Classification theory
Classification theory
**Classification theory** may refer to:
* For the task of allocating things to classes or categories reliably, see [Classification](/wiki/Classification "Classification")
* For the task of devising classes or categories (and potentially then allocating things to them), see [Taxonomy](/wiki/Taxonomy_%28general%29 "Taxonomy (general)") and [Library science](/wiki/Library_science "Library science")
* For the science of finding, describing and categorising organisms see [alpha taxonomy](/wiki/Alpha_taxonomy "Alpha taxonomy")
* For classification theory in biology see [Biological classification](/wiki/Biological_classification "Biological classification")
* For classification theory in mathematical model theory see [stable theory](/wiki/Stable_theory "Stable theory")


What is classification theory?