Pith. sign in

REVIEW

Generically, Arnold-Liouville Systems Cannot be Bi-Hamiltonian

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2105.11123 v2 pith:SP3X6DRG submitted 2021-05-24 math.DG

classification math.DG
keywords arnold-liouvillebi-hamiltoniansystemsbh-separablecannotfunctionsgenericallyhamiltonians
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

We state and prove that a certain class of smooth functions said to be BH-separable is a meagre subset for the Fr\'echet topology. Because these functions are the only admissible Hamiltonians for Arnold-Liouville systems admitting a bi-Hamiltonian structure, we get that, generically, Arnold-Liouville systems cannot be bi-Hamiltonian. At the end of the paper, we determine, both as a concrete representation of our general result and as an illustrative list, which polynomial Hamiltonians $H$ of the form $H(x,y)=xy+ax^3+bx^2y+cxy^2+dy^3$ are BH-separable.

Discussion (0). Continue with ORCID to comment.

Pith tools