N. Shirmohammadi

activity

20112026

collaborators

5 papers

math.RA2026

On monoid graded semihereditary rings

Haneen Falah Ghalib Al-Kharsan, Parviz Sahandi, Nematollah Shirmohammadi

In order to study graded left hereditary and left semihereditary rings graded by a cancelation monoid in terms of their modules, we need to revisit graded free, projective, injecti…

math.AC2025

On graded going-down domains, II

Parviz Sahandi, Nematollah Shirmohammadi

In this paper we consider the graded going-down property of graded integral domains in pullbacks. It then enables us to give original examples of these domains.

math.AC2023

On graded Going down domains

Parviz Sahandi, Nematollah Shirmohammadi

Let $Γ$ be a torsionless commutative cancellative monoid and $R = ⨁_{α \in Γ} R_{α}$ be a $Γ$ -graded integral domain. In this paper, we introduce the notion of graded going-down…

math.FA2016

On Amalgamated Banach algebras

Hasan Pourmahmood Aghababa, Nematollah Shirmohammadi

Let $A$ and $B$ be Banach algebras, $θ : A \to B$ be a continuous Banach algebra homomorphism and $I$ be a closed ideal in $B$ . Then the direct sum of $A$ and $I$ with respect to $θ$ …

math.AC2011

Tameness and Artinianness of Graded Generalized Local Cohomology Modules

M. Jahangiri, N. Shirmohammadi, Sh. Tahamtan

Let $R = ⨁_{n \geq 0} R_{n}$ , $\fa\supseteq \bigoplus_{n> 0}R_n$ and $M$ and $N$ be a standard graded ring, an ideal of $R$ and two finitely generated graded $R$ -modules, respect…