【摘 要】
：
The analytic cosmological solutions of Einsteins field equations for a type of static metric representing plane, spherical and hyperbolic symmetric spaces are p
【机 构】
：
Department of Mathematics and RCMPS, Chittagong University, Chittagong, Bangladesh
论文部分内容阅读
The analytic cosmological solutions of Einsteins field equations for a type of static metric representing plane, spherical and hyperbolic symmetric spaces are presented and their properties are discussed separately. A general type of solution is obtained which represents the plane, spherical and hyperbolic symmetric cosmological models. Its physical properties are also discussed in details.
其他文献
A new method is presented to generate finite dimensional integrable systems. Our starting point is a generalized Lax matrix instead of usual Lax pair. Then a un
华南热带作物研究院热作所与广东省药材公司合作的成龄胶园间种益智课题,经过六年的试验,取得较好的效果,于1987年5月8日在海南岛通过鉴定。成龄胶园间种益智,基本符合橡胶
We propose the eigenstates and eigenvalues of Hamiltonians of the rational SU(N) Gaudin model based onthe quasi-classical limit of the SU ( N) chain under the p
By virtue of the technique of integration within an ordered product of operators we derive the concise normally ordered expansion of the even-power of the radia
The 368 water molecule structure I empty gas hydrates with three possible hydrogen orientations are calculated using TIP4P potential molecular dynamical simulat
山东省茌平县韩屯乡,盐碱地占耕地面积的78.4%。土壤含盐量为0.33%。1983～1985年试验表明,地膜棉的亩产量在75公斤
Hanping County, Chiping County, Shandong Province, sa
The normalized supercoherent state of the orthosymplectic(OSP)(2,1) superalgebra is constructed and its properties are discussed in detail. The new inhomogeneou
结合我国实际,综合考虑水库大坝自身安全以及潜在的溃坝后果,研究提出了一套相对简单和快速的水库大坝风险等级评估方法,包括风险指数快速评估方法、风险评分方法、定量风险
By using AKNS [Phys. Rev. Lett. 31 (1973) 125] system and introducing the wave function, a family of interesting exact solutions of the sine-Gordon equation are
We investigate a multi-player and multi-choice quantum game. We start from a two-player and two-choice game,and the result is better than its classical version.