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We obtain a correct generalization of Shokurov's non-vanishing theorem for log canonical pairs. It implies the base point free theorem for log canonical pairs. We also prove the rationality theorem for log canonical pairs. As a corollary,…

Algebraic Geometry · Mathematics 2009-12-01 Osamu Fujino

We introduce the notion of basic slc-trivial fibrations. It is a generalization of that of Ambro's lc-trivial fibrations. Then we study fundamental properties of basic slc-trivial fibrations by using the theory of variations of mixed Hodge…

Algebraic Geometry · Mathematics 2020-03-16 Osamu Fujino

Given a proper, smooth (formal) scheme over the ring of integers of $\mathbb C_p$, we prove that if the crystalline cohomology of its special fibre is torsion-free then the $p$-adic \'etale cohomology of its generic fibre is also…

Algebraic Geometry · Mathematics 2015-07-30 Bhargav Bhatt , Matthew Morrow , Peter Scholze

Given a projective morphism of compact, complex, algebraic varieties and a relatively ample line bundle on the domain we prove that a suitable choice, dictated by the line bundle, of the decomposition isomorphism of the Decomposition…

Algebraic Geometry · Mathematics 2007-10-16 Mark Andrea de Cataldo , Luca Migliorini

The Ricci curvature equations are a central subject of study in geometry. However, in the smooth real case, their linear analysis is often confined to settings in which the background metric is Einstein. In this paper, we establish…

Differential Geometry · Mathematics 2026-05-12 Roee Leder

We prove a general structure theorem for finitely presented torsion modules over a class of commutative rings that need not be Noetherian. As a first application, we then use this result to study the Weil- \'etale cohomology groups of…

Number Theory · Mathematics 2024-01-08 David Burns , Alexandre Daoud , Dingli Liang

We develop the theory of Hodge ideals for Q-divisors by means of log resolutions, extending our previous work on reduced hypersurfaces. We prove local (non-)triviality criteria and a global vanishing theorem, as well as other analogues of…

Algebraic Geometry · Mathematics 2018-11-08 Mircea Mustata , Mihnea Popa

In this paper, we clarify the mistakes made in the former article entitled "Vanishing Theorems on Toric Varieties in Positive Characteristic". On the other hand, we use the positive characteristic method to reprove the Bott vanishing…

Algebraic Geometry · Mathematics 2014-12-25 Qihong Xie

We prove a vanishing theorem for the cohomology of the complement of a complex hyperplane arrangement with coefficients in a complex local system. This result is compared with other vanishing theorems, and used to study Milnor fibers of…

Algebraic Geometry · Mathematics 2007-05-23 D. Cohen , A. Dimca , P. Orlik

We present a new technique that employs partial differential equations in order to explicitly construct primitives in the continuous bounded cohomology of Lie groups. As an application, we prove a vanishing theorem for the continuous…

Group Theory · Mathematics 2016-01-20 Tobias Hartnick , Andreas Ott

We prove that the complement of a toric arrangement has the homotopy type of a minimal CW complex. As a corollary we obtain that the integer cohomology of these spaces is torsion free. We use Discrete Morse Theory, providing a sequence of…

Combinatorics · Mathematics 2013-03-27 Giacomo d'Antonio , Emanuele Delucchi

We prove rigidity type results on the vanishing of stable (co)homology for modules of finite complete intersection dimension, results which generalize and improve upon known results. We also introduce a notion of pre-rigidity, which…

Commutative Algebra · Mathematics 2009-04-21 Petter Andreas Bergh , David A. Jorgensen

We introduce the notion of Hermitian Higgs bundle as a natural generalization of the notion of Hermitian vector bundle and we study some vanishing theorems concerning Hermitian Higgs bundles when the base manifold is a compact complex…

Mathematical Physics · Physics 2014-07-17 S. A. H. Cardona

This paper reproves a general form of the Green-Lazarsfeld 'generic vanishing' theorem and more recent strengthenings, as well as giving some new applications.

Algebraic Geometry · Mathematics 2007-05-23 Herbert Clemens , Christopher Hacon

In this paper, we study the cohomology of semisimple local systems in the spirit of classical Hodge theory. On the one hand, we establish a generalization of Hodge-Riemann bilinear relations. For a semisimple local system on a smooth…

Algebraic Geometry · Mathematics 2024-12-13 Chuanhao Wei , Ruijie Yang

In this paper we study the question asked by Caucher Birkar about injectivity theorem on cohomologies of generalised pairs. By applying techniques from complex analytic geometry, we show that the injectivity theorem holds for generalised…

Algebraic Geometry · Mathematics 2024-11-19 Santai Qu

These are the lecture notes based on earlier papers with some additional new results. New and simple proofs are given for local freeness theorem and the semipositivity theorem. A decomposition theorem for higher direct images of dualizing…

Algebraic Geometry · Mathematics 2013-10-15 Yujiro Kawamata

We use a Koszul-type resolution to prove a weak version of Bott's vanishing theorem for smooth hypersurfaces in $\mathbb{P}^n$ and use this result to prove a vanishing theorem for Hodge ideals associated with an effective Cartier divisor on…

Algebraic Geometry · Mathematics 2024-10-21 Anh Duc Vo

In this paper we prove some vanishing theorems for the twisted Dolbeault cohomology of the complete flag varieties associated to a simple, simply connected algebraic group.

Algebraic Geometry · Mathematics 2007-05-23 K Paramasamy

In this paper we will first show some Kollar-Enoki type injectivity theorems on compact Kahler manifolds, by using the Hodge theory, the Bochner- Kodaira-Nakano identity and the analytic method provided by O. Fujino and S. Matsumura in [15,…

Algebraic Geometry · Mathematics 2020-07-27 Chunle Huang