Mistretta–Stoppino gonality-bound conjecture for non-complete linear series

Let CC be an irreducible projective smooth complex curve, let LL be a line bundle on CC, and let VH0(C,L)V\subseteq H^0(C,L) define a base point free non-complete linear series. Let MV,LM_{V,L} be its dual span bundle, defined by

0MV,LVOCL0.0\longrightarrow M_{V,L}\longrightarrow V\otimes\mathcal O_C\longrightarrow L\longrightarrow 0.

Let γ\gamma denote the gonality of CC. Mistretta–Stoppino's gonality-bound conjecture. If

deg(L)γ(dim(V)1),\deg(L)\leq\gamma\bigl(\dim(V)-1\bigr),

then linear (semi)stability of (L,V)(L,V) is equivalent to (semi)stability of MV,LM_{V,L}.

This conjecture is formulated after counterexamples above the gonality bound. The source gives no resolution status.

Sources & referencesView supporting material

Primary source

Abel Castorena, George H. Hitching and Erick Luna, “Linear stability of coherent systems and applications to Butler's conjecture”, arXiv:2312.09309 (2023).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.