# Constructions of factorization systems in categories

@article{Bousfield1977ConstructionsOF,
title={Constructions of factorization systems in categories},
author={Aldridge Knight Bousfield},
journal={Journal of Pure and Applied Algebra},
year={1977},
volume={9},
pages={207-220}
}
• A. K. Bousfield
• Published 1977
• Mathematics
• Journal of Pure and Applied Algebra
In [2] we constructed homological localizations of spaces, groups, and 17"modules; here we generalize those constructions to give "factorization systems" and "homotopy factorization systems" for maps in categories. In Section 2 we recall the definition and basic properties of factorization systems, and in Section 3 we give our first existence theorem (3.1)for such systems. It can be viewed as a generalization of Deleanu's existence theorem [5] for localizations, and is best possible although it… Expand
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