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math.DG2025
Almost Ricci Solitons on Class Hypersurfaces of Product Spaces
Ahmet Umut Çoraplı, Burcu Bektaş Demirci, Nurettin Cenk Turgay
In this paper, we study hypersurfaces in the product spaces for which the tangential component of the vector field $\frac{\partial}{\partial…
math.DG2024
Surfaces in Robertson-Walker Space-Times with Positive Relative Nullity
Burcu Bektaş Demirci, Nurettin Cenk Turgay
In this article, we study space-like and time-like surfaces in a Robertson-Walker space-time,, denoted by , having positive relative nullity. First, we give the necessa…
math.DG2022
Isometric Timelike Surfaces in 4--Dimensional Minkowski Space
Burcu Bektaş Demirci, Murat Babaarslan, Yasin Küçükarikan
In this paper, first we study on Bour's theorem for four kinds of timelike helicoidal surfaces in 4-dimensional Minkowski space. Secondly, we analyse the geometric properties of th…