Zobrazeno 1 - 10
of 77
pro vyhledávání: '"U-Hang Ki"'
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 20, Iss 1, Pp 115-122 (1997)
In this paper, under certain conditions on the orthogonal distribution 𝒟, we give a characterization of real hypersurfaces of type A in quaternionic projective space QPm.
Externí odkaz:
https://doaj.org/article/4a43cf1619e54aee95f5f82fb0c63742
Autor:
U-Hang Ki, Young Ho Kim
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 19, Iss 1, Pp 39-44 (1996)
Totally real submanifolds of a complex space form are studied. In particular, totally real submanifolds of a complex number space with parallel mean curvature vector are classified.
Externí odkaz:
https://doaj.org/article/86cf4dca52c84a44b166fe9d3b0e64b1
Autor:
U-HANG KI1 uhangki2005@naver.com, HYUNJUNG SONG2 hsong@hufs.ac.kr
Publikováno v:
Kyungpook Mathematical Journal. Mar2022, Vol. 62 Issue 1, p133-166. 34p.
Autor:
TAE YONG HWANG1 hhhpppl995@naver.com, U-HANG KI2 uhangki2005@naver.com, HIROYUKI KURIHARA3 hiroyuki.kurihara.math@vc.ibaraki.ac.jp
Publikováno v:
Kyungpook Mathematical Journal. Dec2016, Vol. 56 Issue 4, p1207-1235. 29p.
Publikováno v:
Kyungpook mathematical journal. 56:1207-1235
Autor:
U-HANG KI1 uhangki2005@naver.com, SOO JIN KIM2 ee12372@naver.com, HIROYUKI KURIHARA3 hiroyuki.kurihara.math@vc.ibaraki.ac.jp
Publikováno v:
Kyungpook Mathematical Journal. Jun2016, Vol. 56 Issue 2, p541-575. 35p.
Autor:
U-Hang Ki, Hiroyuki Kurihara
Publikováno v:
Tsukuba J. Math. 42, no. 2 (2018), 127-154
Let $M$ be a real hypersurface in a complex space form $M_n(c)$, $c \not= 0$. In this paper, we prove that if the structure Jacobi operator $R_\xi$ is $\phi\nabla_{\xi}\xi$-parallel and $R_\xi$ commute with the Ricci tensor, then $M$ is a Hopf hypers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6a2787077c22bffeca0269e00416056
https://projecteuclid.org/euclid.tkbjm/1554170419
https://projecteuclid.org/euclid.tkbjm/1554170419
Autor:
U-Hang Ki1 uhangki2005@yahoo.co.kr, Young Jin Suh2 yjsuh@knu.ac.kr
Publikováno v:
Kyungpook Mathematical Journal. 2008, Vol. 48 Issue 3, p433-442. 10p.
Publikováno v:
Kyungpook Mathematical Journal. 2006, Vol. 46 Issue 4, p463-476. 14p.
Autor:
Hiroyuki Kurihara, U-Hang Ki
Publikováno v:
Advances in Pure Mathematics. :264-276
Let M be a real hypersurface of a complex space form with almost contact metric structure (φ,ξ,η,g). In this paper, we prove that if the structure Jacobi operator Rξ=(·,ξ) ξ is φ▽ξξ-parallel and Rξ commute with the shape operator, then M