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Minimal Kähler submanifolds in product of space forms

  • Alcides de Carvalho and Iury Domingos ORCID logo EMAIL logo
Published/Copyright: June 1, 2023

Abstract

In this article, we study minimal isometric immersions of Kähler manifolds into product of two real space forms. We analyse the obstruction conditions to the existence of pluriharmonic isometric immersions of a Kähler manifold into those spaces and we prove that the only ones into 𝕊 m - 1 × and m - 1 × are the minimal isometric immersions of Riemannian surfaces. Furthermore, we show that the existence of a minimal isometric immersion of a Kähler manifold M 2 n into 𝕊 m - 1 × and 𝕊 m - k × k imposes strong restrictions on the Ricci and scalar curvatures of M 2 n . In this direction, we characterise some cases as either isometric immersions with parallel second fundamental form or anti-pluriharmonic isometric immersions.

MSC 2020: 53C42; 53B25; 32Q15

Communicated by Karin Melnick


Award Identifier / Grant number: 2019/177-0

Award Identifier / Grant number: G0H4518N

Funding statement: The first author was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), grant number 2019/177-0. The second author is partially supported by the Research Foundation-Flanders (FWO) and the Fonds de la Recherche Scientifique (FNRS), under EOS Project G0H4518N.

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Received: 2022-10-27
Published Online: 2023-06-01
Published in Print: 2023-11-01

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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