Gilberto Bini,
Fabio Felici,
Margarida Melo,
Filippo Viviani
e.a.
Geometric Invariant Theory for Polarized Curves
Paperback Engels 2014 2014e druk 9783319113364Levertijd ongeveer 9 werkdagen
Gratis verzonden
Samenvatting
We investigate GIT quotients of polarized curves. More specifically, we study the GIT problem for the Hilbert and Chow schemes of curves of degree d and genus g in a projective space of dimension d-g, as d decreases with respect to g. We prove that the first three values of d at which the GIT quotients change are given by d=a(2g-2) where a=2, 3.5, 4. We show that, for a>4, L. Caporaso's results hold true for both Hilbert and Chow semistability. If 3.5
Specificaties
ISBN13:9783319113364
Taal:Engels
Bindwijze:paperback
Aantal pagina's:211
Uitgever:Springer International Publishing
Druk:2014
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Inhoudsopgave
Introduction.- Singular Curves.- Combinatorial Results.- Preliminaries on GIT.- Potential Pseudo-stability Theorem.- Stabilizer Subgroups.- Behavior at the Extremes of the Basic Inequality.- A Criterion of Stability for Tails.- Elliptic Tails and Tacnodes with a Line.- A Strati_cation of the Semistable Locus.- Semistable, Polystable and Stable Points (part I).- Stability of Elliptic Tails.- Semistable, Polystable and Stable Points (part II).- Geometric Properties of the GIT Quotient.- Extra Components of the GIT Quotient.- Compacti_cations of the Universal Jacobian.- Appendix: Positivity Properties of Balanced Line Bundles.
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