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Semi-s-cobordism : ウィキペディア英語版
Semi-s-cobordism

In mathematics, a cobordism (''W'', ''M'', ''M'') of an (''n'' + 1)-dimensionsal manifold (with boundary) ''W'' between its boundary components, two ''n''-manifolds ''M'' and ''M'', is called a semi-''s''-cobordism if (and only if) the inclusion M \hookrightarrow W is a simple homotopy equivalence (as in an ''s''-cobordism) but the inclusion M^- \hookrightarrow W is not a homotopy equivalence at all.
==Other notations==
the original creator of this topic, Jean-Claude Hausmann, used the notation ''M'' for the right-hand boundary of the cobordism.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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