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We give an unconditional proof of the Coba conjecture for wonderful compactifications of adjoint type for semisimple Lie groups of type $A_n$. We also give a proof of a slightly weaker conjecture for wonderful compactifications of adjoint…

Algebraic Geometry · Mathematics 2025-04-08 Christopher Manon , David McKinnon , Matthew Satriano

We propose a log-concavity conjecture for BPS invariants arising in the enumerative geometry of planar curve singularities, identified with the local Euler obstructions of Severi strata in their versal deformations. We further extend this…

Algebraic Geometry · Mathematics 2026-05-01 Tao Su , Baiting Xie , Chenglong Yu

We present here some conjectures on the diagonalizability of uniform principal bundles on rational homogeneous spaces, that are natural extensions of classical theorems on uniform vector bundles on the projective space, and study the…

Algebraic Geometry · Mathematics 2025-04-01 Roberto Muñoz , Gianluca Occhetta , Luis E. Solá Conde

We discuss the cone and contraction theorem in a suitable complex analytic setting. More precisely, we establish the cone and contraction theorem of normal pairs for projective morphisms between complex analytic spaces. This result is a…

Algebraic Geometry · Mathematics 2023-08-15 Osamu Fujino

Assuming a modular version of Schanuel's conjecture and the modular Zilber-Pink conjecture, we show that the existence of generic solutions of certain families of equations involving the modular $j$ function can be reduced to the problem of…

Number Theory · Mathematics 2025-02-03 Sebastian Eterović

We verify a special case of V. V. Shokurov's conjecture about characterization of toric varieties. More precisely, let $(X,D=\sum d_iD_i)$ be a three-dimensional log variety such that $K_X+D$ is numerically trivial and $(X,D)$ has only…

Algebraic Geometry · Mathematics 2010-05-06 Yuri G. Prokhorov

We establish the Hodge conjecture for some subvarieties of a class of toric varieties. First we study quasi-smooth intersections in a projective simplicial toric variety, which is a suitable notion to generalize smooth complete intersection…

Algebraic Geometry · Mathematics 2021-11-23 Ugo Bruzzo , William D. Montoya

In this paper, we prove the Geometric Arveson-Douglas Conjecture for a special case which allow some singularity on $\partial{\mathbb{B}_n}$. More precisely, we show that if a variety can be decomposed into two varieties, each having nice…

Functional Analysis · Mathematics 2017-04-14 Ronald G. Douglas , Yi Wang

We ask questions generalizing uniform versions of conjectures of Mordell and Lang and combining them with the Morton--Silverman conjecture on preperiodic points. We prove a few results relating different versions of such questions.

Number Theory · Mathematics 2012-07-04 Bjorn Poonen

It was conjectured that multiplicity of a singularity is bi-Lipschitz invariant. We disprove this conjecture, constructing examples of bi-Lipschitz equivalent complex algebraic singularities with different values of multiplicity.

Algebraic Geometry · Mathematics 2021-09-20 Lev Birbrair , Alexandre Fernandes , J. Edson Sampaio , Misha Verbitsky

The present paper is concerned with differential forms on log canonical varieties. It is shown that any p-form defined on the smooth locus of a variety with canonical or klt singularities extends regularly to any resolution of…

Algebraic Geometry · Mathematics 2015-03-13 Daniel Greb , Stefan Kebekus , Sandor J. Kovacs , Thomas Peternell

We show that Lusztig's conjecture on the irreducible characters of a reductive algebraic group over a field of positive characteristic is equivalent to the generic multiplicity conjecture, which gives a formula for the Jordan-H"older…

Representation Theory · Mathematics 2011-01-13 Peter Fiebig

We discuss some variants of cone theorem for movable curves in any codimensions.

Algebraic Geometry · Mathematics 2020-02-26 Sung Rak Choi , Yoshinori Gongyo

In this paper we introduce generalised Markov numbers and extend the classical Markov theory for the discrete Markov spectrum to the case of generalised Markov numbers. In particular we show recursive properties for these numbers and find…

Number Theory · Mathematics 2018-09-07 Oleg Karpenkov , Matty van-Son

We develop a general theory of log spaces, in which one can make sense of the basic notions of logarithmic geometry, in the sense of Fontaine-Illusie-Kato. Many of our general constructions with log spaces are new, even in the algebraic…

Differential Geometry · Mathematics 2015-07-27 W. D. Gillam , Samouil Molcho

We prove that the complement of a very general pair of hypersurfaces of total degree $2n$ in $\mathbb{P}^n$ is algebraically hyperbolic modulo a proper closed subvariety. This provides evidence towards conjectures of Lang-Vojta and…

Algebraic Geometry · Mathematics 2024-10-02 Kenneth Ascher , Amos Turchet , Wern Yeong

Consider a smooth, geometrically irreducible, projective curve of genus $g \ge 2$ defined over a number field of degree $d \ge 1$. It has at most finitely many rational points by the Mordell Conjecture, a theorem of Faltings. We show that…

Number Theory · Mathematics 2021-04-02 Vesselin Dimitrov , Ziyang Gao , Philipp Habegger

For a nondegenerate projective variety $X$, the Eisenbud-Goto conjecture asserts that $\operatorname{reg}X\leq\operatorname{deg}X-\operatorname{codim}X+1$. Despite the existence of counterexamples, identifying the classes of varieties for…

Algebraic Geometry · Mathematics 2026-02-10 Jong In Han

We give a conditional proof of the Uniform Boundedness Conjecture of Morton and Silverman in the case of polynomials over number fields, assuming a standard conjecture in arithmetic geometry. Our technique simultaneously yields a dynamical…

Number Theory · Mathematics 2025-12-23 Nicole R. Looper

We show that Lang's hyperbolic and function version conjectures hold for surfaces $S$ of general type having a fibration of general type onto a curve $C$. The notion of multiplicity used is natural, but not classical, which leds to orbifold…

Algebraic Geometry · Mathematics 2007-05-23 Frédéric Campana
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