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比利时vs摩洛哥足彩
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比利时vs摩洛哥足彩
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university of california san diego
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math 292 - topology seminar
o\v{g}uz \c{s}avk
bo\v{g}azi\c{c}i university
classical and new plumbings bounding contractible manifolds and homology balls
abstract:
a central problem in low-dimensional topology asks which homology 3-spheres bound contractible 4-manifolds and homology 4-balls. in this talk, we address this problem for plumbed 3-manifolds and we present the classical and new results together. our approach is based on mazur’s famous argument which provides a unification of all results in a fairly simple way.
host: jianfeng lin
may 18, 2021
11:30 am
meeting id: 933 6734 4286 password: topology
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