Results 91 to 100 of about 769,852 (175)

Hilbert functions of Cohen -Macaulay modules

open access: yes, 2002
Let (A, [special characters omitted]) be a d-dimensional Noetherian local ring, M a finite Cohen-Macaulay A-module of dimension r and let I be an ideal of definition for M.
Puthenpurakal, Tony Joseph
core   +1 more source

Cohen-Macaulay modules over two-dimensional graph orders [PDF]

open access: yes, 1999
For a split graph order ℒ over a complete local regular domain $\cal O$ of dimension 2 the indecomposable Cohen-Macaulay modules decompose - up to irreducible projectives - into a union of the indecomposable Cohen-Macaulay modules over graph orders of ...
Roggenkamp, Klaus
core  

Higher Cohen-Macaulay property of squarefree modules and simplicial posets

open access: yes, 2011
Recently, G. Fløystad studied higher Cohen-Macaulay property of certain finite regular cell complexes. In this paper, we partially extend his results to squarefree modules, toric face rings, and simplicial posets.
Kohji Yanagawa
core   +1 more source

Some Characterizations of Relative Sequentially Cohen-Macaulay and Relative Cohen-Macaulay Modules

open access: yes, 2022
Let $M$ be an $R$-module over a Noetherian ring $R$ and $\mathfrak{a}$ be an ideal of $R$ with $c={\rm cd}(\mathfrak{a},M)$. First, we prove that $M$ is finite $\mathfrak{a}$-relative Cohen-Macaulay if and only if ${\rm H}_i(\Lambda_{\mathfrak{a}}({\rm H}
Zargar, Majid Rahro
core  

Categorical Torelli theorems: results and open problems. [PDF]

open access: yesRend Circ Mat Palermo, 2023
Pertusi L, Stellari P.
europepmc   +1 more source

Cohen-Macaulay multigraded modules

open access: yes, 2007
Let S be a standard N^r-graded algebra over a local ring A, and let M be a finitely generated Z^r-graded S-module. We characterize the Cohen-Macaulayness of M in terms of the vanishing of certain sheaf cohomology modules. As a consequence, we apply our result to study the Cohen-Macaulayness of multi-Rees modules (also called Rees modification).
Chan, C.-Y. Jean   +2 more
openaire   +3 more sources

Lim Cohen-Macaulay sequences of modules

open access: yes
We introduce the notion of a lim Cohen-Macaulay sequence of modules. We prove the existence of such sequences in positive characteristic, and show that their existence in mixed characteristic implies the long open conjecture about positivity of Serre ...
Ma, Linquan   +2 more
core  

Cohen-Macaulay Loci of modules

open access: yes, 2010
The Cohen-Macaulay locus of any finite module over a noetherian local ring $A$ is studied and it is shown that it is a Zariski-open subset of $\Spec A$ in certain cases. In this connection, the rings whose formal fibres over certain prime ideals are Cohen-Macaulay are studied.
Dibaei, Mohammad T., Jafari, Raheleh
openaire   +2 more sources

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