An explicit self-dual construction of complete cotorsion pairs in the relative context

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F23%3A00571081" target="_blank" >RIV/67985840:_____/23:00571081 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.4171/rsmup/118" target="_blank" >https://doi.org/10.4171/rsmup/118</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4171/RSMUP/118" target="_blank" >10.4171/RSMUP/118</a>

Result language

angličtina

Original language name

An explicit self-dual construction of complete cotorsion pairs in the relative context

Original language description

Let R → A be a map of associative rings, and let (F,C) be a hereditary complete cotorsion pair in R−Mod. Let (FA,CA) be the cotorsion pair in A−Mod in which FA is the class of all left A-modules whose underlying R-modules belong to F. Assuming that the F-resolution dimension of every left R-module is finite and the class F is preserved by the coinduction functor Hom⁡R(A,−), we show that CA is the class of all direct summands of left A-modules finitely (co)filtered by A-modules coinduced from R-modules from C. If the class F is closed under countable products and preserved by the functor Hom⁡R(A,−), we prove that CA​ is the class of all direct summands of left A-modules cofiltered by A-modules coinduced from R-modules from C, with the decreasing filtration indexed by the natural numbers. A combined result is also obtained. As an illustration of the main results of the paper, we consider certain cotorsion pairs related to the contraderived and coderived categories of curved DG-modules.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10101 - Pure mathematics

Project

<a href="/en/project/GA20-13778S" target="_blank" >GA20-13778S: Symmetries, dualities and approximations in derived algebraic geometry and representation theory</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Rendiconti del Seminario Matematico della Universita di Padova

ISSN

0041-8994

e-ISSN

2240-2926

Volume of the periodical

149

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

63

Pages from-to

191-253

UT code for WoS article

000980736000008

EID of the result in the Scopus database

2-s2.0-85159139827