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We reduce Iitaka's subadditivity conjecture for the logarithmic Kodaira dimension to a special case of the generalized abundance conjecture by establishing an Iitaka type inequality for Nakayama's numerical Kodaira dimension. Our proof…

Algebraic Geometry · Mathematics 2016-02-09 Osamu Fujino

We study realizations of polynomial deformations of the sl(2,R)- Lie algebra in terms of differential operators strongly related to bosonic operators. We also distinguish their finite- and infinite-dimensional representations. The linear,…

High Energy Physics - Theory · Physics 2009-10-31 J. Beckers , Y. Brihaye , N. Debergh

In this paper consisting of two parts, we study the integral of a logarithmic differential form on a compact semi-algebraic set in R^n or C^n. In Part I, we prove the convergence of the integral when the semi-algebraic set satisfies…

Algebraic Geometry · Mathematics 2015-09-24 Masaki Hanamura , Kenichiro Kimura , Tomohide Terasoma

We give a generalization of the nonexistence of level structures as Nadel, Noguchi, Hwang-To, for quasi-projective manifolds uniformized by strongly Carath\'eodory hyperbolic complex manifolds. Examples include moduli space of compact…

Algebraic Geometry · Mathematics 2025-01-17 Kwok-Kin Wong , Sai-Kee Yeung

Local normal form theorems for smooth equivariant maps between infinite-dimensional manifolds are established. These normal form results are new even in finite dimensions. The proof is inspired by the Lyapunov-Schmidt reduction for…

Differential Geometry · Mathematics 2021-10-15 Tobias Diez , Gerd Rudolph

We generalize a fundamental theorem in higher dimensional value distribution theory about entire curves in subvarieties $X$ of semi-abelian varieties to the situation of the sequences of holomorphic maps from the unit disc into $X$. This…

Complex Variables · Mathematics 2023-04-13 Katsutoshi Yamanoi

Let $K/F$ be a quadratic extension of $p$-adic fields, $\sigma$ the nontrivial element of the Galois group of $K$ over $F$, and $\pi$ a quasi-square-integrable representation of $GL(n,K)$. Denoting by $\pi^{\vee}$ the smooth contragredient…

Representation Theory · Mathematics 2009-10-21 Nadir Matringe

A new class of compact K\"ahler manifolds, called special, is defined, which are the ones having no surjective meromorphic map to an orbifold of general type. The special manifolds are in many respect higher-dimensional generalisations of…

Algebraic Geometry · Mathematics 2007-05-23 Frederic Campana

Using constructions of Voisin, we exhibit a smooth projective variety defined over a number field k and two complex embeddings of k, such that the two complex manifolds induced by these embeddings have non isomorphic cohomology algebras…

Algebraic Geometry · Mathematics 2008-07-15 François Charles

A quantum sl(2,R) coalgebra is shown to underly the construction of a large class of superintegrable potentials on 3D curved spaces, that include the non-constant curvature analogues of the spherical, hyperbolic and (anti-)de Sitter spaces.…

Mathematical Physics · Physics 2014-11-18 Angel Ballesteros , Alberto Enciso , Francisco J. Herranz , Orlando Ragnisco

For a strongly pseudo-convex complex Finsler manifold M, a bundle U of adapted unitary frames is canonically defined. A non-linear Hermitian connection on U, invariant under local biholomorphic isometries, is given and it proved to be…

Differential Geometry · Mathematics 2007-05-23 Andrea Spiro

We show how there is associated to each non-constant polynomial $F(x,y)$ a completely integrable system with polynomial invariants on $\Rd$ and on $\C{2d}$ for each $d\geq1$; in fact the invariants are not only in involution for one Poisson…

solv-int · Physics 2008-02-03 Pol Vanhaecke

We prove that logarithmically divergent one-loop lattice Feynman integrals have the general form I(p,a) = f(p)log(aM)+g(p,M) up to terms which vanish for lattice spacing a -> 0. Here p denotes collectively the external momenta and M is an…

High Energy Physics - Lattice · Physics 2009-04-14 Jongjeong Kim , David H. Adams , Weonjong Lee

We study the equivariant cohomology classes of torus-equivariant subvarieties of the space of matrices. For a large class of torus actions, we prove that the polynomials representing these classes (up to suitably changing signs) are…

Algebraic Geometry · Mathematics 2024-12-06 Yairon Cid-Ruiz , Yupeng Li , Jacob P. Matherne

We introduce and motivate a notion of pseudo-arithmeticity, which possibly applies to all lattices in $\mathrm{PO}(n,1)$ with $n>3$. We further show that under an additional assumption (satisfied in all known cases), the covolumes of these…

Geometric Topology · Mathematics 2018-10-31 Vincent Emery , Olivier Mila

The groups mentioned in the title are certain matrix groups of infinite size over a finite field $\mathbb F_q$. They are built from finite classical groups and at the same time they are similar to reductive $p$-adic Lie groups. In the…

Representation Theory · Mathematics 2022-06-15 Cesar Cuenca , Grigori Olshanski

We realise non-unitary fusion categories using subfactor-like methods, and compute their quantum doubles and modular data. For concreteness we focus on generalising the Haagerup-Izumi family of Q-systems. For example, we construct…

Quantum Algebra · Mathematics 2015-06-12 David E. Evans , Terry Gannon

We study the logarithmic and ratio asymptotic of linear forms constructed from a Nikishin system which satisfy orthogonality conditions with respect to a system of measures generated from another Nikishin system. This construction combines…

Complex Variables · Mathematics 2019-10-22 U. Fidalgo Prieto , A. López García , G. López Lagomasino , V. N. Sorokin

Recently, the authors of this paper introduced logarithmic Hochschild (co)homology of logarithmic spaces in a geometric way using formality of derived intersections. In this paper, the authors extend the decomposition theorem for the…

Algebraic Geometry · Mathematics 2026-04-15 Marton Hablicsek , Leo Herr , Francesca Leonardi

We study the convergence of volume forms on a degenerating holomorphic family of log-Calabi-Yau varieties to a non-Archimedean measure, extending a result of Boucksom and Jonsson. More precisely, let $(X,B)$ be a holomorphic family of sub…

Differential Geometry · Mathematics 2019-11-19 Sanal Shivaprasad