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Displaying 321 – 340 of 348

Costruzione di un universo di dispositivi ciclicamente monotoni massimali

Stefano Testa (1977)

Rendiconti del Seminario Matematico della Università di Padova

Costruzione di un universo di dispositivi non lineari su una coppia di gruppi abeliani

F. Parodi (1977)

Rendiconti del Seminario Matematico della Università di Padova

Cotorsion modules for torsion theories

Henderson, J., Orzech, M. (1977)

Portugaliae mathematica

Cotorsion pairs in comma categories

Yuan Yuan, Jian He, Dejun Wu (2024)

Czechoslovak Mathematical Journal

Let $𝒜$ and $ℬ$ be abelian categories with enough projective and injective objects, and $T : 𝒜 \to ℬ$ a left exact additive functor. Then one has a comma category $(ℬ ↓ T)$ . It is shown that if $T : 𝒜 \to ℬ$ is $𝒳$ -exact, then $(^{⊥} 𝒳, 𝒳)$ is a (hereditary) cotorsion pair in $𝒜$ and $(^{⊥} 𝒴, 𝒴)$ ) is a (hereditary) cotorsion pair in $ℬ$ if and only if $((\binom{^{⊥} 𝒳}{^{⊥} 𝒴})), 〈 𝐡 (𝒳, 𝒴) 〉)$ is a (hereditary) cotorsion pair in $(ℬ ↓ T)$ and $𝒳$ and $𝒴$ are closed under extensions. Furthermore, we characterize when special preenveloping classes in abelian categories $𝒜$ and $ℬ$ can induce special preenveloping classes...

Counting measure for Kuratowski finite parts and decidability

Busiso P. Chisala, Mbila-Mambu Mawanda (1991)

Cahiers de Topologie et Géométrie Différentielle Catégoriques

Covariant constructions in the theory of linear differential equations

František Neuman (1986)

Časopis pro pěstování matematiky

Covariant presheaves and subalgebras.

Höhle, Ulrich (2011)

Theory and Applications of Categories [electronic only]

Covollständigkeit vollständiger Kategorien.

Walter Tholen, D. Pumplün (1973/1974)

Manuscripta mathematica

Critères de rigidification des morphismes souples entre structures internes

R. Guitart, C. Lair (1981)

Diagrammes

Crossed complexes, and free crossed resolutions for amalgamated sums and HNN-extensions of groups.

Brown, R., Moore, E.J., Porter, T., Wensley, C.D. (2002)

Georgian Mathematical Journal

Crossed extensions of algebras and Hochschild cohomology.

Baues, Hans-Joachim, Minian, Elias Gabriel (2002)

Homology, Homotopy and Applications

Crossed modules as $G$ -categories

Robert Gordon (1993)

Cahiers de Topologie et Géométrie Différentielle Catégoriques

Crossed modules, Crossed n-fold extension of groups and Cohomology theory in Abstract Categories

George Danas (1999)

Δελτίο της Ελληνικής Μαθηματικής Εταιρίας

Crossed modules in $C a t$ and a Brown-Spencer theorem for $2$ -categories

Timothy Porter (1985)

Cahiers de Topologie et Géométrie Différentielle Catégoriques

Crossed n-folds extensions of groups and cohomology.

Johannes Huebschmann (1980)

Commentarii mathematici Helvetici

Crossed semimodules and Schreier internal categories in the category of monoids.

Patchkoria, A. (1998)

Georgian Mathematical Journal

Crossed squares and 2-crossed modules of commutative algebras.

Arvasi, Zekeri̇ya (1997)

Theory and Applications of Categories [electronic only]

Crystalline Dieudonné module theory via formal and rigid geometry

A. J. De Jong (1995)

Publications Mathématiques de l'IHÉS

Cuadrados especiales en la categoría de álgebras de Lie.

Daniel Tarazona (1982)

Stochastica

In this paper the concepts of mixed cartesian square and quasi-cocartesian square, already known in the category of groups, are adapted to the category of Lie algebras. These concepts can be used in the study of the obstructions of Lie algebra extensions in the same way that Wu has studied the obstructions of group extensions.

Cubical Abelian groups with connections are equivalent to chain complexes.

Brown, Ronald, Higgins, Philip J. (2003)

Homology, Homotopy and Applications

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