Found 68 Documents (Results 1–68)
Seshadri constants on some flag bundles. (English) Zbl 07905789
Reviewer: Piotr Pokora (Kraków)
Some results on Seshadri constants of vector bundles. (English) Zbl 1537.14010
Reviewer: Piotr Pokora (Kraków)
Nef cones of fiber products and an application to the cone conjecture. (English) Zbl 1536.14027
Reviewer: Martina Monti (Milano)
Seshadri constants of parabolic vector bundles. (English) Zbl 1533.14034
Reviewer: Joan Pons-Llopis (Maó)
Examples of non-effective rays at the boundary of the Mori cone of blow-ups of the plane. (English) Zbl 1515.14023
Divisors on surfaces isogenous to a product of mixed type with \(p_g= 0\). (English) Zbl 1499.14026
Reviewer: Giancarlo Urzúa (Santiago de Chile)
Positivity vs. slope semistability for bundles with vanishing discriminant. (English) Zbl 1505.14008
Reviewer: Yajnaseni Dutta (Bonn)
Nef cones of projective bundles over surfaces and Seshadri constants. (English) Zbl 1496.14008
Reviewer: Roberto Muñoz (Madrid)
Pseudo-effective cones of projective bundles and weak Zariski decomposition. (English) Zbl 1476.14077
Reviewer: Mihai Fulger (Storrs)
Nef cones of some Quot schemes on a smooth projective curve. (English) Zbl 1476.14011
Reviewer: Raquel Mallavibarrena (Madrid)
Nef cone of a generalized Kummer 4-fold. (English) Zbl 1473.14077
Reviewer: Shintaro Yanagida (Nagoya)
MSC:
14J35
Higher codimension cycles on the Hilbert scheme of three points on the projective plane. (English) Zbl 1466.14004
Reviewer: Zhenbo Qin (Columbia)
Seshadri constants and Grassmann bundles over curves. (Constantes de Seshadri et fibrés de Grassman sur les courbes.) (English. French summary) Zbl 1462.14036
Reviewer: Piotr Pokora (Kraków)
Fibration and classification of smooth projective toric varieties of low Picard number. (English) Zbl 1461.14069
Positivity of vector bundles on homogeneous varieties. (English) Zbl 1458.14011
Reviewer: Piotr Pokora (Kraków)
Embedding non-projective Mori dream space. (English) Zbl 1445.14026
Reviewer: Hamid Abban (Loughborough)
Examples of blown up varieties having projective bundle structures. (English) Zbl 1445.14003
Reviewer: Antonio Lanteri (Milano)
On nef subvarieties. (English) Zbl 1459.14003
Reviewer: Mihai Fulger (Storrs)
Nef and pseudoeffective cones of product of projective bundles over a curve. (English) Zbl 1419.14051
Reviewer: Nicolae Manolache (Bucureşti)
A note on the cone conjecture for \(K3\) surfaces in positive characteristic. (English) Zbl 1420.14086
Reviewer: Matthias Schütt (Hannover)
Fano varieties with \(\mathrm{Nef}(X)=\mathrm{Psef}(X)\) and \(\rho(X)=\dim X-1\). (English) Zbl 1405.14109
Reviewer: Ilya Karzhemanov (Moscow)
A special Cayley octad. (English) Zbl 1401.14174
Reviewer: Nikolaos Tziolas (Nicosia)
Nef cone volumes and discriminants of abelian surfaces. (English) Zbl 1388.14027
Reviewer: Piotr Pokora (Kraków)
A classification of Lagrangian planes in holomorphic symplectic varieties. (English) Zbl 1401.14178
Reviewer: Nikolaos Tziolas (Nicosia)
Positive cones of dual cycle classes. (English) Zbl 1376.14009
Reviewer: Andreas Höring (Nice)
On the birationality of complete intersections associated to nef-partitions. (English) Zbl 1360.14040
Reviewer: Vehbi Emrah Paksoy (Fort Lauderdale)
MSC:
14E05
Nef cones of Hilbert schemes of points on surfaces. (English) Zbl 1346.14011
Reviewer: Shintaro Yanagida (Nagoya)
A singular Demailly-Păun theorem. (Un théorème de Demailly-Păun singulier.) (English. French summary) Zbl 1344.32005
Reviewer: Eberhard Oeljeklaus (Bremen)
MSC:
32J25
A proof of the Kawamata-Morrison cone conjecture for holomorphic symplectic varieties of \(K3^{[n]}\) or generalized Kummer deformation type. (English) Zbl 1353.14049
Reviewer: Valentino Tosatti (Evanston)
Finiteness results for 3-folds with semiample anticanonical bundle. (English) Zbl 1332.14045
Reviewer: Andreas Höring (La Roquette-sur-Var)
On a conjecture of Oguiso about rational curves on Calabi-Yau threefolds. (English) Zbl 1304.14049
Reviewer: Weiyi Zhang (Coventry)
Higher-level \(\mathfrak{sl}_2\) conformal blocks divisors on \(\overline{M}_{0,n}\). (English) Zbl 1285.14012
Reviewer: Noah Giansiracusa (Zürich)
Segre classes on smooth projective toric varieties. (English) Zbl 1310.14015
Reviewer: Mateusz Michalek (Berkeley)
A nonboundary nef divisor on \(\overline{M}_{0,12}\). (English) Zbl 1276.14042
Reviewer: Dawei Chen (Chestnut Hill)
\(\mathrm{star}^{1}\)-convex functions on tropical linear spaces of complete graphs. (English. French summary) Zbl 1412.05033
Proceedings of the 24th international conference on formal power series and algebraic combinatorics, FPSAC 2012, Nagoya, Japan, July 30–August 3, 2012. Nancy: The Association. Discrete Mathematics & Theoretical Computer Science (DMTCS). Discrete Math. Theor. Comput. Sci., Proc., 709-720 (2012).
The cone conjecture for abelian varieties. (English) Zbl 1284.14021
Reviewer: Vladimir L. Popov (Moskva)
On the dual of the mobile cone. (English) Zbl 1252.14014
Reviewer: Vladimir Lazic (Bayreuth)
Lower and upper bounds for nef cones. (English) Zbl 1284.14020
Reviewer: Vladimir L. Popov (Moskva)
A cone theorem for nef curves. (English) Zbl 1253.14014
Reviewer: Gabriele Di Cerbo (Princeton)
Jumping of the nef cone for Fano varieties. (English) Zbl 1248.14020
Reviewer: Nikolaos Tziolas (Nicosia)
Fulton’s conjecture for \(\overline{M}_{0,7}\). (English) Zbl 1251.14015
Reviewer: Noah Giansiracusa (Zürich)
Generically nef vector bundles and geometric applications. (English) Zbl 1231.14009
Ebeling, Wolfgang (ed.) et al., Complex and differential geometry. Conference held at Leibniz Universität Hannover, Germany, September 14–18, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-20299-5/hbk; 978-3-642-20300-8/ebook). Springer Proceedings in Mathematics 8, 345-368 (2011).
Reviewer: Antonio Lanteri (Milano)
The cones of effective cycles on projective bundles over curves. (English) Zbl 1230.14047
Reviewer: Iustin Coandă (Bucureşti)
A Lefschetz hyperplane theorem for Mori dream spaces. (English) Zbl 1229.14013
Reviewer: Salvatore Cacciola (Rome)
Smooth projective toric varieties whose nontrivial nef line bundles are big. (English) Zbl 1189.14056
Reviewer: Christian Schnell (Chicago)
Primitive collections and toric varieties. (English) Zbl 1185.14045
Reviewer: Marina Marchisio (Torino)
MSC:
14M25
Remarks on the nef cone on symmetric products of curves. (English) Zbl 1172.14005
Reviewer: Roberto Munoz (Madrid)
The ample cone of the Kontsevich moduli space. (English) Zbl 1206.14050
Reviewer: Noah Giansiracusa (Providence)
A characterization of double covers of curves in terms of the ample cone of second symmetric product. (English) Zbl 1155.14027
Reviewer: Cicero Carvalho (Uberlandia)
Divisors on the space of maps to Grassmannians. (English) Zbl 1117.14028
Reviewer: Victor Przyjalkowski (Moskva)
Numerical characterization of the Kähler cone of a compact Kähler manifold. (English) Zbl 1064.32019
Reviewer: Vasile Oproiu (Iaşi)
Boundedness of canonical \(\mathbb{Q}\)-Fano 3-folds. (English) Zbl 0981.14016
Reviewer: L.Picco Botta (Torino)
Seshadri constants on algebraic surfaces. (English) Zbl 0955.14005
Reviewer: Vasile Brînzănescu (Bucureşti
Basepoint freeness for nef and big line bundles in positive characteristic. (English) Zbl 0954.14004
The role of \(c_2\) in Calabi-Yau classification. A preliminary survey. (English) Zbl 0936.14029
Greene, B. (ed.) et al., Mirror symmetry II. Cambridge, MA: International Press, AMS/IP Stud. Adv. Math. 1, 381-392 (1997).
The diagram method for 3-folds and its application to the Kähler cone and Picard number of Calabi-Yau 3-folds. I. – With an appendix by Vyacheslav V. Shokurov: Anticanonical boundedness for curves. (English) Zbl 0957.14030
Andreatta, Marco (ed.) et al., Higher dimensional complex varieties. Proceedings of the international conference, Trento, Italy, June 15-24, 1994. Berlin: Walter de Gruyter. 261-328; appendix 321-328 (1996).
Minimal models of algebraic threefolds: Mori’s program. (English) Zbl 0711.14008
Sémin. Bourbaki, Vol. 1988/89, 41e année, Exp. No. 712, Astérisque 177-178, 303-326 (1989).
Reviewer: B.Kreußler
On polarized manifolds whose adjoint bundles are not semipositive. (English) Zbl 0659.14002
Algebraic geometry, Proc. Symp., Sendai/Jap. 1985, Adv. Stud. Pure Math. 10, 167-178 (1987).
Reviewer: M.Miyanishi
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