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Article Dans Une Revue Bulletin of the American Mathematical Society Année : 2024

A survey of the homology cobordism group

Résumé

In this survey, we present most recent highlights from the study of the homology cobordism group, with a particular emphasis on its long-standing and rich history in the context of smooth manifolds. Further, we list various results on its algebraic structure and discuss its crucial role in the development of low-dimensional topology. Also, we share a series of open problems about the behavior of homology 3-spheres and the structure of Θ 3 Z. Finally, we briefly discuss the knot concordance group C and the rational homology cobordism group Θ 3 Q , focusing on their algebraic structures, relating them to Θ 3 Z , and highlighting several open problems. The appendix is a compilation of several constructions and presentations of homology 3-spheres introduced by Brieskorn, Dehn, Gordon, Seifert, Siebenmann, and Waldhausen.
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hal-04370963 , version 1 (03-01-2024)

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Oğuz Şavk. A survey of the homology cobordism group. Bulletin of the American Mathematical Society, 2024, 61 (1), pp.119-157. ⟨10.1090/bull/1806⟩. ⟨hal-04370963⟩

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