Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Toma, Matei"'
Autor:
Toma, Matei
Publikováno v:
Cent. Eur. J. Math. 10 (2012), 1356-1360
We show that certain moduli spaces of vector bundles over blown-up primary Hopf surfaces admit no compact components. These are the moduli spaces used by Andrei Teleman in his work on the classification of class $VII$ surfaces.
Comment: The pape
Comment: The pape
Externí odkaz:
http://arxiv.org/abs/2408.17330
Autor:
Moosa, Rahim, Toma, Matei
Publikováno v:
Bull. Math. Soc. Sci. Math. Roumanie 58 (2015), 311-316
It is shown that the space of finite-to-finite holomorphic correspondences on an OT-manifold is discrete. When the OT-manifold has no proper infinite complex-analytic subsets, it then follows by known model-theoretic results that its cartesian powers
Externí odkaz:
http://arxiv.org/abs/2408.08049
Autor:
Pavel, Mihai, Toma, Matei
We survey old and new results on the existence of moduli spaces of semistable coherent sheaves both in algebraic and in complex geometry.
Externí odkaz:
http://arxiv.org/abs/2407.13485
Autor:
Pavel, Mihai, Toma, Matei
We study the moduli stacks of slope-semistable torsion-free coherent sheaves that admit reflexive, respectively locally free, Seshadri graduations on a smooth projective variety. We show that they are open in the stack of coherent sheaves and that th
Externí odkaz:
http://arxiv.org/abs/2407.06819
We prove uniform boundedness statements for semistable pure sheaves on projective manifolds. For example, we prove that the set of isomorphism classes of pure sheaves of dimension 2 that are slope semistable with respect to ample classes that vary in
Externí odkaz:
http://arxiv.org/abs/2403.12855
We study a class of semistability conditions defined by a system of ample classes for coherent sheaves over a smooth projective variety. Under some necessary boundedness assumptions, we show the existence of a well-behaved chamber structure for the v
Externí odkaz:
http://arxiv.org/abs/2402.07758
Autor:
Chiose, Ionut, Toma, Matei
We present some properties of positive closed currents of type $(1,1)$ on compact non-k\"ahlerian surfaces related to our previous study of these objects started in \cite{ChiTo2}.
Externí odkaz:
http://arxiv.org/abs/2210.07629
Autor:
Ross, Julius, Toma, Matei
We prove a version of the Hodge-Riemann bilinear relations for Schur polynomials of K\"ahler forms and for Schur polynomials of positive forms on a complex vector space.
Comment: 25 pages. v2 minor typos fixed
Comment: 25 pages. v2 minor typos fixed
Externí odkaz:
http://arxiv.org/abs/2202.13816
Autor:
Ross, Julius, Toma, Matei
We prove that Schur classes of nef vector bundles are limits of classes that have a property analogous to the Hodge-Riemann bilinear relations. We give a number of applications, including (1) new log-concavity statements about characteristic classes
Externí odkaz:
http://arxiv.org/abs/2106.11285
Autor:
Chiose, Ionuţ, Toma, Matei
We propose a classification of non-k\"ahlerian surfaces from a dynamical point of view and show how the known non-k\"ahlerian surfaces fit into it.
Externí odkaz:
http://arxiv.org/abs/2006.09967