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Search options not deleted user 36688
2 votes
2 answers
505 views

A strongly non-integrable distribution

What is an example of a three-dimensional smooth distribution $D$ of $\mathbb{R}^4$ with this property: Not only $D$ is not integrable but also there is no a two-dimensional foli …
Ali Taghavi's user avatar
3 votes
1 answer
311 views

Is there a $2$ dimensional foliation tangent to this particular $3$ dimensional distribution?

Is there a $2$- dimensional foliation of $\mathbb{R}^4\setminus \{0\}$ whose tangent space is contained in $\ker \alpha$ where $\alpha$ is the following non integrable $1$-form? $$\alpha=(x^2+y^2)dx+ …
Ali Taghavi's user avatar
7 votes
2 answers
536 views

A non integrable distribution which is totally geodesic

Is there a non integrable $2$ dimensional distribution $D$ of a $3$ dimensional Riemannian manifold such that the distribution is totally geodesic in the following sense: Every geodesic whose tang …
Ali Taghavi's user avatar
1 vote
0 answers
135 views

Integrability of distributions which are invariant under the isometry group

Let $(M.g)$ be a Riemannian manifold and $D$ is a distribution on $M$. Assume that $D$ is invariant under the action of the isometry group of $M$. Under which conditions such $D$ …
Ali Taghavi's user avatar
2 votes
1 answer
143 views

$2$ dimensional foliations of space whose leaves contain the trajectories of a given vector ...

As a related question: Is there a classification of all $1$-dimensional foliations of space tangent to the unit speed vector field $t$ for which the distributions $\{t,n\}$ and $\{t,b\}$ are integrable …
Ali Taghavi's user avatar
3 votes
1 answer
155 views

Obstructions for a foliation to be transformed to a Frenet foliation

Assume that we have a $1$ dimensional foliation of $\mathbb{R}^2$. Is there a global diffeomorphism of the plane which maps all leaves of the foliation to curves with non zero curvature? One can consi …
Ali Taghavi's user avatar
0 votes
1 answer
251 views

A non integrable distribution arising from a Lie algebra of vector fields

Is there an example of a $n$ dimensional manifold $M$ and a natural number $k<n$ with a Lie subalgebra $L$ of $\chi^{\infty}(M)$ with the following property: For every $x\in M$ the space $\{V_x \ …
Ali Taghavi's user avatar
4 votes
1 answer
169 views

On certain 2 dimensional foliation of $Gl(2,\mathbb{R})$ deleted by scalar matrices

Is there a Riemannian metric on $M$ such that the leaves of the above foliations are totally geodesic immersed submanifolds? …
Ali Taghavi's user avatar
1 vote
0 answers
83 views

Two codimension one foliations of a Lie group whose Godbilon–Vey invariants are not the same

What is an example of a Lie group $G$ with two codimension one foliations $F_1 $ and $F_2$ such that they generate two different Godbilon–Vey invariants in $H^3(G)$? …
Ali Taghavi's user avatar
2 votes
0 answers
183 views

Foliation values of a manifold

Let $M$ be a smooth n dimensional manifold. The foliation values of $M$, denoted by $F(M)$, is defined as \begin{equation} F(M)=\{ 1\leq k\leq n\mid \text{there exist an smooth $k$ dimensional fo …
Ali Taghavi's user avatar
1 vote
1 answer
206 views

Foliation values of Exotic spheres

In the following question, we defined the foliation values of an smooth manifold; Foliation values of a manifold Let $S_{i}$'s, $i\in \{0,1,\ldots,27\}$, be the smooth structures of topological $S^{ …
Ali Taghavi's user avatar
2 votes
1 answer
95 views

A 1 dimensional foliation of $\mathbb{R}^4$ with few compact leaves

Inspired by An algebraic Hamiltonian vector field with a finite number of periodic orbits (2) we ask if there is a 1 dimensional analytic foliation of $\mathbb{R}^4$ which has at least 1 compact l …
Ali Taghavi's user avatar
0 votes
0 answers
110 views

Integrability of the orthogonal complement of a holomorphic vector field on $\mathbb{C}^{2}$

Assume that $$\begin{cases}\dot x=P(x,y)\\\dot y=Q(x,y)\end{cases}$$ is a non vanishing holomorphic vector field on an open subset $U$ of $\mathbb{C}^{2}\simeq \mathbb{R}^{4}$. It defines a two dime …
Ali Taghavi's user avatar
1 vote
1 answer
260 views

A Lie algebra associated to a foliation(A kind of saturation of foliations)

Inspired by the Lie algebra discussed in this answer, we consider the following Lie agebra associated to a given foliation: Let $\mathcal{F}$ be a nontrivial foliation of a manifol …
Ali Taghavi's user avatar
3 votes
0 answers
177 views

Existence of compact leaf for certain foliation of a symplectic manifold

Is there a symplectic manifold $(M,\omega)$ equipped with a Riemannian metric such that $d^* \omega \wedge dd^*\omega=0$ and there is a compact leaf for the foliation of $M\setminus S$ defined by $d^ …
Ali Taghavi's user avatar

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