Výsledky vyhledávání - "Casas José A."

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A non-abelian tensor product of algebras with bracket

Autor: Casas, José Manuel, Khmaladze, Emzar, Ladra, Manuel

We introduce and study a non-abelian tensor product of two algebras with bracket with compatible actions on each other. We investigate its applications to the universal central extensions and the low-dimensional homology of perfect algebras with brac

Externí odkaz: http://arxiv.org/abs/2407.09158

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Cosmic Insights from Galaxy Clusters: Exploring Magnification Bias on Sub-millimeter Galaxies

Autor: Fernández-Fernández, Rebeca, Bonavera, Laura, Crespo, David, González-Nuevo, Joaquín, Cueli, Marcos M., Casas, José Manuel, Cabo, Sara R.

Publikováno v: A&A 685, A155 (2024)

Magnification bias, an observational effect of gravitational lensing in the weak regime, allows testing the cosmological model through angular correlations of sources at different redshifts. This effect has been observed in various contexts, particul

Externí odkaz: http://arxiv.org/abs/2403.03855

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Wells type exact sequence and crossed extensions of algebras with bracket

Autor: Casas, José Manuel, Khmaladze, Emzar, Ladra, Manuel

We study the extensibility problem of a pair of derivations associated with an abelian extension of algebras with bracket, and derive an exact sequence of the Wells type. We introduce crossed modules for algebras with bracket and prove their equivale

Externí odkaz: http://arxiv.org/abs/2307.15636

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Methodological refinement of the submillimeter galaxy magnification bias. I. Cosmological analysis with a single redshift bin

Autor: Cueli, Marcos M., González-Nuevo, Joaquín, Bonavera, Laura, Lapi, Andrea, Crespo, David, Casas, José Manuel

The main goal of this work, the second in a three-paper series, is to test the impact of a methodological improvement in measuring the magnification bias signal on a sample of submillimeter galaxies and its implications for constraining cosmological

Externí odkaz: http://arxiv.org/abs/2305.13835

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