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In this paper we prove the Zariski-Lipman conjecture for log canonical spaces.

代数几何 · 数学 2017-05-17 Stéphane Druel

We establish the minimal model theory for normal pairs along log canonical locus in the complex analytic setting. This is the complex analytic analog of the previous result by the author.

代数几何 · 数学 2025-08-19 Kenta Hashizume

We prove that the non-vanishing conjecture holds for generalized lc pairs with a polarization.

代数几何 · 数学 2021-01-01 Kenta Hashizume

We prove that a Kawamata log terminal pair has the canonical model.

代数几何 · 数学 2020-04-09 Zhengyu Hu

We establish a relative spannedness for log canonical pairs, which is a generalization of the basepoint-freeness for varieties with log-terminal singularities by Andreatta--Wi\'sniewski. Moreover, we establish a generalization for quasi-log…

代数几何 · 数学 2020-12-01 Osamu Fujino

Let $(X,D)$ be log canonical pair such $\dim X = 3$ and the divisor $-(K_X + D)$ is nef and big. For a special class of such $(X,D)$'s we prove that the linear system $|-n(K_{X}+D)|$ is free for $n \gg 0$.

代数几何 · 数学 2010-02-01 Ilya Karzhemanov

We prove an effective vanishing theorem for direct images of log pluricanonical bundles of projective semi-log canonical pairs. As an application, we obtain a semipositivity theorem for direct images of relative log pluricanonical bundles…

代数几何 · 数学 2018-02-16 Osamu Fujino

We prove the finiteness of $B$-representations of generalised log canonical pairs. As a consequence, we prove that, the (relative) abundance for a generalised semi-log canonical pair is implied by the abundance for its normalisation.…

代数几何 · 数学 2021-03-23 Zhengyu Hu

For a fixed pair and fixed exponents, we prove the discreteness of log discrepancies over all log canonical triples formed by attaching a product of ideals with given exponents.

代数几何 · 数学 2012-04-25 Masayuki Kawakita

The authors and D. Martinelli proved the base point free theorem for big line bundles on a three-dimensional log canonical projective pair defined over the algebraic closure of a finite field. In this paper, we drop the bigness condition…

代数几何 · 数学 2024-04-30 Yusuke Nakamura , Jakub Witaszek

We prove that one can run the log minimal model program for log canonical $3$-fold pairs in characteristic $p>5$. In particular we prove the Cone Theorem, Contraction Theorem, the existence of flips and the existence of log minimal models…

代数几何 · 数学 2017-01-11 Joe Waldron

In this article we present a refinement of the base point free theorem for threefolds in positive characteristic. If $L$ is a nef Cartier divisor of numerical dimension at least one on a projective Kawamata log terminal threefold…

代数几何 · 数学 2020-03-17 Fabio Bernasconi

We develop a general theory of canonical bases for quantum symmetric pairs $(\mathbf{U}, \mathbf{U}^\imath)$ with parameters of arbitrary finite type. We construct new canonical bases for the simple integrable $\mathbf{U}$-modules and their…

量子代数 · 数学 2018-08-14 Huanchen Bao , Weiqiang Wang

The LCS locus is an essential ingredient in the proof of fundamental results of Log Minimal Model Program, such as nonvanishing and base point freeness theorems. We prove in this paper that the LCS locus of a log canonical variety has…

代数几何 · 数学 2007-05-23 Florin Ambro

In this paper, we study transcendental aspects of the cohomology groups of adjoint bundles of log canonical pairs, aiming to establish an analytic theory for log canonical singularities. As a result, in the case of purely log terminal…

复变函数 · 数学 2020-05-12 Shin-ichi Matsumura

Working in point-free topology under the constraints of geometric logic, we prove the Fundamental Theorem of Calculus, and apply it to prove the usual rules for the derivatives of $x^\alpha$, $\gamma^x$, and $\log_\gamma x$.

范畴论 · 数学 2023-12-11 Steven Vickers

We prove an interpolation theorem for bounded free holomorphic functions.

算子代数 · 数学 2013-08-20 Jim Agler , John E. McCarthy

We prove Fujita-type basepoint-freeness for projective quasi-log canonical curves and surfaces.

代数几何 · 数学 2020-12-23 Osamu Fujino , Haidong Liu

We develop techniques of mimicking the Frobenius action in the study of universal homeomorphisms in mixed characteristic. As a consequence, we show a mixed characteristic Keel's base point free theorem obtaining applications towards the…

代数几何 · 数学 2022-01-25 Jakub Witaszek

Building on results of Koll\'ar, we prove Shokurov's ACC Conjecture for log canonical thresholds on smooth varieties, and more generally, on varieties with quotient singularities.

代数几何 · 数学 2009-01-09 Lawrence Ein , Mircea Mustata