Constructibility or constructability may refer to: *

Constructability Constructability (or buildability) is a concept that denotes ease of construction. It can be central to project management techniques to review construction processes from start to finish during pre-construction phase. Buildability assessment is ...

or construction feasibility review, a process in construction design whereby plans are reviewed by others familiar with construction techniques and materials to assess whether the design is actually buildable * Constructible strategy game, a tabletop strategy game employing pieces assembled from components

Mathematics

Compass-and-straightedge construction In geometry, straightedge-and-compass construction – also known as ruler-and-compass construction, Euclidean construction, or classical construction – is the construction of lengths, angles, and other geometric figures using only an ideali ...

* Constructible point, a point in the Euclidean plane that can be constructed with compass and straightedge *

Constructible number In geometry and algebra, a real number r is constructible if and only if, given a line segment of unit length, a line segment of length , r, can be constructed with compass and straightedge in a finite number of steps. Equivalently, r is cons ...

, a complex number associated to a constructible point *

Constructible polygon In mathematics, a constructible polygon is a regular polygon that can be constructed with compass and straightedge. For example, a regular pentagon is constructible with compass and straightedge while a regular heptagon is not. There are infinite ...

, a regular polygon that can be constructed with compass and straightedge *

Constructible sheaf In mathematics, a constructible sheaf is a sheaf of abelian groups over some topological space ''X'', such that ''X'' is the union of a finite number of locally closed subsets on each of which the sheaf is a locally constant sheaf. It has its orig ...

, a certain kind of sheaf of abelian groups * Constructible set (topology), a finite union of locally closed sets *

Constructible topology In commutative algebra, the constructible topology on the spectrum \operatorname(A) of a commutative ring A is a topology where each closed set is the image of \operatorname (B) in \operatorname(A) for some algebra ''B'' over ''A''. An important fe ...

, 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 Mathematics disambiguation pages