Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Novelli, Carla"'
Autor:
Lanteri, Antonio, Novelli, Carla
Let $Y$ be a smooth projective variety of dimension $n \geq 2$ endowed with a finite morphism $\phi:Y \to \mathbb P^n$ of degree $3$, and suppose that $Y$, polarized by some ample line bundle, is a scroll over a smooth variety $X$ of dimension $m$. T
Externí odkaz:
http://arxiv.org/abs/2310.13987
Autor:
Lanteri, Antonio, Novelli, Carla
Publikováno v:
Rendiconti del Circolo Matematico di Palermo (Series 2); Oct2024, Vol. 73 Issue 6, p2257-2275, 19p
Autor:
Novelli, Carla, Urbinati, Stefano
Given a closed subvariety Y of a n-dimensional torus, we study how the tropical line bundles of Trop(Y) can be induced by line bundles living on a tropical compactification of Y in a toric variety, following the construction of Jenia Tevelev. We then
Externí odkaz:
http://arxiv.org/abs/1504.03827
Let X be a Fano variety of index k such that the non-klt locus Nklt(X) is not empty. We prove that Nklt(X) has dimension at least k-1 and equality holds if and only if Nklt(X) is a linear projective space P^{k-1}. In this case X has lc singularities
Externí odkaz:
http://arxiv.org/abs/1309.5342
Autor:
Höring, Andreas, Novelli, Carla
We prove a relative version of the theorem of Cho, Miyaoka and Shepherd-Barron: a Mori fibre space of maximal length is birational to a projective bundle.
Comment: 12 pages, changed metadata
Comment: 12 pages, changed metadata
Externí odkaz:
http://arxiv.org/abs/1201.4009
Autor:
Novelli, Carla
We study Fano manifolds $X$ admitting an unsplit dominating family of rational curves and we prove that the Generalized Mukai Conjecture holds if $X$ has pseudoindex $i_X = (\dim X)/3$ or dimension $\dim X=6$. We also show that this conjecture is tru
Externí odkaz:
http://arxiv.org/abs/1109.1979
Autor:
Novelli, Carla
Let $X$ be a smooth complex projective variety and let $L$ be a line bundle on it. We describe the structure of the pre-polarized manifold $(X,L)$ for non integral values of the invariant $\tau_L(R):=-K_X\cdot\Gamma/(L \cdot \Gamma)$, where $\Gamma$
Externí odkaz:
http://arxiv.org/abs/1108.5276
Let M be a smooth complex projective variety and let L be a line bundle on it. Rays-positive manifolds, namely pairs (M,L) such that L is numerically effective and L\cdotR > 0 for all extremal rays R on M, are studied. Several illustrative examples a
Externí odkaz:
http://arxiv.org/abs/1108.0897
Autor:
Novelli, Carla, Occhetta, Gianluca
We prove that Generalized Mukai Conjecture holds for Fano manifolds $X$ of pseudoindex $i_X \ge (\dim X +3)/3$. We also give different proofs of the conjecture for Fano fourfolds and fivefolds.
Comment: Modified the proof of the main theorem and
Comment: Modified the proof of the main theorem and
Externí odkaz:
http://arxiv.org/abs/0905.4388
Autor:
Novelli, Carla, Occhetta, Gianluca
Publikováno v:
Can. Math. Bull. 55 (2012) 799-814
Let $X$ be a smooth complex projective variety and let $H \in \pic(X)$ be an ample line bundle. Assume that $X$ is covered by rational curves with degree one with respect to $H$ and with anticanonical degree greater than or equal to $(\dim X -1)/2$.
Externí odkaz:
http://arxiv.org/abs/0805.2069