Bagewadi, C.S.; Anitha, B.S.
(Український математичний журнал, 2015)
We prove the equivalence of total geodesicity, recurrence, birecurrence, generalized birecurrence, Riccigeneralized birecurrence, parallelism, biparallelism, pseudoparallelism, bipseudoparallelism of σ for the invariant ...