一类拟凸域的Bergman度量与Kobayashi度量的比较定理

本文对一类拟凸域Ｅ（ｍ，ｎ，Ｋ）给出其不变Ｋａｈｌｅｒ度量下的全纯截曲率的显表达式，并构造了Ｅ（ｍ，ｎ，Ｋ）的一个不变的完备的Ｋａｈｌｅｒ度量，使得它大于或等于Ｂｅｒｇｍａｎ度量，而且其全纯截曲率的上界是一个负常数，从而得到Ｅ（ｍ，ｎ，Ｋ）的Ｂｅｒｇｍａｎ度量和Ｋｏｂａｙａｓｈｉ度量的比较定理。     

Fuzzy度量空间中的单值映射的Caristi型不动点定理

本文采用Ｋａｌａｖａ和Ｓｅｉｋｋａｌａ的模糊度量空间定义，利用文（７）中建立的亚度量簇生成空间理论，研究了Ｆｕｚｚｙ度量空间中的单值映射的Ｃａｒｉｓｔｉ型不动点定理以及它在Ｍｅｎｇｅｒ概率度量空间中的应用。     

非光滑三次代数曲面簇上Kahler-EinsteinOrbifold度量的一个存在性定理

本文利用Ｋａｈｌｅｒ－Ｅｉｎｓｔｅｉｎ流形的模空间思想，证明了非光滑三次代数曲面簇上Ｋａｈｌｅｒ－Ｅｉｎｓｔｅｉｎｏｒｂｉｆｏｌｄ度量的一个存在性定理。     

F函数值在K_ν上无关性的度量

本文给出Ｆ函数值在Ｋｖ上的一些无关性度量．     

Cartan-Hartogs域上Kaihler-Einstein度量与Bergman度量的等价

本文研究的是华罗庚域的特殊类型第二类Cartan-Hartogs域的不变Bergman度量与Kahler-Einstein度量的等价问题．引入一种与Bergman度量等价的新的完备的Kahler度量ωgλ，其Ricci曲率和全纯截取率具有负的上下界．然后应用丘成桐对Schwarz引理的推广证明ωgλ等价于Kahler-Einstein度量，从而得到了Bergman度量与Kahler-Einstein度量的等价，即丘成桐关于度量等价的猜想在第二类Cartan-Hartogs域上成立．     

一类Reinhardt域从任一不变Kahler度量导出的解析自同胚群

把文［１］中结果推广到Ｒｅｉｎｈａｒｄｔ域Ｄ＝Ｄ（Ｋ１Ｋ２…Ｋｐ）Ｃ（１≤ｐ＜ｎ）．即证明了从域Ｄ的任一不变Ｋｈｌｅｒ度量都可以导出相同的Ａｕｔ（Ｄ）     

一类Reinhardt域的Einstein-Kahler度量及其曲率

本文给出Ｃｎ中一类Ｒｅｉｎｈａｒｄｔ域Ｄ０（Ｋ）的使Ｒｉｃｃｉ曲率为－１的Ｅｉｎｓｔｅｉｎ－Ｋａｈｌｅｒ度量的显表达式，更有兴趣的是其全纯截曲率也是常数，等于一２（ｎ＋１）＿（－１）。并给出在此度量下的全部调和函数     

一类拟凸域的不变Khler度量与曲率

本文对Ｃｍ＋ｎ中的一类有界拟凸域给出了不变Ｋｈｌｅｒ度量及其曲率以及不变调和函数的显表达式     

关于度量投影的连续性

本文引入的Ｂａｎａｃｈ空间的（Ｃ－Ｉ）、（Ｃ－Ⅱ），（Ｃ－Ⅲ）等几何性质，证明了如下结果。设Ｍ是Ｂａｎａｃｈ空间的逼近凸子集，如果Ｂａｎａｃｈ空间有性质（Ｃ－Ｉ），（Ｃ－Ⅱ）（Ｃ－Ⅲ），则度量投影ＰＭ连续（范数－范数上半连续，范数－弱上半连续）。这些结果推广了文（４，７，８）相应的定理。最近，Ｄ．Ｋｕｔｚａｒｏｖａ，Ｂｏｒ－Ｌｕｈ Ｌｉｎ等引入了一些新的凸性空间，本文还研究了这些凸性空间中度量投影     

第一类超 Cartan域上的比较定理

给出了第一类超Cartan域上不变Kähler 度量下的全纯截曲率的表达式.利用其Bergman度量的完备性,构造了一个不比Bergman度量小的完备的不变Kähler度量.证明了在此Kähler度量下的全纯截曲率有一个负上界, 从而证明了第一类超Cartan域的Bergman度量和Kobayashi度量的比较定理.     

Carbon emissions and resources use by Chinese economy 2007: A 135-sector inventory and input–output embodiment

A 135-sector inventory and embodiment analysis for carbon emissions and resources use by Chinese economy 2007 is presented in this paper by an ecological input–output modeling based on the physical entry scheme. Included emissions and resources belong to six categories as: (1) greenhouse gas (GHG) in terms of CO₂, CH₄, and N₂O; (2) energy in terms of coal, crude oil, natural gas, hydropower, nuclear power, and firewood; (3) water in terms of freshwater; (4) exergy in terms of coal, crude oil, natural gas, grain, bean, tuber, cotton, peanut, rapeseed, sesame, jute, sugarcane, sugar beet, tobacco, silkworm feed, tea, fruits, vegetables, wood, bamboo, pulp, meat, egg, milk, wool, aquatic products, iron ore, copper ore, bauxite, lead ore, zinc ore, pyrite, phosphorite, gypsum, cement, nuclear fuel, and hydropower; (5) and (6) solar and cosmic emergies in terms of sunlight, wind power, deep earth heat, chemical power of rain, geopotential power of rain, chemical power of stream, geopotential power of stream, wave power, geothermal power, tide power, topsoil loss, coal, crude oil, natural gas, ferrous metal ore, non-ferrous metal ore, non-metal ore, cement, and nuclear fuel. Accounted based on the embodied intensities are carbon emissions and resources use embodied in the final use as rural consumption, urban consumption, government consumption, gross fixed capital formation, change in inventories, and export, as well as in the international trade balance. The resulted database is basic to environmental account of carbon emissions and resources use at various levels.     

Describing Neighborhoods of 5-Vertices in a Class of 3-Polytopes with Minimum Degree 5

Lebesgue proved in 1940 that each 3-polytope with minimum degree 5 contains a 5-vertex for which the set of degrees of its neighbors is majorized by one of the following sequences(6, 6, 7, 7, 7), (6, 6, 6, 7, 9), (6, 6, 6, 6, 11)(5, 6, 7, 7, 8), (5, 6, 6, 7, 12), (5, 6, 6, 8, 10), (5, 6, 6, 6, 17)(5, 5, 7, 7, 13), (5, 5, 7, 8, 10), (5, 5, 6, 7, 27), (5, 5, 6, 6,∞), (5, 5, 6, 8, 15), (5, 5, 6, 9, 11)(5, 5, 5, 7, 41), (5, 5, 5, 8, 23), (5, 5, 5, 9, 17), (5, 5, 5, 10, 14), (5, 5, 5, 11, 13).We prove that each 3-polytope with minimum degree 5 without vertices of degree from 7 to 10 contains a 5-vertex whose set of degrees of its neighbors is majorized by one of the following sequences: (5, 6, 6, 5, ∞), (5, 6, 6, 6, 15), and (6, 6, 6, 6, 6), where all parameters are tight.     

Constructing difference families through an optimization approach: Six new BIBDs

In this paper we formulate the construction of difference families as a combinatorial optimization problem. A tabu search algorithm is used to find an optimal solution to the optimization problem for various instances of difference families. In particular, we construct six new difference families which lead to an equal number of new balanced incomplete block designs with parameters: (49, 98, 18, 9, 3), (61, 122, 20, 10, 3), (46, 92, 20, 10, 4), (45, 90, 22, 11, 5), (85, 255, 24, 8, 2) and (34, 85, 30, 12, 10). © 2000 John Wiley & Sons, Inc. J Combin Designs 8: 261–273, 2000     

一个随机偏差定理

设{Xn，n≥0}是可列非齐次马尔可夫链，Sn（i0，i1，…，im-1，ω）表示m元状态序组（i0，i1，…，im-1）在序列（X0，X1，…，Xm-1），（X1，X2，…，Xm），…，（Xn-1，Xn，…，Xn＋m-2）中出现的次数.本文给出了关于Sn（i0，i1，…，im-1，ω）的一个对任意可列非齐次马尔可夫链普遍成立的随机偏差定理，即用不等式表示的一个强极限定理.     

可变幅角复系数的解析函数族

研究了在单位开圆盘内单叶解析且规范化的复系数函数族gφ1,φ2,φ3,φ4（m1,m2,m3,m4;λ）的一些性质,给出了其子族gφ1,φ2,φ3,φ4（m1,m2,m3,m4;λ）在内闭一致收敛拓扑下的极值点和支撑点,并讨论解决了gφ1,φ2,φ3,φ4（m1,m2,m3,m4;λ）与凸函数相关的一些半径问题,推广了近来的一些研究结果．     

一个随机偏差定理

设{Xn,n≥0}是可列非齐次马尔可夫链,Sn(i0,i1,…,im-1,ω)表示m元状态序组(i0,i1,…,im-1)在序列(X0,X1,…,Xm-1),(X1,X2,…,Xm),…,(Xn-1,Xn,…,Xn+m-2)中出现的次数.本文给出了关于Sn(i0,i1,…,im-1,ω)的一个对任意可列非齐次马尔可夫链普遍成立的随机偏差定理,即用不等式表示的一个强极限定理.     

Book reviews

L.N. TREFETHEN and D. BAU, III,Numerical Linear Algebra,SIAM, Philadelphia, 1997G.-C. ROTA,Indiscrete Thoughts,Birkhäuser, Boston, 1997D.E. KEYES, A. SAMEH and V. VENKATAKRISHNAN, eds.Parallel Numerical Algorithms,Kluwer, Dordrecht, 1997A. KIRSCH,An Introduction to the Mathematical Theory of Inverse Problems,Springer, New York, 1996L.F. SHAMPINE, R.C. ALLEN, Jr. and S. PRUESS,Fundamentals of Numerical Computing,Wiley, New York, 1997C.W. UEBERHUBERNumerical Computation, 2 vols.Springer, Berlin, 1997W.G. McCALLUM et al.Multivariate Calculus,Wiley, New York, 1997ZHI-QUAN LUO, JONG-SHI PANG and D. RALPH,Mathematical Programs with Equilibrium Constraints,Cambridge University Press, Cambridge, 1996P.R. POPIVANOV and D.K. PALAGACHEV,The Degenerate Oblique Derivative Problem for Elliptic and Parabolic Equations,Akademie Verlag, Berlin, 1997     

Book reviews

Griffiths, D.F. (ed.):Numerical Analysis. Proceedings of the 10th Biennial Conference held at Dundee, Scotland, Jun 28-Juli 1, 1983. Lecture Notes in Mathematics. Vol. 1066. SpringerVerlag Berlin, Heidelberg, New York, Tokyo 1984, XI, 275 p. DM 33.50, ISBN 2-540-13344-5.

Gross, D.; C.M. Harris:Fundamentals of Queueing Theory. 2. Ed. John Wiley & Sons Limited New York, Chichester, Brisbane, Toronto 1985, XII, 587 p., £ 43.95, ISBN0-471-89067-7.

Miklosöko.; J.E.Kotov (eds.):Algorithms, Software and Hardware of Parallel Computers. Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1984, 181 figs., 380 p., DM 89,-,ISBN 3-540-13657-6.

Dolcetta, I.C.; W.H. Fleming; T.Zolezzr (eds.):Recent Mathematical Methods in Dynamic Programming. Proceedings Corti. Rome, Mar 26-28, 1984. Lecture Notes in Mathematics. Vol. 1119. Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1985, VI, 202 S.DM 31,50, ISBN 3-540-15217-2.

Demyanov, V.F.; D.Pallaschke (eds.):Nondifferentiable Optimization:Motivations and Applications. Proceedings, Sopron, Hungary 1984. Lecture Notes in Economics and Mathematical Systems. Vol. 255. Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1985, VI, 349 S.

Kiwiel, K.C.:Methods of Descent for Nondifferentiable Optimization. Lecture Notes in Mathematics. VoL 1133. Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1985, 'T1, 362 S., DM 51,50, ISBN 3-540-15642-9.

Remmert, R.:Funktionentheorie. Vol. 1. Grundwisaen Mat.hematik. Vol. 5. Springer-Verlag Berlin, Heidelberg, New York, Tokyo 1984, 65 Abb., XIII, 324 S., DM 44,-, ISBN:3;540-12782-8.

Walsh, G. R.:An Introduction to Linear Programming. 2. Ed. John Wiley & Sons Chichester, New York, Brisbane, Toronto, Singapore 1985, IX, 240 p., ISBN 0-471-90719-7.

Törnig, W.;M. Kaspar:Numerische Ldsung von partiellen Differentialgleichungen der Technik. Mathematische Methoden in der Technik.. Bd.. 1. B. G. Teubner Stuttgart 1985, 181 S., DM 34,-, ISBN 3-519-02613-9.

Neunzert, H.(ed.):Proceedings of the Conference JIathematics in Industry, Oct 24 - 28, 1983 Oberwolfach. B. G. Teubner Stuttgart 1984, 287 S., 52,- DM, ISBN 3-519-02610-4.

Lösch, M.:Fixpunkt-Schätzvertahren für Modelle mit rationaien Erwartungen.. Mathematical Systems in Economics:" Vol. 94. Verlagsgruppe Athenäum, Hain, Hanstein Königstein 1984; 312 S.,DM 68,-,ISBN 3-445-02387-5.

Bultheel, A.; P.Dewilde (eds.):Rational Approximation in Systems Engineering. Birkhäuser Verlag Basel 1983, 244 pp., sFr. 72,-. ISBN 3-7643-3159-3.

Harrison, J. M.:Brownian ])Iotion and Stochastic Flow Systems. John Wiley & Sons New York, Chichester, Brisbane 1985, XIX, 140 pp., 36.95 £ ISBN 471-81939-5.     

On sequences with zero autocorrelation

Normal sequences of lengthsn=18, 19 are constructed. It is proved through an exhaustive search that normal sequences do not exist forn=17, 21, 22, 23. Marc Gysin has shown that normal sequences do not exist forn=24. So the first unsettled case isn=27.Base sequences of lengths 2n–1, 2n–1,n,n are constructed for all decompositions of 6n–2 into four squares forn=2, 4, 6, ..., 20 and some base sequences forn=22, 24 are also given. So T-sequences (T-matrices) of length 71 are constructed here for the first time. This gives new Hadamard matrices of orders 213, 781, 1349, 1491, 1633, 2059, 2627, 2769, 3479, 3763, 4331, 4899, 5467, 5609, 5893, 6177, 6461, 6603, 6887, 7739, 8023, 8591, 9159, 9443, 9727, 9869.