List questions from differential-topology

Published on 16 Apr 2026 - 22:08

117

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Conifolds and Exotic Spheres

Published on 15 Apr 2026 - 19:11

853

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What are monomorphisms in the category of real vector bundles over a fixed base space $X$?

Published on 16 Apr 2026 - 11:10

1.1k

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Let $S$ be a regular surface and let $F$ be a diffeomorphism. How can I prove that the image $F(S)$ is a regular surface?

Published on 16 Apr 2026 - 11:20

3.4k

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Diffeomorphism between a sphere and ellipsoid in $\mathbb R^3$.

Published on 10 Apr 2026 - 13:57

365

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Differential forms - looking for 3 definitions!

Published on 12 Apr 2026 - 23:17

379

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Different definitions of differential forms?

Published on 13 Apr 2026 - 14:20

479

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How to prove that the tangent map $T\phi$ into the pullback bundle is smooth?

Published on 16 Apr 2026 - 7:16

40

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On critical values of a linear function $g:SO_2\times \mathbb R^2\to \mathbb R^2$

Published on 14 Apr 2026 - 11:39

751

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The biggest degree of a map between fixed surfaces

Published on 10 Apr 2026 - 21:59

1.2k

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Why is the conjugate momentum $p(x,x')=\partial_2 L(x,x')$ an element of the cotangent space?

Published on 15 Apr 2026 - 20:43

1.3k

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immersion of punctured torus in plane

Published on 11 Apr 2026 - 11:51

93

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Induced bundles and Smooth Maps

Published on 13 Apr 2026 - 23:10

1.1k

Views

Why would one care about Fibre Bundles

Published on 12 Apr 2026 - 23:10

128

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Embed $S^{p} \times S^q$ in $S^d$?

Published on 17 Apr 2026 - 1:21

List Question

What does "orthogonal complement" mean in Milnor's Topology from the Differentiable Viewpoint?

Conifolds and Exotic Spheres

What are monomorphisms in the category of real vector bundles over a fixed base space $X$?

Let $S$ be a regular surface and let $F$ be a diffeomorphism. How can I prove that the image $F(S)$ is a regular surface?

Diffeomorphism between a sphere and ellipsoid in $\mathbb R^3$.

Differential forms - looking for 3 definitions!

Different definitions of differential forms?

How to prove that the tangent map $T\phi$ into the pullback bundle is smooth?

On critical values of a linear function $g:SO_2\times \mathbb R^2\to \mathbb R^2$

The biggest degree of a map between fixed surfaces

Why is the conjugate momentum $p(x,x')=\partial_2 L(x,x')$ an element of the cotangent space?

immersion of punctured torus in plane

Induced bundles and Smooth Maps

Why would one care about Fibre Bundles

Embed $S^{p} \times S^q$ in $S^d$?

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