2 problems

Bressan's uniqueness conjecture for constrained second-order differential equations
arXiv@arxiv
A constrained second-order differential equation of the type considered in the paper may have multiple solutions even when the external force is smooth. Bressan's uniqueness conjec…
Conjectureopenconstrained-dynamics differential-equations
0
Existence of Cartesian vector fields for constrained Lagrangian systems
arXiv@arxiv
Let $\textsc{Q}$ be the configuration space, let $\lambda_k$ be the functions defining the system, and let … for $j=M+1,\ldots,N$ . A vector field is called Cartesian if it generate…
Conjectureopenconstrained-dynamics nonholonomic-mechanics partial-differential-equations
0

Bressan's uniqueness conjecture for constrained second-order differential equations