List questions from differential-topology

Published on 27 Mar 2026 - 13:25

63

Views

Connected boundary implies $\pi_1(M,\partial M)=0$.

Published on 17 Apr 2019 - 23:29

205

Views

Tangent Map of an Isometry and the Shape Operator

Published on 25 Mar 2026 - 4:39

97

Views

Are real linear maps of smooth sections locally determined?

Published on 26 Mar 2026 - 22:53

41

Views

Local extendability of structure functor of A-germs of embeddings on a differential manifold

Published on 19 Apr 2019 - 13:24

67

Views

Is the normal bundle construction idempotent?

Published on 26 Mar 2026 - 22:50

44

Views

A description of the map between Grassmanians $G_1^k \rightarrow G_k$,

Published on 25 Mar 2026 - 7:45

624

Views

Understanding the idea of a pseudo-gradient vector field

Published on 27 Mar 2026 - 6:07

1.1k

Views

Find $f$ such that $f^{-1}(\lbrace0\rbrace)$ is this knotted curve (M.W.Hirsh)

Published on 25 Mar 2026 - 7:45

334

Views

Do the two manifolds intersect at a submanifold

Published on 22 Apr 2019 - 23:05

54

Views

What is really being asked by "Prove that $S^1 ⊂ R^2$ is a sub manifold"?

Published on 30 Mar 2026 - 13:40

173

Views

Is a $C^1$ immersion that is injective on a closed set $K$ injective on a neighborhood of $K$?

Published on 25 Apr 2019 - 6:03

437

Views

Level sets diffeomorphic if no critical point lies in between

Published on 25 Mar 2026 - 7:42

102

Views

Condition for a submanifold of complex Euclidean space to be analytic

Published on 28 Mar 2026 - 10:35

1.1k

Views

What is an example of an embedding which is not proper?

Published on 26 Apr 2019 - 9:58

List Question

Tangent vectors as equivalence classes of triples and ordinary vectors

Connected boundary implies $\pi_1(M,\partial M)=0$.

Tangent Map of an Isometry and the Shape Operator

Are real linear maps of smooth sections locally determined?

Local extendability of structure functor of A-germs of embeddings on a differential manifold

Is the normal bundle construction idempotent?

A description of the map between Grassmanians $G_1^k \rightarrow G_k$,

Understanding the idea of a pseudo-gradient vector field

Find $f$ such that $f^{-1}(\lbrace0\rbrace)$ is this knotted curve (M.W.Hirsh)

Do the two manifolds intersect at a submanifold

What is really being asked by "Prove that $S^1 ⊂ R^2$ is a sub manifold"?

Is a $C^1$ immersion that is injective on a closed set $K$ injective on a neighborhood of $K$?

Level sets diffeomorphic if no critical point lies in between

Condition for a submanifold of complex Euclidean space to be analytic

What is an example of an embedding which is not proper?

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