arabia=92s second largest city.
The total area of the self-contained community spans more than 36 million
square meters, including a unique coral reef ecosystem that the University
will preserve as a marine sanctuary. At opening, KAUST will house the
Shaheen Supercomputer, a 16-rack IBM Blue Gene/P System, equipped with 4
gigabytes of memory per node and capable of 222 teraflops =97 or 222 trillion
floating-point-operations =97 per second, making KAUST=92s campus in Thuwal the
site of one of the world=92s fastest supercomputers. KAUST will also be
connected directly into the worldwide research networks, running 10 Gbps
directly to networks such as Internet2 & GEANT2. The infrastructure is
designed with future IT requirements and developments in mind, including
installation of 100,000 Ethernet ports and 500 kilometers of cables, with
abundant dark fiber ready to be activated when needed. More details are
available at http://www.kaust.edu.sa/

==========================================================================================
会议信息: International workshop on biomolecules, Beijing, September 14 - 16

From: Bo Li <bli@math.ucsd.edu>
Subject: International workshop on biomolecules, Beijing, September 14 - 16.

Dear colleagues,

Our workshop on continuum modeling of biomolecules will be held in
just one month in Beijing; see

http://lsec.cc.ac.cn/~wcmb/

We will have 20 interesting talks in three days, covering many topics
(continuum electrostatics, biomolecular diffusion, molecular dynamics
simulations, scaleed particle theory, hydrophobic interactions,
density functional theories, geometrical models of solvation,
variational models of solvation, Monte Carlo simulations, multiscale
models and methods, proteins, membranes, ion channels, etc.). I am
helping Benzhuo Lu schedule all the talks. Hopefully in a few days, we
can put the schedule on the web.

If you will be around in Beijing during the workshop, you are most
welcome to join us for talks and discussions. If you have postdocs and
students who are interested in such a workshop, please let us know.
They can contact us directly.

Best regards,
Bo

================================================================================
期刊内容: Communications in Computational Physics (CiCP),Volume 6, Number 1, 2009

发件人: "Prof. T. Tang" <ttang@math.hkbu.edu.hk>
主 题: Commun. Comput. Phys. Vol. 6 No. 1 (2009)

Communications in Computational Physics (CiCP)
Volume 6, Number 1, 2009
http://www.global-sci.com/issue/contents/6/issue1.html

Editorial Board
http://www.global-sci.com/issue/editorial_page/editorial_v6n1.pdf

Review Article:

Larisa V. Branets, Sartaj S. Ghai, Stephen L. Lyons and Xiao-Hui Wu
Challenges and technologies in reservoir modeling.
Commun. Comput. Phys., 6 (2009), pp. 1-23.
http://www.global-sci.com/openaccess/v6_1.pdf

Regular Articles:

Randi Holm, Roland Kaufmann, Elisabeth Iren Dale, Sigurd Aanonsen, Gunnar E.
Fladmark, Magne Espedal and Arne Skauge
Constructing three-phase capillary pressure functions by parameter matching
using a modified Ensemble Kalman Filter.
Commun. Comput. Phys., 6 (2009), pp. 24-48.
http://www.global-sci.com/freedownload/v6_24.pdf

Pengtao Sun, Guangri Xue, Chaoyang Wang and Jinchao Xu
Fast numerical simulation of two-phase transport model in the cathode of a
polymer electrolyte fuel cell.
Commun. Comput. Phys., 6 (2009), pp. 49-71.
http://www.global-sci.com/freedownload/v6_49.pdf

E. Abreu, J. Douglas, F. Furtado and F. Pereira
Operator splitting for three-phase flow in heterogeneous porous media.
Commun. Comput. Phys., 6 (2009), pp. 72-84.
http://www.global-sci.com/freedownload/v6_72.pdf

Yu-Shu Wu and Guan Qin
A generalized numerical approach for modeling multiphase flow and transport in
fractured porous media.
Commun. Comput. Phys., 6 (2009), pp. 85-108.
http://www.global-sci.com/freedownload/v6_85.pdf

Dong Liang, Qiang Guo and Sunling Gong
Wavelet Galerkin methods for aerosol dynamic equations in atmospheric
environment. Commun. Comput. Phys., 6 (2009), pp. 109-130.
http://www.global-sci.com/freedownload/v6_109.pdf

Eric Morales-Casique and Shlomo P. Neuman
Laplace-transform finite element solution of nonlocal and localized stochastic
moment equations of transport.
Commun. Comput. Phys., 6 (2009), pp. 131-161.
http://www.global-sci.com/freedownload/v6_131.pdf

Peter Popov, Yalchin Efendiev and Guan Qin
Multiscale modeling and simulations of flows in naturally fractured karst
reservoirs. Commun. Comput. Phys., 6 (2009), pp. 162-184.
http://www.global-sci.com/freedownload/v6_162.pdf

X.-M. He, T. Lin and Y. Lin
A bilinear immersed finite volume element method for the diffusion equation
with discontinuous coefficient.
Commun. Comput. Phys., 6 (2009), pp. 185-202.
http://www.global-sci.com/freedownload/v6_185.pdf

Kaixin Wang, Hong Wang, Mohamed Al-Lawatia and Hongxing Rui
A family of characteristic discontinuous Galerkin methods for transient
advection-diffusion equations and their optimal-order L2 error estimates.
Commun. Comput. Phys., 6 (2009), pp. 203-230.
http://www.global-sci.com/freedownload/v6_203.pdf

 

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期刊内容: Science in China Series A: Mathematics,Volume 52, Number 8/ 2009.8

发件人: "Chai Zhao" <chaizhao@scichina.org>
主 题: Table of Contents of Science in China Ser A: Mathematics 2009 No.8


The C α regularity of a class of non-homogeneous ultraparabolic equations
Author(s) WenDong Wang, LiQun Zhang
DOI 10.1007/s11425-009-0158-8
Online since August 08, 2009
Page 1589 - 1606

Construction of multiwavelets with high approximation order and symmetry
Author(s) ShouZhi Yang, YouFa Li
DOI 10.1007/s11425-009-0068-9
Online since June 11, 2009
Page 1607 - 1616

Construction of convex solutions for the second type of Feigenbaum’s functional equations
Author(s) JianGuo Si, Min Zhang
DOI 10.1007/s11425-009-0004-z
Online since August 08, 2009
Page 1617 - 1638

Gabor systems on discrete periodic sets
Author(s) YunZhang Li, QiaoFang Lian
DOI 10.1007/s11425-008-0177-x
Online since August 08, 2009
Page 1639 - 1660

Linear fractional composition operators on the Dirichlet space in the unit ball
Author(s) ZeHua Zhou, Cheng Yuan
DOI 10.1007/s11425-009-0035-5
Online since June 02, 2009
Page 1661 - 1670

Further results on ultraconvergence derivative recovery for odd-order rectangular
finite elements
Author(s) JiDong Wei, QiDing Zhu
DOI 10.1007/s11425-008-0160-6
Online since August 08, 2009
Page 1671 - 1684

Convergence of one-leg methods for nonlinear neutral delay integro-differential equations
Author(s) WanSheng Wang, ShouFu Li
DOI 10.1007/s11425-009-0032-8
Online since April 15, 2009
Page 1685 - 1698

Minimal circumscribed Hermitian ellipsoid of Hartogs domains and an application to
an extremal problem
Author(s) An Wang, Heung-ju Ahn, Jong-do Park
DOI 10.1007/s11425-009-0003-0
Online since August 08, 2009
Page 1699 - 1716

Normality concerning shared values
Author(s) JianMing Chang
DOI 10.1007/s11425-008-0172-2
Online since June 10, 2009
Page 1717 - 1722

The contact Yamabe flow on K-contact manifolds
Author(s) YongBing Zhang
DOI 10.1007/s11425-009-0036-4
Online since August 08, 2009
Page 1723 - 1732

Total colorings of planar graphs with maximum degree at least 8
Author(s) Lan Shen, YingQian Wang
DOI 10.1007/s11425-008-0155-3
Online since June 16, 2009
Page 1733 - 1742

The total chromatic number of regular graphs of high degree
Author(s) DeZheng Xie, WanNian Yang
DOI 10.1007/s11425-008-0149-1
Online since April 16, 2009
Page 1743 - 1759

Genus distribution of ladder type and cross type graphs
Author(s) LiangXia Wan, KeQin Feng, YanPei Liu, DianJun Wang
DOI 10.1007/s11425-008-0157-1
Online since April 30, 2009
Page 1760 - 1768

Path-following interior point algorithms for the Cartesian P *(κ)-LCP over
symmetric cones
Author(s) ZiYan Luo, NaiHua Xiu
DOI 10.1007/s11425-008-0174-0
Online since August 08, 2009
Page 1769 - 1784

Multifractal structure of the product measure of two independent general
subordinators’occupation measures
Author(s) LingTao Kong, XiaoYu Hu
DOI 10.1007/s11425-009-0072-0
Online since June 17, 2009
Page 1785 - 1795

Birkhoff’s theorem and viscosity solutions of Hamilton-Jacobi equations
Author(s) Wei Cheng
DOI 10.1007/s11425-008-0166-0
Online since June 15, 2009
Page 1796 - 1800

Codimension 2 reversible heteroclinic bifurcations with inclination flips
Author(s) YanCong Xu, DeMing Zhu, GuiFeng Deng
DOI 10.1007/s11425-009-0106-7
Online since August 08, 2009
Page 1801 - 1814

A topological position of the set of continuous maps in the set of upper semicontinuous maps
Author(s) ZhongQiang Yang, NaDa Wu
DOI 10.1007/s11425-008-0152-6
Online since June 15, 2009
Page 1815 - 1828

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