List questions from differential-topology

Published on 02 Apr 2020 - 6:11

36

Views

Slice disks with only a minimum are bounded by the unknot

Published on 26 Mar 2026 - 19:15

472

Views

Unknot: embedded vs immersed bounding disk

Published on 25 Mar 2026 - 6:57

27

Views

Can we put a flat metric on any subset of $\mathbb{R}^D$ that's diffeomorphic to an open subset on $\mathbb{R}^d, d < D?$ (just checking!)

Published on 03 Apr 2026 - 21:18

65

Views

Is the following problem equivalent to the embedding problem?

Published on 04 Apr 2020 - 12:17

136

Views

Compactness of a Lie subgroup of SU(n)

Published on 04 Apr 2020 - 23:34

517

Views

Open sets on a circle

Published on 05 Apr 2020 - 10:08

25

Views

Diffeomorphism between different regions of the disk

Published on 28 Mar 2026 - 20:07

52

Views

Change of coordinates when first partial derivative is nonzero

Published on 06 Apr 2020 - 22:54

449

Views

Confusion on the orientability of the unit circle $\mathbb{S}^{1}$.

Published on 28 Mar 2026 - 20:11

94

Views

Viewing Manifolds as Embedded in Euclidean Space

Published on 25 Mar 2026 - 7:42

166

Views

Orientation flip diffeomorphism from $M\times N$ to $N\times M$.

Published on 28 Mar 2026 - 20:07

567

Views

de Rham cohomology with compact support isomorphic to $\mathbb{R}$

Published on 26 Mar 2026 - 17:31

100

Views

Existence of a transversal map prevents density?

Published on 25 Mar 2026 - 14:22

279

Views

Why isn't every vector bundle morphism an isomorphism?

Published on 29 Mar 2026 - 13:39

List Question

Classification of surfaces using point set topology

Slice disks with only a minimum are bounded by the unknot

Unknot: embedded vs immersed bounding disk

Can we put a flat metric on any subset of $\mathbb{R}^D$ that's diffeomorphic to an open subset on $\mathbb{R}^d, d < D?$ (just checking!)

Is the following problem equivalent to the embedding problem?

Compactness of a Lie subgroup of SU(n)

Open sets on a circle

Diffeomorphism between different regions of the disk

Change of coordinates when first partial derivative is nonzero

Confusion on the orientability of the unit circle $\mathbb{S}^{1}$.

Viewing Manifolds as Embedded in Euclidean Space

Orientation flip diffeomorphism from $M\times N$ to $N\times M$.

de Rham cohomology with compact support isomorphic to $\mathbb{R}$

Existence of a transversal map prevents density?

Why isn't every vector bundle morphism an isomorphism?

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