User R Mary

17 votes

3 answers

1k views

Nice things that can be proved easily with characteristic classes

asked May 19, 2016 at 20:12

8 votes

0 answers

285 views

Connection between integrable systems and group actions

asked Jan 9, 2018 at 12:55

7 votes

0 answers

500 views

intuitive connection between The KdV equations and the Virasoro bott group

asked Apr 24, 2016 at 19:15

7 votes

2 answers

944 views

Volume of manifolds embedded in $\mathbb{R}^n$

asked Mar 6, 2019 at 14:09

6 votes

1 answer

480 views

Non-Hamiltonian actions in physics

asked Sep 26, 2018 at 19:47

5 votes

1 answer

227 views

Which compact (finite dimensional) Lie groups have $H^1_{DR}(G)\neq 0$

asked Apr 18, 2018 at 9:44

4 votes

1 answer

235 views

Contradiction between fixed points of a hamiltonian diffeomorphism of a torus and quasi-periodic motion on a torus

asked Jul 7, 2017 at 22:20

4 votes

0 answers

63 views

Choosing a complementary Lie subalgebra well

asked Apr 7, 2020 at 15:29

3 votes

1 answer

278 views

Interpretation of the Schouten bracket as an integrability condition

asked Dec 4, 2018 at 8:55

3 votes

2 answers

467 views

Symplectic vector fields everywhere transverse to a co-dimension one hypersurface

asked Mar 3, 2019 at 14:51

3 votes

1 answer

335 views

Symplectic submanifolds of cotangent bundles of Lie groups

asked Oct 31, 2017 at 14:29

3 votes

1 answer

395 views

Is it difficult or easy to find non-symplectomorphic symplectic forms on a manifold?

asked Apr 4, 2017 at 10:15

3 votes

1 answer

458 views

Is there an easy example of group action where the slice theorem produces a non-trivial principal bundle?

asked Feb 16, 2018 at 15:47

3 votes

0 answers

194 views

If the sum of everywhere linearly independent vector fields are periodic, are the component vector fields periodic?

asked Jun 3, 2018 at 15:06

3 votes

2 answers

304 views

The integrals of things looking like $e^{(\frac{a}{z}+\frac{b}{z-c})}$ on closed contours

asked May 31, 2019 at 16:12

2 votes

0 answers

100 views

Effective actions by non-commutative groups have non-commuting fundamental vector fields?

asked Jul 6, 2018 at 14:15

2 votes

0 answers

491 views

How to make sense of the Euler Lagrange equations for an infinite action?

asked Feb 16, 2018 at 9:28

2 votes

0 answers

118 views

Embeddings of the configuration space into the phase space of integrable systems

asked Jun 30, 2017 at 22:33

1 vote

0 answers

65 views

Reference request for poisson group actions which are not hamiltonian

asked Nov 21, 2017 at 21:00

1 vote

1 answer

438 views

The holonomy map associated to a mapping torus

asked Apr 19, 2018 at 14:30

1 vote

0 answers

109 views

Transverse $S^1$ actions on mapping tori

asked May 19, 2018 at 22:18

1 vote

0 answers

161 views

Is every hyperplane distribution in $\mathbb{R}^n$ given by a nowhere vanishing one form?

asked Sep 17, 2019 at 12:31

1 vote

0 answers

209 views

Intuition for the Liouville one-form restricted to the unit cotangent-bundle

asked Sep 19, 2019 at 15:25

1 vote

0 answers

64 views

A "singular" Tischler theorem

asked Mar 27, 2020 at 9:17

Stack Exchange Network

24 Questions

Nice things that can be proved easily with characteristic classes

Connection between integrable systems and group actions

intuitive connection between The KdV equations and the Virasoro bott group

Volume of manifolds embedded in $\mathbb{R}^n$

Non-Hamiltonian actions in physics

Which compact (finite dimensional) Lie groups have $H^1_{DR}(G)\neq 0$

Contradiction between fixed points of a hamiltonian diffeomorphism of a torus and quasi-periodic motion on a torus

Choosing a complementary Lie subalgebra well

Interpretation of the Schouten bracket as an integrability condition

Symplectic vector fields everywhere transverse to a co-dimension one hypersurface

Symplectic submanifolds of cotangent bundles of Lie groups

Is it difficult or easy to find non-symplectomorphic symplectic forms on a manifold?

Is there an easy example of group action where the slice theorem produces a non-trivial principal bundle?

If the sum of everywhere linearly independent vector fields are periodic, are the component vector fields periodic?

The integrals of things looking like $e^{(\frac{a}{z}+\frac{b}{z-c})}$ on closed contours

Effective actions by non-commutative groups have non-commuting fundamental vector fields?

How to make sense of the Euler Lagrange equations for an infinite action?

Embeddings of the configuration space into the phase space of integrable systems

Reference request for poisson group actions which are not hamiltonian

The holonomy map associated to a mapping torus

Transverse $S^1$ actions on mapping tori

Is every hyperplane distribution in $\mathbb{R}^n$ given by a nowhere vanishing one form?

Intuition for the Liouville one-form restricted to the unit cotangent-bundle

A "singular" Tischler theorem