e/Mazur manifold

Information
has gloss	eng: In differential topology, a branch of mathematics, a Mazur manifold is a contractible, compact, smooth 4-dimensional manifold which is not diffeomorphic to the standard 4-ball. The boundary of a Mazur manifold is necessarily a homology 3-sphere.
lexicalization	eng: Mazur manifold
instance of	(noun) a set of points such as those of a closed surface or an analogue in three or more dimensions manifold