Mohsen Asgharzadeh

  1. Some remarks on big Cohen-Macaulay algebras via closure operations.

    Authors: Mohsen Asgharzadeh, Rajsekhar Bhattacharyya
    Subjects: Commutative Algebra
    Abstract

    In this note we present some remarks on big Cohen-Macaulay algebras. Our
    methods for doing this are inspired by the notion of dagger closure and by
    ideas of Northcott on dropping of the Noetherian assumption of certain
    homological properties.

  2. Homological properties of the perfect and absolute integral closures of Noetherian domains.

    Authors: Mohsen Asgharzadeh
    Subjects: Commutative Algebra
    Abstract

    For a Noetherian local domain $R$ let $R^+$ be the absolute integral closure
    of $R$ and let $R_{\infty}$ be the perfect closure of $R$, when $R$ has prime
    characteristic. In this paper we investigate the projective dimension of
    residue rings of certain ideals of $R^+$ and $R_{\infty}$. In particular, we
    show that any prime ideal of $R_{\infty}$ has a bounded free resolution of
    countably generated free $R_{\infty}$-modules. Also, we show that the analogue
    of this result is true for the maximal ideals of $R^+$, when $R$ has residue
    prime characteristic.

Syndicate content