BAGARIA, J., Carles CASACUBERTA, A. R. D. MATHIAS and Jiří ROSICKÝ. Definable orthogonality classes in accessible categories are small. Journal of the European Mathematical Society. 2015, vol. 17, No 3, p. 549-589. ISSN 1435-9855. Available from: https://dx.doi.org/10.4171/JEMS/511.
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Basic information
Original name Definable orthogonality classes in accessible categories are small
Name in Czech Definovatelné třídy ortogonality v akcesibilních kategoriích jsou malé
Authors BAGARIA, J. (724 Spain), Carles CASACUBERTA (724 Spain), A. R. D. MATHIAS (826 United Kingdom of Great Britain and Northern Ireland) and Jiří ROSICKÝ (203 Czech Republic, guarantor, belonging to the institution).
Edition Journal of the European Mathematical Society, 2015, 1435-9855.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10101 Pure mathematics
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.950
RIV identification code RIV/00216224:14310/15:00082613
Organization unit Faculty of Science
Doi http://dx.doi.org/10.4171/JEMS/511
UT WoS 000352496300004
Keywords in English supercompact cardinal; extendible cardinal; Lévy hierarchy; accessible category; reflective subcategory
Tags AKR, rivok
Changed by Changed by: Ing. Andrea Mikešková, učo 137293. Changed: 5/4/2016 14:33.
Abstract
We lower substantially the strength of the assumptions needed for the validity of certain results in category theory and homotopy theory which were known to follow from Vopěnka's principle. We prove that the necessary large-cardinal hypotheses depend on the complexity of the formulas defining the given classes, in the sense of the Lévy hierarchy.
Abstract (in Czech)
Podstatně snižujeme sílu předpokladů potřebných pro platnost určitých výsledků v teorii kategorií a teorii homotopií, o nichž bylo známo. že plynou z Vopěnkova principu. Ukazujeme, že potřebné předpoklady o velkých kardinálech závisí na složitosti definujících formulí ve smyslu Lévyho hierarchie.
Links
MSM0021622409, plan (intention)Name: Matematické struktury a jejich fyzikální aplikace
Investor: Ministry of Education, Youth and Sports of the CR, Mathematical structures and their physical applications
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