Publication details
Uncountable orthogonality is a closure property
| Authors | |
|---|---|
| Year of publication | 2001 |
| Type | Article in Periodical |
| Magazine / Source | Buletin of the London Mathematical Society |
| MU Faculty or unit | |
| Citation | |
| Field | General mathematics |
| Keywords | locally presentable category; orthogonality class |
| Description | It is shown that, for k uncountable, k-orthogonality classes in locally k-presentable categories coincide with full subcategories that are closed under limits and k-directed colimits. This comes as a surprise, since the statement is known to be false for k countable. |
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