A. Sherif

activity

20182026

most citedSome Result on Cosmological and Astrophysical Horizons and Trapped Surfaces

18 citations · 74 across the 23 of their papers we have counts for

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math.DG2026

Conformal Killing--Yano Ricci solitons: Structure, compatibility, and rigidity

Mohammadjavad Habibivostakolaei, Abbas M. Sherif, Yen-Kheng Lim

We introduce a geometric structure -- a conformal Killing--Yano Ricci soliton (CKY--RS) -- that couples conformal Ricci soliton (CRS) geometry to conformal Killing--Yano (CKY) 2--f…

math.DG2025

Instability of marginally outer trapped surfaces from initial data set symmetry

Abbas M. Sherif

Let $(Σ ~, h_{ab}, K_{ab})$ be an initial data set and let $x^{a}$ be a symmetry vector of $Σ ~$ . Consider a MOTS $S$ in $Σ ~$ and let the symmetry vector be deco…

math.DG2021★ 3 cited

Conformal geometry on a class of embedded hypersurfaces in spacetimes

Abbas M. Sherif, Peter K. S. Dunsby

In this work, we study various properties of embedded hypersurfaces in $1 + 1 + 2$ decomposed spacetimes with a preferred spatial direction, denoted $e^{μ}$ , which are orthogonal to the…