Duality of (2,3,5)-distributions and Lagrangian cone structures

TL;DR

This paper explores the duality between (2,3,5)-distributions and Lagrangian cone structures on 5-dimensional manifolds, providing characterizations, examples, and completing the duality via pseudo-product structures of type G_2.

Contribution

It characterizes Lagrangian cone structures corresponding to (2,3,5)-distributions and completes the duality via pseudo-product structures of type G_2.

Findings

Characterization of Lagrangian cone structures for (2,3,5)-distributions

Completion of the duality via pseudo-product structures of type G_2

Examples of non-flat perturbations of the flat model

Abstract

As was shown by a part of the authors, for a given $(2, 3, 5)$-distribution $D$ on a $5$-dimensional manifold $Y$, there is, locally, a Lagrangian cone structure $C$ on another $5$-dimensional manifold $X$ which consists of abnormal or singular paths of $(Y, D)$. We give a characterization of the class of Lagrangian cone structures corresponding to $(2, 3, 5)$-distributions. Thus we complete the duality between $(2, 3, 5)$-distributions and Lagrangian cone structures via pseudo-product structures of type $G_2$. A local example of non-flat perturbations of the global model of flat Lagrangian cone structure which corresponds to $(2,3,5)$-distributions is given.