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20122026
most citedExplicit harmonic and spectral analysis in Bianchi I-VII type cosmologies

11 citations · 54 across the 23 of their papers we have counts for

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math.AP2026

Very weak solutions of the heat equation with anisotropically singular time-dependent diffusivity

Zhirayr Avetisyan, Zahra Keyshams, Monire Mikaeili Nia +1

We investigate the heat equation with a time-dependent, anisotropic, and potentially singular diffusivity tensor. Since weak (in the Sobolev sense) or distributional solutions may…

math.AP2025

Very weak solutions of the heat equation with anisotropically singular time-dependent diffusivity

Zhirayr Avetisyan, Zahra Keyshams, Monire Mikaeili Nia +1

We investigate the heat equation with a time-dependent, anisotropic, and potentially singular diffusivity tensor. Since weak (in the Sobolev sense) or distributional solutions may…

math.AP2025

Exponential decay estimates for the resolvent kernel on a Riemannian manifold

Zhirayr Avetisyan

On a complete, connected, non-compact Riemannian manifold, with Ricci curvature bounded from below, we establish exponential decay estimates at infinity for the spherical sums of t…

math.AP2024

Parabolic equations with concave non-linearity

Zhirayr Avetisyan, Khachatur Khachatryan, Michael Ruzhansky

In this paper we prove the existence and uniqueness of positive mild solutions for the semilinear parabolic equations of the form , where is a p…

math.AP2020

Rigidity of a thin domain depends on the curvature, width, and boundary conditions

Zhirayr Avetisyan, Davit Harutyunyan, Narek Hovsepyan

This paper is concerned with the study of linear geometric rigidity of shallow thin domains under zero Dirichlet boundary conditions on the displacement field on the thin edge of t…