The Maximal Rank Conjecture for general embedded curves

Fix integers g,r,dg,r,d with ρ(g,r,d)0\rho(g,r,d)\geq0, and let Id,g,r\mathfrak I_{d,g,r} be the Hilbert-scheme component whose general member is a smooth curve of degree dd and genus gg with general moduli. For an embedding CPrC\hookrightarrow\mathbb P^r, write νn(C)\nu_n(C) for the restriction map

νn(C):H0(Pr,OPr(n))H0(C,OC(n)).\nu_n(C):H^0(\mathbb P^r,\mathcal O_{\mathbb P^r}(n))\longrightarrow H^0(C,\mathcal O_C(n)).

Maximal Rank Conjecture. A general embedded smooth curve in Id,g,r\mathfrak I_{d,g,r} has maximal rank: for every integer n1n\geq1, νn(C)\nu_n(C) is injective or surjective.

This predicts the dimensions of hypersurfaces containing a general embedded curve and unifies classical maximal-rank phenomena with canonical syzygy conjectures. The source does not give a complete resolution.

Sources & referencesView supporting material

Primary source

Marian Aprodu and Gavril Farkas, “Koszul cohomology and applications to moduli”, arXiv:0811.3117 (2008).

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