Mass

Mass is a mathematical relation between external force (acting on a body) and the acceleration of the body in the direction of the force. Due to lack of a reference to define matter-content of a body, one of its attribute, the mass is often used to define as an equivalent to the quantity 3D matter-content of a 3D matter-body. Being a mathematical relation, it is a functional entity. It has neither objective reality nor positive existence in space. Mass exists only in the minds of physicists and in mathematical analyses. It has neither cause nor creator, except the rational beings and their mathematical analyses. The force and the acceleration are mathematical concepts. Therefore, there is only one type of mass, irrespective of the source of force or the type of acceleration. There is no difference between gravitational mass and inertial mass of a body. If the external force is unable to accelerate a body, its mass becomes infinity and if the external force (that is being applied) cannot act on a body, its mass becomes zero. Hence, depending on the nature of external force and the body’s ability to accelerate, mass of a body can vary between zero to infinity. See: http://vixra.org/pdf/1105.0034v2.pdf