List questions from symplectic-geometry

Published on 10 May 2026 - 20:49

443

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When are almost complex structures tame?

Published on 10 May 2026 - 11:13

504

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Moment map for Hamiltonian action $\Bbb S^1 \circlearrowright \Bbb C^n$.

Published on 14 Apr 2026 - 22:19

98

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How does a choice of linearisation of a line bundle fix a moment map?

Published on 10 May 2026 - 15:23

384

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Kähler form and the condition of positive definiteness

Published on 10 May 2026 - 15:24

132

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Symplectic reduction of a linear symplectic space.

Published on 09 Apr 2026 - 4:12

121

Views

contact geometry good reference

Published on 11 May 2026 - 3:23

173

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Consider symplectic vector fields $X,Y$ and a symplectic connection $\nabla$. Is $\nabla_{X}Y$ symplectic?

Published on 10 May 2026 - 13:50

377

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Tautological $1$-form does not depend on coordinates.

Published on 11 Apr 2026 - 5:39

119

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The dual Lie algebra in the context of Hamiltonian action

Published on 13 Apr 2026 - 7:56

243

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Euler field is invariant under the cotangent lift

Published on 11 May 2026 - 3:46

231

Views

If $F^*\alpha=\alpha$, then $F$ is the cotangent lift of some $\phi$

Published on 16 Apr 2026 - 14:01

1k

Views

Darboux theorem for $2$-dimensional manifolds

Published on 10 Apr 2026 - 16:56

129

Views

Pulling back symplectic structure to $TQ$ - why is a certain term (not) zero?

Published on 13 Apr 2026 - 13:29

311

Views

$df_1,...,df_k$ linearly independent $\Rightarrow \frac{\omega^n}{n!}=df_1\wedge...\wedge df_k\wedge\sigma$

Published on 16 Apr 2026 - 11:26

List Question

Recommendation for intro to geometric integrators?

When are almost complex structures tame?

Moment map for Hamiltonian action $\Bbb S^1 \circlearrowright \Bbb C^n$.

How does a choice of linearisation of a line bundle fix a moment map?

Kähler form and the condition of positive definiteness

Symplectic reduction of a linear symplectic space.

contact geometry good reference

Consider symplectic vector fields $X,Y$ and a symplectic connection $\nabla$. Is $\nabla_{X}Y$ symplectic?

Tautological $1$-form does not depend on coordinates.

The dual Lie algebra in the context of Hamiltonian action

Euler field is invariant under the cotangent lift

If $F^*\alpha=\alpha$, then $F$ is the cotangent lift of some $\phi$

Darboux theorem for $2$-dimensional manifolds

Pulling back symplectic structure to $TQ$ - why is a certain term (not) zero?

$df_1,...,df_k$ linearly independent $\Rightarrow \frac{\omega^n}{n!}=df_1\wedge...\wedge df_k\wedge\sigma$

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