List questions from differential-geometry

Published on 12 Apr 2018 - 9:24

448

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Lie derivative formula for time dependent differential forms.

Published on 12 Apr 2018 - 10:30

977

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Is $SO(n)$ a normal subgroup of $SO(n+1)$?

Published on 25 Mar 2026 - 12:33

245

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Why does Liouville-Arnold theorem fail on separatrix level sets?

Published on 25 Mar 2026 - 4:37

37

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What does it mean for the differential of one function to be "independent"?

Published on 02 Apr 2026 - 23:58

81

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Smooth curve with trace $\lvert x \rvert$

Published on 25 Mar 2026 - 9:24

405

Views

An affine bundle has a global section?

Published on 25 Mar 2026 - 16:39

1.2k

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Find all tangent planes of an ellipsoid which are parallel to $span \{[0,5,0],[1,5,-1]\}$

Published on 12 Apr 2018 - 18:30

1.5k

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Proof details of the fact that the unit tangent bundle is compact in $TM$ if $M$ is a compact manifold

Published on 24 Mar 2026 - 22:07

234

Views

Equivalence between function being Morse and $df$ being transversal to zero section.

Published on 26 Mar 2026 - 2:49

266

Views

Calculate principal curvature of an hypersurface

Published on 25 Mar 2026 - 3:03

342

Views

Surfaces which are diffeomorphic

Published on 13 Apr 2018 - 3:54

181

Views

trouble understanding Moser theorem

Published on 26 Mar 2026 - 0:58

690

Views

Lift of vector field in smooth manifold

Published on 25 Mar 2026 - 12:33

91

Views

link between symplectic characterisation and isotropic or symplectic subspaces

Published on 03 Apr 2026 - 15:24

List Question

Significance of the n-differential forms

Lie derivative formula for time dependent differential forms.

Is $SO(n)$ a normal subgroup of $SO(n+1)$?

Why does Liouville-Arnold theorem fail on separatrix level sets?

What does it mean for the differential of one function to be "independent"?

Smooth curve with trace $\lvert x \rvert$

An affine bundle has a global section?

Find all tangent planes of an ellipsoid which are parallel to $span \{[0,5,0],[1,5,-1]\}$

Proof details of the fact that the unit tangent bundle is compact in $TM$ if $M$ is a compact manifold

Equivalence between function being Morse and $df$ being transversal to zero section.

Calculate principal curvature of an hypersurface

Surfaces which are diffeomorphic

trouble understanding Moser theorem

Lift of vector field in smooth manifold

link between symplectic characterisation and isotropic or symplectic subspaces

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