$\lambda$ -presentable Morphisms, Injectivity and (Weak) Factorization Systems

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ar X iv : m at h / 05 09 31 8 v 1 [ m at h . C T ] 1 4 Se p 20 05 λ - PRESENTABLE MORPHISMS , INJECTIVITY AND ( WEAK ) FACTORIZATION SYSTEMS

We show that every λm-injectivity class (i.e., the class of all the objects injective with respect to some class of λ-presentable morphisms) is a weakly reflective subcategory determined by a functorial weak factorization system cofibrantly generated by a class of λ-presentable morphisms. This was known for small-injectivity classes, and referred to as the “small object argument”. An analogous ...

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ژورنال

عنوان ژورنال: Applied Categorical Structures

سال: 2006

ISSN: 0927-2852,1572-9095

DOI: 10.1007/s10485-006-9024-9