closed

As adjectives the difference between closed and symplectic

is that closed is sealed, made inaccessible or impassable; not open while symplectic is (mathematics) describing the geometry of differentiable manifolds equipped with a closed, nondegenerate.

As a verb closed

is (close).

As an adjective closed

is sealed, made inaccessible or impassable; not open.

As a verb closed

is past tense of close.

As a noun subalgebra is

a closed subset of an algebra.

As adjectives the difference between closed and heegaard

is that closed is sealed, made inaccessible or impassable; not open while heegaard is related to a closed 3-dimensional manifold's being the identification of two handlebodies]] along their respective [[boundary|boundaries.

As a verb closed

is (close).

Closed is a synonym of endorheic.

As adjectives the difference between closed and endorheic

is that closed is sealed, made inaccessible or impassable; not open while endorheic is (of a lake or basin) internally drained; having no outlet.

As a verb closed

is (close).