Editing Constructibility (section)

== Mathematics ==
* [[Compass-and-straightedge construction]]
* [[Constructible point]], a point in the Euclidean plane that can be constructed with compass and straightedge
* [[Constructible number]], a complex number associated to a constructible point
* [[Constructible polygon]], a regular polygon that can be constructed with compass and straightedge
* [[Constructible sheaf]], a certain kind of sheaf of abelian groups
* [[Constructible set (topology)]], a finite union of locally closed sets
* [[Constructible topology]], a topology on the spectrum of a commutative ring y in which every closed set is the image of Spec(''B'') in Spec(''A'') for some algebra ''B'' over ''A''
* [[Constructible universe]], Kurt Gödel's model ''L'' of set theory, constructed by transfinite recursion
* [[Constructible function]], a function whose values can be computed in a number of steps or a number of Turing-machine cells of order given by the function itself

{{disambiguation}}
[[Category:Mathematics disambiguation pages]]