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COMPLETE KAHLER METRICS WITH POSITIVE HOLOMORPHIC SECTIONAL CURVATURES ON CERTAIN LINE BUNDLES(RELATED TO A COHOMOGENEITY ONE POINT OF VIEW ON A YAU CONJECTURE) 被引量:1
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作者 段晓曼 关庄丹 《Acta Mathematica Scientia》 SCIE CSCD 2024年第1期78-102,共25页
In this article,we study Kahler metrics on a certain line bundle over some compact Kahler manifolds to find complete Kahler metrics with positive holomorphic sectional(or bisectional)curvatures.Thus,we apply a strateg... In this article,we study Kahler metrics on a certain line bundle over some compact Kahler manifolds to find complete Kahler metrics with positive holomorphic sectional(or bisectional)curvatures.Thus,we apply a strategy to a famous Yau conjecture with a co-homogeneity one geometry. 展开更多
关键词 kahler Metrics complete Riemannian metrics open complex manifolds holomorphic bisectional curvature C*bundle almost homogeneous manifolds
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在复二维仿射锥上的完备余齐性一Kahler度量
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作者 关庄丹 梁梦翔 《Chinese Quarterly Journal of Mathematics》 2024年第2期200-220,共21页
In this paper,we revisit the Kahler structures on the affine quadrics M1={z_(1)^(2)+z_(2)^(2)+z_(3)^(2)=1}in the paper by Bo Yang and Fang-Yang Zheng.We found that the Kahler structures on the complex surface are more... In this paper,we revisit the Kahler structures on the affine quadrics M1={z_(1)^(2)+z_(2)^(2)+z_(3)^(2)=1}in the paper by Bo Yang and Fang-Yang Zheng.We found that the Kahler structures on the complex surface are more complicated than what they have thought.We shall also give some detail calculations and found that our results fit quite well with earlier papers of the first author,one of them with X.X.Chen. 展开更多
关键词 Affine quadrics Complex structure kahler metrics Cohomogeneity one action
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Kahler流形上有关Bakry-Emery曲率的Schur引理(英文)
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作者 黄广月 《数学杂志》 2018年第2期214-216,共3页
本文研究了K(a|¨)hler流形上有关Bakry-Emery曲率的Schur引理.即在K(a|¨)hler流形上考虑方程R_(ij)+f_(ij)=λg_(ij),其中f,λ是光滑实值函数.利用Bianchi恒等式,得到了λ是常数.
关键词 kahler流形 Schur引理 K(a|¨)hler-Ricci孤立子
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Tensor-Centric Warfare IV:Kahler Dynamics of Battlefields
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作者 Vladimir Ivancevic Darryn Reid Peyam Pourbeik 《Intelligent Control and Automation》 2018年第4期123-146,共24页
This paper presents the complex dynamics synthesis of the combat dy-namics series called tensor-centric warfare (TCW;for the first three parts of the series, see [1] [2] [3]), which includes tensor generalization of c... This paper presents the complex dynamics synthesis of the combat dy-namics series called tensor-centric warfare (TCW;for the first three parts of the series, see [1] [2] [3]), which includes tensor generalization of classical Lanchester-type combat equations, entropic Lie-dragging and commutators for modeling warfare uncertainty and symmetry, and various delta-strikes and missiles (both deterministic and random). The present paper gives a unique synthesis of the Red vs. Blue vectorfields into a single complex battle-vectorfield, using dynamics on K&#228;hler manifolds as a rigorous framework for extending the TCW concept. The global K&#228;hler dynamics framework, with its rigorous underpinning called the K&#228;hler-Ricci flow, provides not only a new insight into the “geometry of warfare”, but also into the “physics of warfare”, in terms of Lagrangian and Hamiltonian structures of the battlefields. It also provides a convenient and efficient computational framework for entropic wargaming. 展开更多
关键词 Tensor-Centric Warfare kahler Geometry Complex Battle-Vectorfield Lagrangian and Hamiltonian Battlefields kahler-Ricci Flow Entropic Computational Wargaming
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The Equivalence between Bergman Metric and Einstein-Kahler Metric on the Cartan-Hartogs Domain of the Fourth Type 被引量:4
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作者 ZHAO Xiao-xia LIN Ping 《Chinese Quarterly Journal of Mathematics》 CSCD 北大核心 2008年第3期317-324,共8页
In this paper, we discuss the invariant complete metric on the Cartan-Hartogs domain of the fourth type. Firstly,we find a new invariant complete metric, and prove the equivalence between Bergman metric and the new me... In this paper, we discuss the invariant complete metric on the Cartan-Hartogs domain of the fourth type. Firstly,we find a new invariant complete metric, and prove the equivalence between Bergman metric and the new metric; Secondly, the Ricci curvature of the new metric has the super bound and lower bound; Thirdly,we prove that the holomorphic sectional curvature of the new metric has the negative supper bound; Finally, we obtain the equivalence between Bergman metric and Einstein-Khler metric on the Cartan-Hartogs domain of the fourth type. 展开更多
关键词 第四类Cartan-Hartogs域 BERGMAN度量 EINSTEIN-kahler度量 等价
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C^(3)中曲面Kahler角的刚性定理(英文)
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作者 李慧 李兴校 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2018年第2期243-250,共8页
浸入到近复Hermit流形的曲面的Khler角是一个重要的不变量,可以用于刻画曲面偏离拟全纯曲线的程度.近年来,具有常Khler角的曲面仍是很有意义的研究对象.对于3维复欧氏空间C^3中具有常Khler角的曲面收缩子,本文证明了两个刚性定理... 浸入到近复Hermit流形的曲面的Khler角是一个重要的不变量,可以用于刻画曲面偏离拟全纯曲线的程度.近年来,具有常Khler角的曲面仍是很有意义的研究对象.对于3维复欧氏空间C^3中具有常Khler角的曲面收缩子,本文证明了两个刚性定理.这些定理是有关C^3中曲面自收缩子的相应定理的直接拓展. 展开更多
关键词 刚性定理 浸入曲面 kahler 自收缩子
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一类Reinhardt域的群不变函数与不变Kahler度量 被引量:1
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作者 童武 《数学研究》 CSCD 1996年第1期98-105,共8页
本文把[1]的结果推广到更广泛的一类Reinhardt域D=D(k1k2…kp) C(1≤p<n),即利用D的解析自同构群Aut(D)下不变函数给出了域D在Aut(D)下不变的Kahler度量.
关键词 REINHARDT域 群不变函数 不变Kaehler度量 解析自同构群 双全纯映射
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HAMILTONIAN MECHANICS ON KAHLER MANIFOLDS
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作者 张荣业 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第3期353-362,共10页
Using the mechanical principle, the theory of modern geometry and advanced calculus, Hamiltonian mechanics was generalized to Kahler manifolds, and the Hamiltonian mechanics on Kahler manifolds was established. Then t... Using the mechanical principle, the theory of modern geometry and advanced calculus, Hamiltonian mechanics was generalized to Kahler manifolds, and the Hamiltonian mechanics on Kahler manifolds was established. Then the complex mathematical aspect of Hamiltonian vector field and Hamilton's equations was obtained, and so on. 展开更多
关键词 kahler manifold CONNECTION absolute differential Lie derivative Hamiltonian vector 1-parameter group
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INVARIANT FORM AND INTEGRAL INVARIANTS ON KAHLER MANIFOLD
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作者 张荣业 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2006年第2期269-278,共10页
The important notions and results of the integral invariants of Poincard and Cartan-Poincard and the relationship between integral invariant and invariant form established first by E. Cartan in the classical mechanics... The important notions and results of the integral invariants of Poincard and Cartan-Poincard and the relationship between integral invariant and invariant form established first by E. Cartan in the classical mechanics are generalized to Hamilton mechanics on Kiihler manifold, by the theory of modern geometry and advanced calculus, to get the corresponding wider arid deeper results. differential 展开更多
关键词 kahler manifold symplectic manifold invariant form integral invariant vector field form field Lie derivative exterior differential
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LAGRANGIAN MECHANICS ON KAHLER MANIFOLDS
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作者 张荣业 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2005年第10期1363-1374,共12页
Lagrangian mechanics on Kahler manifolds were discussed, and the complex mathematical aspects of Lagrangian operator, Lagrange's equation, the action functional, Hamilton' s principle, Hamilton' s equation and so o... Lagrangian mechanics on Kahler manifolds were discussed, and the complex mathematical aspects of Lagrangian operator, Lagrange's equation, the action functional, Hamilton' s principle, Hamilton' s equation and so on were given. 展开更多
关键词 kahler manifold absolute differential Lagrangian operator Hamilton' s principle
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ON MINIMAL IMMERSIONS OF R^2 INTO THE NEARLY KAHLER S^6
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作者 沈一兵 贺群 《Acta Mathematica Scientia》 SCIE CSCD 2004年第3期349-360,共12页
In terms of the almost complex affine connection and moving unitary frames, all totally rael minimal immersions from R-2 into the nearly Kahler S-6 axe determine explicitly. Moreover, the complete flat almost complex ... In terms of the almost complex affine connection and moving unitary frames, all totally rael minimal immersions from R-2 into the nearly Kahler S-6 axe determine explicitly. Moreover, the complete flat almost complex curves in the nearly Kahler S-6 are determined completely. 展开更多
关键词 minimal immersion the nearly kahler S-6 flat totally real surface
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One Nonparabolic End Theorem on Kahler Manifolds
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作者 ZHU PENG Yin Jing-xue 《Communications in Mathematical Research》 CSCD 2014年第3期237-244,共8页
In this paper, the complete noncompact Kahler manifolds satisfying the weighted Poincare inequality are considered and one nonparabolic end theorem which generalizes Munteanu's result is obtained.
关键词 nonparabolic end weighted Poincare inequality kahler manifold
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Kahler’s Disease with a Rare Clinical form and Review of Literature
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作者 R. D. Gogoua D. G. Gogoua M. Kaba 《Open Journal of Orthopedics》 2018年第2期39-45,共7页
Kahler’s disease or “multiple myeloma” is a cancerous disease of the bone marrow. It may appear straightaway in its multiple myeloma form or in the form of solitary bone plasmacytoma or extra bone plasmacytoma. In ... Kahler’s disease or “multiple myeloma” is a cancerous disease of the bone marrow. It may appear straightaway in its multiple myeloma form or in the form of solitary bone plasmacytoma or extra bone plasmacytoma. In the extra bone form, its orbital location as the first symptom is exceptional. Our case concerned a 49-year-old female patient without significant medical history who was followed for 6 months for a voluminous left exophthalmos. This ocular symptomatology was accompanied six months after by acute bone pains in the spine and pelvis then by a pathological fracture of the left trochanter. Histological assessment during the treatment showed the diagnosis of Kahler’s disease. The serum calcium was 106 mmol/l, a blood level of chloride to 96 mmol/l, of potassium to 5.36 mmol/l, of sodium to 136 mmol/l. The 24-hour proteinuria was 0.30 g/l and indicated renal impairment. The patient had anemia with a hemoglobin level to 8.8 g/l. Tumor markers were normal;in particular the CA was 13.148, ACE-2 to 1.013 ng/ml and CA19-9 to 5.029 IU/ml. The patient was transferred to a specialized unit but died before the start of treatment. Thus any isolated exophthalmos or accompanied by bone signs must systematically suggest Kahler’s disease and make undertake investigations in this direction. It is on this condition that an early management of the disease can improve the prognosis of the disease and prolong the patient’s life. 展开更多
关键词 kahler’s Disease PLASMACYTOMA ORBITAL LOCATION of
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NEWTONIAN MECHANICS ON KAHLER MANIFOLD
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作者 张荣业 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1996年第8期751-764,共15页
In this paper we discuss Newtonian Mechanics on Kahler Manifold, and also givefoe complex mathematical aspects of Newton's law, the law of kinetic energy, the lawof kinetic quantity,the equation of motion and the ... In this paper we discuss Newtonian Mechanics on Kahler Manifold, and also givefoe complex mathematical aspects of Newton's law, the law of kinetic energy, the lawof kinetic quantity,the equation of motion and the 'general equation of dynamics',and so on. 展开更多
关键词 kahler Manifold. a connection. an absolute differential. theduality pairing
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Nearly para-Kahler流形H_(3)^(6)上的殆仿切触拉格朗日子流形
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作者 陈玉婷 杨标桂 《福建师范大学学报(自然科学版)》 CAS 北大核心 2020年第3期17-23,共7页
给出nearly para-Kahler流形H3^6的一个拉格朗日子流形M上的一个单位向量场ξ典范引出的殆仿切触度量结构是quasi-para-Sasakian,α-para-Kenmotsu的充要条件.同时推导出当M上典范诱导的仿切触度量结构是para-Sasakian的一个必要条件.
关键词 nearly para-kahler流形 拉格朗日子流形 quasi-para-Sasakian结构 α-para-Kenmotsu结构 (殆)仿切触度量结构
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关于Kahler流形上的Newton力学 被引量:3
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作者 张荣业 《应用数学和力学》 CSCD 北大核心 1996年第8期709-719,共11页
本文讨论Kahler流形上的Newton力学.在此给出Newton定律、动能定律、动量定律、虚位移原理、D'Alembert-Lagrange原理、运动方程及“普遍运动方程”等的复的数学形式.
关键词 对偶对 牛顿定律 KAEHLER流形 牛顿力学
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李奇曲率平行的Kahler流形的孤立现象
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作者 夏巧玲 《四川大学学报(自然科学版)》 CAS CSCD 1994年第1期20-26,共7页
证明了李奇曲率平行的Kahler流形上的黎曼曲率的Pinching定理。
关键词 李奇曲率 凯勒流形 孤立现象
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S^6中具有常数Kahler角的极小曲面 被引量:2
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作者 李兴校 李安民 《数学学报(中文版)》 SCIE CSCD 北大核心 1996年第2期196-203,共8页
球面S6具有典型的近复结构,因而对于其中的曲面可引入Kahler角的概念.本文研究S6内具有常数Kahler角的极小曲面,得到了刚性定理.结合已有结果,易知Simon猜想对于这类曲面成立.
关键词 近复结构 极小曲面 kahler Hermite流形
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紧致局部共形Kahler流形上Morse-Novikov上同调群的一个关系 被引量:1
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作者 杨向东 郑泉 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第3期465-469,共5页
利用谱序列方法,作者证明了紧致局部共形Khler流形上关于Morse-Novikov上同调群的一个关系,这个关系可以看作一般紧致复流形上Frlicher关系的类比.同时,作者证明了在维数大于2的对角Hopf流形上存在局部共形Khler结构,使得其Morse-... 利用谱序列方法,作者证明了紧致局部共形Khler流形上关于Morse-Novikov上同调群的一个关系,这个关系可以看作一般紧致复流形上Frlicher关系的类比.同时,作者证明了在维数大于2的对角Hopf流形上存在局部共形Khler结构,使得其Morse-Novikov上同调群分别满足对称性和直和性. 展开更多
关键词 局部共形kahler流形 Morse-Novikov上同调 对角Hopf流形
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关于紧致近p-Kahler流形的全纯形变开性 被引量:2
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作者 杨松 《四川大学学报(自然科学版)》 CAS CSCD 北大核心 2013年第2期241-245,共5页
在本文中,我们在n维紧致复流形X上定义了近p-Khler度量,即考虑紧致复流形X上的Hermitian度量h,它的Hermitian形式ω满足如下近p-Khler条件:d(ωp+σ)=0,其中1≤p≤n-1是整数,σ是实(p,p)-形式(这里σ≠-ωp).我们称h为近p-Khler度... 在本文中,我们在n维紧致复流形X上定义了近p-Khler度量,即考虑紧致复流形X上的Hermitian度量h,它的Hermitian形式ω满足如下近p-Khler条件:d(ωp+σ)=0,其中1≤p≤n-1是整数,σ是实(p,p)-形式(这里σ≠-ωp).我们称h为近p-Khler度量.我们证明了在假定(n-1,n)-弱-引理性质和(n-1,n-1)-Hermitian性质成立的前提下,近(n-1)-Khler度量是全纯形变开的. 展开更多
关键词 复结构的形变 近p-kahler度量 全纯形变开性
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