7 citations · 10 across the 2 of their papers we have counts for
2 papers
gr-qc2015★ 3 cited
On the existence of rigid spheres in four-dimensional spacetime manifolds
Hans-Peter Gittel, Jacek Jezierski, Jerzy Kijowski
This paper deals with the generalization of usual round spheres in the flat Minkowski spacetime to the case of a generic four-dimensional spacetime manifold . We consider geomet…
gr-qc2012★ 7 cited
Rigid spheres in Riemannian spaces
Hans-Peter Gittel, Jacek Jezierski, Jerzy Kijowski +1
Choice of an appropriate (3+1)-foliation of spacetime or a (2+1)-foliation of the Cauchy space, leads often to a substantial simplification of various mathematical problems in Gene…