The Eisenhart problem of finding parallel tensors is solved for the symmetric
case in the regular $f$-Kenmotsu framework. On this way, the Olszack-Rosca
example of Einstein manifolds provided by $f$-Kenmotsu manifolds via locally
symmetric Ricci tensors is recovered as well as a case of Killing vector
fields. Some other classes of Einstein-Kenmotsu manifolds are presented. Our
result is interpreted in terms of Ricci solitons and special quadratic first
integrals.
@article{1006.3132,
author = {C\u alin, Constantin and Crasmareanu, Mircea},
title = {From the Eisenhart problem to Ricci solitons in $f$-Kenmotsu manifolds},
journal = {arXiv},
volume = {2010},
number = {0},
year = {2010},
language = {en},
url = {http://dml.mathdoc.fr/item/1006.3132}
}
Călin, Constantin; Crasmareanu, Mircea. From the Eisenhart problem to Ricci solitons in $f$-Kenmotsu manifolds. arXiv, Tome 2010 (2010) no. 0, . http://gdmltest.u-ga.fr/item/1006.3132/