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Leonard R. Rubin
Proceedings of the American Mathematical Society
Vol. 55, No. 1 (Feb., 1976), pp. 181-184
Published by: American Mathematical Society
Stable URL: http://www.jstor.org/stable/2041868
Page Count: 4
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It was proved by Morton Brown that the boundary of a manifold has a collar neighborhood. Later Robert Connelly gave a different proof of that result, and his method of proof was used by T. Benny Rushing to prove a relative collaring theorem. This paper contains a relative collaring theorem that is more general than either of the two just mentioned.
Proceedings of the American Mathematical Society © 1976 American Mathematical Society