Results 61 to 70 of about 122,406 (140)

A General Type of Almost Contact Manifolds [PDF]

open access: yes
Among almost contact manifolds Sasakian manifolds, Kenmotsu manifolds (called also “a certain class of almost contact manifolds”) and cosymplectic manifolds have been studied by many authors.
Catalin Angelo Ioan
core  

On totally real submanifolds

open access: yes, 1974
Complex analytic submanifolds and totally real submanifolds are two typical classes among all submanifolds of an almost Hermitian manifold. In this paper, some characterizations of totally real submanifolds are given.
Koichi Ogiue, Bang-yen Chen
core   +1 more source

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

100 years of mathematical cosmology: Models, theories, and problems, Part A. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

PARALLEL SUBMANIFOLDS OF THE REAL 2-GRASSMANNIAN [PDF]

open access: yes
A submanifold of a Riemannian symmetric space is called parallel if its second fundamental form is parallel. We classify parallel submanifolds of the Grassmannian G_2^+ (R^) which parameterizes the oriented 2-planes of the Euclidean space R^.
Jentsch, Tillmann
core   +1 more source

Constant isotropic submanifolds with 4-planar geodesics

open access: yes, 1988
Let f f be an isometric immersion of a Riemannian manifold M M into M ¯ \overline M .
Kunio Sakamoto, Jin Suk Pak
core   +1 more source

Ruelle Zeta Function from Field Theory. [PDF]

open access: yesAnn Henri Poincare, 2020
Hadfield C, Kandel S, Schiavina M.
europepmc   +1 more source

Nonlinear flag manifolds as coadjoint orbits. [PDF]

open access: yesAnn Glob Anal Geom (Dordr), 2020
Haller S, Vizman C.
europepmc   +1 more source

Low Dimensional Isotropic Submanifolds [PDF]

open access: yes, 2002
设Mn+p(c)是单连通空间形式 ,Mn(n 4)是Mn+p 中具有常平均曲率H的紧致连通迷向子流形 ;本文证得如下结果 :若M的截面曲率KM n2 (n+1) (H2 +c) ,则M是全脐的或是Mn+p 中某个全脐超曲面中的Veronese流形Suppose that M n(n4) is an isotropic submanifold in M n+p(c) with contant neam curvature H.It is proved that if the sectional ...
李锦堂
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