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Zhenhua Liu's user avatar
Zhenhua Liu's user avatar
Zhenhua Liu's user avatar
Zhenhua Liu
  • Member for 2 years, 7 months
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Top posts
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question
25
Does every oriented $3$-dimensional submanifold of $\mathbb{R}^6$ bound an oriented $4$-dimensional submanifold?
Oct 16
question
20
Integral homology classes that can be represented by immersed submanifolds but not embedded submanifolds
Aug 1, 2023
question
16
Is the oriented bordism ring generated by homogeneous spaces?
Nov 3, 2023
question
13
Compact closed aspherical manifolds with vanishing second homology in all the covering spaces
Mar 21, 2023
question
13
Realizing integral homology classes on non-orientable manifolds by embedded orientable submanifolds
Sep 23, 2023
question
13
Impossibility of realizing codimension 1 homology classes by embedded non-orientable hypersurfaces
Jan 27
question
12
Are the symmetric spaces $\operatorname{SU}(n)/{\operatorname{SO}(n)}$ always nontrivial in the bordism rings for $n>2$?
May 13, 2022
question
10
Are multiples of representable homology classes still representable by smooth submanifolds?
Jun 21, 2022
answer
9
Do minimal submanifolds minimize area locally?
May 16, 2023
question
8
Integral homology classes of which no multiples admit embedded representatives with trivial normal bundle
Jun 8, 2023
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16
Homologically trivial embedding of $\mathbb{CP}^2$ into a compact closed smooth $6$-manifold?