9
votes

Accepted

### Almost but not quite a Lie algebroid: what is it?

José, after your last comment, I am pretty sure that you are simply in the presence of a Jacobi structure on a nontrivial line bundle. Most of what I write below is taken from this paper by Crainic ...

- 566

7
votes

### Is every singular foliation induced by a Lie algebroid?

It is possible to define the Lie groupoid of a singular foliation and associates to it its Lie algebroid when it is smooth. This Lie algebroid satisfies the property 2.
https://projecteuclid.org/...

- 3,586

5
votes

### Is every singular foliation induced by a Lie algebroid?

For Stefan-Sussmann singular foliations, the answer is negative: See Prop. 1.3 in the following paper, for the construction of an explicit counterexample:
http://users.uoa.gr/~iandroul/...

- 51

4
votes

Accepted

### Is $\mathbb{P}^1$ the only smooth projective curve with a locally split tangent lie algebroid?

If $f: X \to \mathbb A^n$ is an etale map, then we can pull back vector fields on $\mathbb A^n$ to vector fields on $X$. This pullback operation is a lie algebroid homomorphism. Hence if we pull back ...

- 122k

4
votes

### Connection between Grothendieck's homotopy hypothesis and Lie's second and third theorems?

There are analogues of Lie's theorems in homotopy theory, primarily for rational and $p$-adic homotopy types, as well as Lie ∞-groupoids, which can be seen as smooth homotopy types.
In the rational ...

- 32.5k

3
votes

Accepted

### Use of theory of Lie algebroids in (better) understanding of generalised complex structures

The compatibility conditions that you mention in the definition of a generalized complex structure are equivalent to the statement that the $+i$-eigenbundle $L$ of $J$ is a complex Dirac structure:
...

- 421

3
votes

### references to learn the general theory Lie $\infty$-groupoids and Lie $\infty$-algebroids

There is no introductory book on Lie ∞-groupoids and ∞-algebroids analogous to Mackenzie's book.
The only book-length treatment that covers these subjects is Urs Schreiber's Differential cohomology in ...

- 32.5k

3
votes

### Lie algebroid in algebraic geometry

I suggest having a look at
Beĭlinson, A.; Bernstein, J. A proof of Jantzen conjectures.
MR: Matches for: MR=1237825
§1.2 .
https://people.math.harvard.edu/~gaitsgde/grad_2009/BB%20-%20Jantzen.pdf

- 3,763

2
votes

Accepted

### Poisson structure on the dual Lie algebroid

Depending on you sign convention, this goes as follows. First you denote the bundle projection by $pr\colon E^* \longrightarrow X$. For a section $s \in \Gamma^\infty(E)$ you have a linear function $J(...

- 7,549

2
votes

Accepted

### Property of Lie algebroid morphism: $\#_B\circ \Phi=d\phi\circ \#_A$?

A vector is determined by its action on functions as a directional derivative. This is just the Lie derivative in degree $0$ mentioned at the end of $(iii)$. Together with the naturality $(ii)$ of $d$ ...

- 6,334

2
votes

Accepted

### Lie algebroid associated to a vector bundle

Question 1. The two procedures indeed give the same Lie algebroid. One possible way of seeing this is by considering the flows of vector fields: a section of $T(GL(E))/GL(n)$ is a vector field on the ...

- 421

2
votes

### Example of tensor category with non-simple unit $J\to \mathbb{1} \to Q$ and suitably extension $Q\to M\to J$

In general, if $N$ is a finitely generated $S$-module, and $J$ is an ideal with $JN=N$, it is a standard fact that there exists $u\in J$ with $(1-u)N=0$. (This is one incarnation of Nakayama's Lemma.)...

- 51.1k

1
vote

### Special cases of Lie II for groupoids using elementary techniques

I suspect you've probably figured it out by now but here is an answer anyway:
Here is a sketch of the most low-tech way of accomplishing the task.
First, there is a bijection between groupoid ...

1
vote

### Lie Groupoid of a Transitive Lie algebroid

If the base manifold M is connected, and A is such a Lie algebroid then the only orbit of A is M itself. It turns out that one can always find a Lie groupoid (called the Weinstein groupoid by Crainic &...

- 49

1
vote

### AKSZ sigma models for higher spin

I am not sure exactly what you are after, but the combination of keywords brings this article here to mind:
K.B. Alkalaev, Maxim Grigoriev, E.D. Skvortsov, Uniformizing higher-spin equations arXiv:...

- 19k

1
vote

### A-Paths as morphisms of Lie Algebroids $TI\longrightarrow A$?

You may find it useful to look at Lectures on the Integrability of Lie Brackets by the same authors. I believe it takes a slower approach to the subject you seem to be reading about.
As for the ...

- 318

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