Indian scientist Amal Kumar Raychaudhuri established ‘Raychaudhuri equation’ in 1955 to describe gravitational focusing properties in cosmology. This equation is extensively used in general relativity, quantum field theory, string theory and the theory of relativistic membranes. This paper...

This paper discusses the aspects of lease financing in Bangladesh. Bangladesh is a small but densely populated country in the South Asia and the people of it mainly depend on agricultural. Due to globalization and liberalization the country gradually shifting towards industrialization and lease...

An exact solution of Einstein equation is easier than actual solution. The Schwarzschild metric is established on the basis of Einstein’s exact solution and it is also a static and stationary solution. The Schwarzschild solution expresses the geometry of a spherically symmetric massive...

This paper discusses the long-term financial lease contracts with lease evaluation. Here a comparatively simple and straightforward solution of neutralizing the risk of lease financing is explained. The lease is a contract between the owner and the user of assets for a certain period during...

The aim of the study is to describe the general upper limit of the age of the universe with the help of different cosmological models of the universe. Here homogeneous and isotropic assumptions of the observed universe are not strictly followed to calculate the present age of the universe....

The Friedmann, Robertson-Walker universe is based on the assumption that the universe is exactly homogeneous and isotropic. This model expresses that there is an all encompassing big bang singularity in the past as the origin from which the universe emerges in a very hot phase and continues its...