manuscripta mathematica

, Volume 58, Issue 3, pp 381-384

First online:

A pullback theorem for cofibrations

  • R. W. KieboomAffiliated withDepartment of Mathematics, Vrije Universiteit Brussel

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In this note we prove a pullback theorem for cofibrations, which extends a well known theorem of Strøm [5]. It also implies the pullback theorem of Heath [4] for locally equiconnected spaces. In addition, we comment on the dual problem of attaching fibrations.