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초록
The object of the present paper is to study weakly B symmetric manifolds (WBS)n. At first some geometric properties of (WBS)(n)(n > 2) have been studied. Finally, we consider (WBS)(4) spacetimes. They turn out to be both perfect and imperfect fluids Robertson-Walker space-times : an equation of state is provided in the first case, and in the second the nature of the bulk viscosity pressure is pointed out. Also, we construct an example of a (WBS)(4).
키워드
weakly symmetric manifolds; pseudo B symmetric manifolds; weakly B symmetric manifolds; concircular and torse-forming vector field; generalized Robertson-Walker space-times; perfect fluids; equation of state; imperfect fluids; SPACETIMES; CURVATURE
- 제목
- On Weakly B Symmetric Pseudo Riemannian Manifolds and its Applications
- 저자
- Mantica, Carlo Alberto; De, Uday Chand; Suh, Young Jin
- 발행일
- 2021
- 유형
- Article
- 저널명
- Filomat
- 권
- 35
- 호
- 3
- 페이지
- 895 ~ 909
- 언어
- ENG
- 출판사
- UNIV NIS, FAC SCI MATH
- 발행국가
- 세르비아
- 분량
- 15 페이지
- ISSN
- E 2406-0933
P 0354-5180