Amazon.com description: Product Description: Prespacetime Journal ("PSTJ," http://www.prespacetime.com) is a publication in which physicists, mathematicians and other learned scholars publish their research results and express their views on the origin, nature and mechanism of spacetime and its possible connection to a prespacetime. It is also a journal where all learned scholars can present their models and experimental results on elemental particles, fundamental forces including gravity and related topics. This is PSTJ Volume 7 Issue 6 first published in April 2016. It is entitled "Lorentz-invariant Gravitation Theory", features Alexander G. Kyriakos’ work, and contains the following: Annotation; Notations; Chapter 1. Introduction. Statement of problem; Chapter 2. Origin of gravitation mass; Chapter 3. The axiomatics of LIGT and its consequences; Chapter 4. Electromagnetic base of relativistic mechanics; Chapter 5. Connection of electromagnetic theory and gravitation; Chapter 6. Electromagneticly-like solutions of the GR; Chapter 7. The mathematical apparatus of LIGT; Chapter 8. Geometry and physic of LIGT and GTR; Chapter 9. Lorentz transformations and metric tensor of LIGT; Chapter 10. The solution of non-cosmological problems in framework of LIGT; Chapter 11. Solution of the Kepler problem in the framework LIGT; Chapter 12. Cosmological solutions in framework of LIGT; and References.