Mohajan, Haradhan - Volkswirtschaftliche Fakultät, … - 2013
Raychaudhuri equations play important roles to describe the gravitational focusing and space-time singularities. Amal … Kumar Raychaudhuri established it in 1955 to describe gravitational focusing properties in cosmology. When the star is … taken here to describe gravitational focusing and space-time singularities in some detail with easier mathematical …