On the immersed submanifolds in the unit sphere with parallel Blaschke tensor II

preprint2015arXivOpen access

Abstract

As is known, the Blaschke tensor AA (a symmetric covariant 22-tensor) is one of the fundamental Möbius invariants in the Möbius differential geometry of submanifolds in the unit sphere Sn\mathbb S^n, and the eigenvalues of AA are referred to as the Blaschke eigenvalues. In this paper, we continue our job for the study on the submanifolds in $\bbs^n$ with parallel Blaschke tensors which we simply call {\em Blaschke parallel submanifolds} to find more examples and seek a complete classification finally. The main theorem of this paper is the classification of Blaschke parallel submanifolds in Sn\mathbb S^n with exactly three distinct Blaschke eigenvalues. Before proving this classification we define, as usual, a new class of examples.

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