e/Formal manifold

Information
has gloss	eng: In geometry and topology, a formal manifold can mean one of a number of related concepts: * In the sense of Dennis Sullivan, a formal manifold is one whose real homotopy type is a formal consequence of its real cohomology ring; algebro-topologically this means that all Massey products vanish. * A stronger notion is a geometrically formal manifold, which is the condition that all wedge products of harmonic forms are harmonic.
lexicalization	eng: formal manifold
instance of	(noun) a set of points such as those of a closed surface or an analogue in three or more dimensions manifold