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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 is a simple homotopy equivalence (as in an ''s''-cobordism) but the inclusion 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)』 ■ウィキペディアで「Semi-s-cobordism」の詳細全文を読む
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