Triharmonic Riemannian submersions from 3-dimensional space forms

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tomoya Miura ◽  
Shun Maeta

Abstract We show that any triharmonic Riemannian submersion from a 3-dimensional space form into a surface is harmonic. This is an affirmative partial answer to the submersion version of the generalized Chen conjecture. Moreover, a non-existence theorem for f -biharmonic Riemannian submersions is also presented.

Filomat ◽  
2018 ◽  
Vol 32 (2) ◽  
pp. 543-552
Author(s):  
İrem Erken ◽  
Cengizhan Murathan

We classify the pseudo-Riemannian biharmonic submersion from a 3-dimensional space form onto a surface.


1972 ◽  
Vol 1 (2) ◽  
pp. 275-279
Author(s):  
Takehiro ITOH

Author(s):  
Paul Baird ◽  
John C. Wood

AbstractA complete classification is given of harmonic morphisms to a surface and conformal foliations by geodesics, with or without isolated singularities, of a simply-connected space form. The method is to associate to any such a holomorphic map from a Riemann surface into the space of geodesics of the space form. Properties such as nonintersecting fibres (or leaves) are translated into conditions on the holomorphic mapping which show it must have a simple form corresponding to a standard example.


2007 ◽  
Vol 75 (3) ◽  
pp. 563-581 ◽  
Author(s):  
N. Schmitt ◽  
M. Kilian ◽  
S.-P. Kobayashi ◽  
W. Rossman

2013 ◽  
Vol 50 (4) ◽  
pp. 1099-1108 ◽  
Author(s):  
Jin Ho Choi ◽  
Tae Ho Kang ◽  
Young Ho Kim

2016 ◽  
Vol 24 (5) ◽  
pp. 1027-1045 ◽  
Author(s):  
Dorel Fetcu ◽  
Simona Nistor ◽  
Cezar Oniciuc

2003 ◽  
Vol 68 (2) ◽  
pp. 275-283 ◽  
Author(s):  
Ion Mihai ◽  
Yoshihiko Tazawa

Recently, B.-Y. Chen obtained an inequality for slant surfaces in complex space forms. Further, B.-Y. Chen and one of the present authors proved the non-minimality of proper slant surfaces in non-flat complex space forms. In the present paper, we investigate 3-dimensional proper contact slant submanifolds in Sasakian space forms. A sharp inequality is obtained between the scalar curvature (intrinsic invariant) and the main extrinsic invariant, namely the squared mean curvature.It is also shown that a 3-dimensional contact slant submanifold M of a Sasakian space form M̆(c), with c ≠ 1, cannot be minimal.


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