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A relation between Compact boundaryless Manifolds (also called closed Manifolds). Two closed Manifolds are bordant Iff their disjoint union is the boundary of a compact $(n+1)$-Manifold. Roughly, two Manifolds are bordant if together they form the boundary of a Manifold. The word bordism is now used in place of the original term Cobordism.


Budney, R. ``The Bordism Project.''

© 1996-9 Eric W. Weisstein