Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Shyamal Kumar Hui"'
Publikováno v:
Journal of Inequalities and Applications, Vol 2024, Iss 1, Pp 1-16 (2024)
Abstract This article provides a Li–Yau-type gradient estimate for a semilinear weighted parabolic system of semilinear equations along an abstract geometric flow on a smooth measure space. A Harnack-type inequality on the system is also derived at
Externí odkaz:
https://doaj.org/article/087cfd3236c440fcbde092dbb1db8354
Autor:
Tanumoy Pal, Ibrahim Al-Dayel, Meraj Ali Khan, Biswabismita Bag, Shyamal Kumar Hui, Foued Aloui
Publikováno v:
AIMS Mathematics, Vol 9, Iss 7, Pp 17997-18012 (2024)
We began by considering invariant, anti-invariant, proper slant, and pointwise slant submanifolds of a Lorentzian concircular structure manifold. Subsequently, we explored two distinct categories of warped product submanifolds. The first category enc
Externí odkaz:
https://doaj.org/article/3261e33398c94db19a2f5ebde9aef84a
Publikováno v:
Axioms, Vol 13, Iss 5, p 332 (2024)
In this paper, we determine the variation formula for the first eigenvalue of (p,q)-biharmonic system on a closed Riemannian manifold. Several monotonic quantities are also derived.
Externí odkaz:
https://doaj.org/article/61131597ddd34436a7a7a1bb835ec640
Publikováno v:
Mathematics, Vol 12, Iss 8, p 1205 (2024)
In this paper, we investigate the sectional contravariant curvature of a doubly warped product manifold ( fB×bF,g˜,Π=ΠB+ΠF) equipped with a product Poisson structure Π, using warping functions and sectional curvatures of its factor manifolds (B
Externí odkaz:
https://doaj.org/article/e99abf26f1874edb809f168b79f168bc
Publikováno v:
Symmetry, Vol 16, Iss 2, p 190 (2024)
The main goal of this research paper is to investigate contact CR-warped product submanifolds within Sasakian space forms, utilizing a semi-symmetric metric connection. We conduct a comprehensive analysis of these submanifolds and establish several s
Externí odkaz:
https://doaj.org/article/dd94d216a1674ae388b105f11f49551c
Publikováno v:
AIMS Mathematics, Vol 7, Iss 4, Pp 7069-7092 (2022)
The objective of this paper is to achieve the inequality for Ricci curvature of a semi-slant warped product submanifold isometrically immersed in a generalized complex space form admitting a nearly Kaehler structure in the expressions of the squared
Externí odkaz:
https://doaj.org/article/b6ce33078d5747ef80e0572864f33619
Harnack Estimation for Nonlinear, Weighted, Heat-Type Equation along Geometric Flow and Applications
Publikováno v:
Mathematics, Vol 11, Iss 11, p 2516 (2023)
The method of gradient estimation for the heat-type equation using the Harnack quantity is a classical approach used for understanding the nature of the solution of these heat-type equations. Most of the studies in this field involve the Laplace–Be
Externí odkaz:
https://doaj.org/article/951a477a0b294407b9db53206757d1f6
Autor:
Shyamal Kumar Hui, Abimbola Abolarinwa, Meraj Ali Khan, Fatemah Mofarreh, Apurba Saha, Sujit Bhattacharyya
Publikováno v:
Mathematics, Vol 11, Iss 6, p 1364 (2023)
In this article we derive a Li–Yau-type gradient estimate for a generalized weighted parabolic heat equation with potential on a weighted Riemannian manifold evolving by a geometric flow. As an application, a Harnack-type inequality is also derived
Externí odkaz:
https://doaj.org/article/ecf7d98c0bf04558b42f40b01d3d50e5
Publikováno v:
Mathematics, Vol 10, Iss 23, p 4614 (2022)
In this paper, evolution formulas for the first non-zero eigenvalue of the operator LT,f on a weighted closed Riemannian manifold along the Ricci flow as well as along the Yamabe flow are formulated. Some monotonic quantities are also derived for the
Externí odkaz:
https://doaj.org/article/127acd06129141089771c545137212a4
Publikováno v:
International Journal of Mathematical, Engineering and Management Sciences, Vol 3, Iss 4, Pp 491-497 (2018)
The Yamabe soliton is a special soliton of Yamabe flow obtained by R. S. Hamilton, which was formulated due to Yamabe formula introduced by H. Yamabe in 1960. Recently Cao, Sun and Zhang introduced Yamabe gradient soliton. In this paper, the existenc
Externí odkaz:
https://doaj.org/article/31518f775ddf474cbbf181bb83eaa631