Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Bahman Rezaei"'
Publikováno v:
AUT Journal of Mathematics and Computing, Vol 4, Iss 2, Pp 123-128 (2023)
The Ricci curvature is introduced by spray on $M^n$. Sprays are deformed to projective sprays with a volume form $dV$ on $M^n$. The projective Ricci curvature is defined as the expression of Ricci curvature with sprays. With this paper, we use the ne
Externí odkaz:
https://doaj.org/article/c5772858c8a641e081f9cf7e842e1a64
Autor:
Babak Kaviani Sourki, Bahman Rezaei
Publikováno v:
نثرپژوهی ادب فارسی, Vol 24, Iss 50, Pp 107-132 (2022)
The Sa’di researchers have often assumed the tales of the Golestan to be “real or semi-real incidents” and, then, interpreted the tales in line with this assumption. For instance, they have considered the internal genre of the tale of “Faqih
Externí odkaz:
https://doaj.org/article/769c9623552940fc9683249fd19f7c7c
Autor:
Samaneh Sadat Saberali, Bahman Rezaei
Publikováno v:
پژوهشهای ریاضی, Vol 7, Iss 3, Pp 573-584 (2021)
Randers metrics are the most important class of Finsler metrics which is defined by a Riemannian metric and a 1-form as . In this paper, the concept of geodesic circle preserve transformations in Finslerian space is studied and the weak Einstein Rand
Externí odkaz:
https://doaj.org/article/6bbe8478614a48ffa0672f2834d5f422
Publikováno v:
پژوهشهای ریاضی, Vol 7, Iss 4, Pp 878-888 (2021)
In 2016, Prof. Shen et al. studied one of the most important warped structures of Finsler metrics and investigated Einstein type of the metrics. In this paper, we first compute the E-curvature of the metrics and characterize Finsler warped product me
Externí odkaz:
https://doaj.org/article/b1889bfca7f54fbe9408b9296505218e
Autor:
Laya Ghasemnezhad, Bahman Rezaei
Publikováno v:
پژوهشهای ریاضی, Vol 6, Iss 2, Pp 295-304 (2020)
An important class of Finsler metric is named Kropina metrics which is defined by Riemannian metric α and 1-form β which have many applications in physic, magnetic field and dynamic systems. In this paper, conformal transformations of χ-curvature
Externí odkaz:
https://doaj.org/article/144c64e635d943f8870f6e8bff154f7e
Publikováno v:
پژوهشهای ریاضی, Vol 3, Iss 3, Pp 105-112 (2017)
projective Ricci curvature. Then we characterize isotropic projective Ricci curvature of Randers metrics. we also show that Randers metrics are PRic-reversible if and only if they are PRic-quadratic../files/site1/files/0Abstract2.pdf
Externí odkaz:
https://doaj.org/article/2956941962cd46939236dca77c2421ba
Autor:
Mehdi Rafie-Rad, Bahman Rezaei
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 7, p 085 (2011)
The collection of all projective vector fields on a Finsler space (M,F) is a finite-dimensional Lie algebra with respect to the usual Lie bracket, called the projective algebra denoted by p(M,F) and is the Lie algebra of the projective group P(M,F).
Externí odkaz:
https://doaj.org/article/3f8f46c3512b4aa8a4004b713e7a5fe7
Publikováno v:
Proceedings of the National Academy of Sciences, India Section A: Physical Sciences. 92:585-591
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9665d5c479b7075ff62a336b93841731
https://doi.org/10.1007/s40010-022-00774-z
https://doi.org/10.1007/s40010-022-00774-z
Autor:
Bahman Rezaei, Samaneh Saberali
Publikováno v:
Bulletin of the Iranian Mathematical Society. 47:1173-1185
In this paper, we study a class of Finsler metrics called general $$(\alpha ,\beta )$$ -metrics, which are defined by a Riemannian metric and a 1-form. These metrics form a rich class of Finsler metrics. Suppose that $$F=\alpha \phi (b^{2},s)$$ is a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e07fa31cc07b01f0143e138aadaac3bd
https://doi.org/10.1007/s41980-020-00434-1
https://doi.org/10.1007/s41980-020-00434-1
Autor:
Bahman Rezaei, Mehran Gabrani
Publikováno v:
Bulletin of the Iranian Mathematical Society. 46:53-65
Finsler metrics of quadratic curvatures form a rich and important class of metrics. In this paper, we study spherically symmetric metrics of quadratic curvatures. We find equations that characterize R-quadratic spherically symmetric Finsler metrics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5cc3c78b9ec4bf4d7d04c84a9d3ee7c5
https://doi.org/10.1007/s41980-019-00240-4
https://doi.org/10.1007/s41980-019-00240-4