Pure exact structures and the pure derived category of a scheme

S Estrada, J Gillespie, S Odabaşi - Mathematical Proceedings of the …, 2017 - cambridge.org
… usual purity theory to this setting, yielding a λ-purity theory. And … complex Y ∈ C(Uco)(X))
dg-cotorsion if each Yn is cotorsion … (Flat(X)) is the class of complexes Y with each Yn cotorsion

Cut cotorsion pairs

M Huerta, O Mendoza, MA Pérez - Glasgow Mathematical Journal, 2022 - cambridge.org
… )-acyclic if the complex of abelian groups HomC(X•, Y) = (HomC(Xm, Y))m∈Z is exact for every
Y ∈ Y. HomC(Y, −)-acyclic complexestheory of (relative) cotorsion pairs appearing in [3]. …

Cotorsion pairs in comma categories

Y Yuan, J He, D Wu - arXiv preprint arXiv:2310.15840, 2023 - arxiv.org
… A complex I of injective objects is called totally acyclic if it is acyclic and HomA(E, I) is acyclic
… one has G ∼= Z0(I) for some totally acyclic complex I of injective objects in A. In what follows…

Universal Deformation Rings for Complexes over Finite-Dimensional Algebras

JA Velez-Marulanda - arXiv preprint arXiv:1703.08569, 2017 - arxiv.org
… V^\bullet$ is a bounded complex whose terms are all finitely generated Gorenstein
projective … complexes whose terms are finitely generated Gorenstein projective $\Lambda$-modules. …

Exact categories and infinite tilting

W Rump - Communications in Algebra, 2021 - Taylor & Francis
… Coming from a cotorsion pair, we call it a C-tilting module. For … Recall that a complex (2)
is said to be acyclic if it is … The complexes which are isomorphic to an acyclic complex form a …

Cartan-Eilenberg Gorenstein projective N-complexes

B Lu - Communications in Algebra, 2021 - Taylor & Francis
complexes has important applications in theoretical physics, quantum theory and representation
theory … In 2011, Enochs studied Cartan-Eilenberg projective, injective and flat complexes

Coherent rings, fp-injective modules, dualizing complexes, and covariant Serre–Grothendieck duality

L Positselski - Selecta Mathematica, 2017 - Springer
… the flat cotorsion theory in the category of modules over an associative ring and the very flat
cotorsion theory … others, play an important role in the theory of contraherent cosheaves [20]. …

[HTML][HTML] K-flatness in Grothendieck categories: application to quasi-coherent sheaves

S Estrada, J Gillespie, S Odabaşi - Collectanea Mathematica, 2024 - Springer
… but useful result concerning cotorsion pairs and direct limits (… the class of all acyclic
complexes of geometric pure injective (\(\… the case of K-flat and pure acyclic complexes. Again, \((\…

Quasi-coherent torsion sheaves, the semiderived category, and the semitensor product: Semi-infinite algebraic geometry of quasi-coherent sheaves on ind-schemes

L Positselski - arXiv preprint arXiv:2104.05517, 2021 - arxiv.org
… X on X is an acyclic complex! 0.9. Let us have a more detailed … [49], we consider a flat affine
morphism of ind-schemes π: Y −→ X. … We discuss the basics of the theory of (strict ind-quasi-…

Homotopy in exact categories

J Kelly - 2024 - ams.org
… In this monograph we develop various aspects of the homotopy theory of exact categories. …
on categories of chain complexes ChpEq which are induced by cotorsion pairs on E. As a …