In set theory, a branch of mathematics, a set A is called transitive if either of the following equivalent conditions hold:

In linguistic typology, transitive alignment is a type of morphosyntactic alignment used in a small number of languages in which a single grammatical case is used to mark both arguments of a transitive verb, but not with the single argument of an intransitive verb. Such a situation, which is quite rare among the world's languages, has also been called a double-oblique clause structure.

In geometry, a tessellation of dimension 2 (a plane tiling) or higher, or a polytope of dimension 3 (a polyhedron) or higher, is isohedral or face-transitive if all its faces are the same. More specifically, all faces must be not merely congruent but must be transitive, i.

Transitive set

In set theory, a branch of mathematics, a set $A$ is called **transitive** if either of the following equivalent conditions hold:

- whenever $x\in A$, and $y\in x$, then $y\in A$.
- whenever $x\in A$, and $x$ is not an urelement, then $x$ is a subset of $A$.

Similarly, a class $M$ is transitive if every element of $M$ is a subset of $M$.