An International Journal Dedicated to Fundamental Questions in Physics
The Elite Journal since 1988
Volume 17: Pages 390-392, 2004
Daniel Erdősi
Vienna University of Technology
The universe is a priori exactly flat.
Keywords: Robertson‐Walker metric in cosmology, fundamental observers, spherical symmetry, invariance of the 4‐line element, cosmic time, proper distance
Received: January 30, 2004; Published online: December 15, 2008
