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Let X be a normal complex projective variety with at worst klt singularities, and L a big line bundle on X. We use valuations to study the log canonical threshold of L, as well as another invariant, the stability threshold. The latter…

Algebraic Geometry · Mathematics 2020-02-11 Harold Blum , Mattias Jonsson

We construct projective asymptotically good moduli spaces parametrizing boundary polarized CY surface pairs, which are projective slc Calabi-Yau pairs $(X,D)$ such that $D$ is ample and $X$ has dimension two. The moduli space provides a…

Algebraic Geometry · Mathematics 2024-07-02 Harold Blum , Yuchen Liu

We define several notions of a limit point on sequences with domain a barrier in $[\omega]^{<\omega}$ focusing on the two dimensional case $[\omega]^2$. By exploring some natural candidates, we show that countable compactness has a number…

General Topology · Mathematics 2024-06-26 Cesar Corral , Pourya Memarpanahi , Paul Szeptycki

We discuss the concepts of fine and coarse moduli spaces in the context of finite dimensional algebras over algebraically closed fields. In particular, our formulation of a moduli problem and its potential strong or weak solution is adapted…

Representation Theory · Mathematics 2014-07-11 B. Huisgen-Zimmermann

We compute the arithmetic volumes of integral models of unitary Shimura curves. This establishes the base case of an inductive argument to compute the arithmetic volumes of unitary Shimura varieties of higher dimension, to appear in…

Number Theory · Mathematics 2022-06-23 Benjamin Howard

Massless modes of both heterotic and Type II string compactifications on compact manifolds are determined by vector bundle valued cohomology classes. Various applications of our recent algorithm for the computation of line bundle valued…

High Energy Physics - Theory · Physics 2012-01-27 Ralph Blumenhagen , Benjamin Jurke , Thorsten Rahn , Helmut Roschy

Starting from a Hamiltonian description of four dimensional general relativity in presence of a cosmological constant we perform the program of canonical quantisation. This is done using complex Ashtekar variables while keeping the…

General Relativity and Quantum Cosmology · Physics 2015-03-19 Wolfgang Wieland

Using $\delta$-invariants and Newton--Okounkov bodies, we derive the optimal volume upper bound for K\"ahler manifolds with positive Ricci curvature, from which we get a new characterization of the complex projective space.

Differential Geometry · Mathematics 2020-09-30 Kewei Zhang

We show boundedness of polarized Calabi--Yau fibrations over curves only with fixed volumes of general fibers and Iitaka volumes. As its application, we construct a separated coarse moduli space of K-stable Calabi-Yau fibrations over curves…

Algebraic Geometry · Mathematics 2025-06-11 Kenta Hashizume , Masafumi Hattori

We obtain sufficient conditions exlcuding the existence of non-trivial distribution sections of bundles over the boundary of symmetric spaces of negative curvature which are invariant with respect to a geometrically finite group of…

Differential Geometry · Mathematics 2007-05-23 Ulrich Bunke , Martin Olbrich

We present closed form expressions for the ranks of all cohomology groups of holomorphic line bundles on several Calabi-Yau threefolds realised as complete intersections in products of projective spaces. The formulae have been obtained by…

High Energy Physics - Theory · Physics 2020-02-19 Andrei Constantin , Andre Lukas

We determine the maximal dimension of compact subvarieties of $\mathcal{A}_g$, the moduli space of complex principally polarized abelian varieties of dimension $g$, and the maximal dimension of a compact subvariety through a very general…

Algebraic Geometry · Mathematics 2025-11-24 Samuel Grushevsky , Gabriele Mondello , Riccardo Salvati Manni , Jacob Tsimerman

In the conformal class of Euclidean space, we give some volume comparison theorems with help of Q-curvature. Meanwhile, for compact four dimensional manifolds with non-negative scalar curvature, we give a volume rigidity theorem with…

Differential Geometry · Mathematics 2024-04-19 Mingxiang Li , Juncheng Wei

Formal definitions of quantities, quantity spaces, dimensions and dimension groups are introduced. Based on these concepts, a theoretical framework and a practical algorithm for dimensional analysis are developed, and examples of…

History and Overview · Mathematics 2015-04-20 Dan Jonsson

Analytic relations are derived for finite volume integrals over the radial distribution function of a fluid, so-called Kirkwood-Buff integrals. Closed form expressions are obtained for cubes and cuboids, the system shapes commonly employed…

Soft Condensed Matter · Physics 2018-05-23 Peter Krüger , Thijs J. H. Vlugt

We study the normal bundles of the exceptional sets of isolated simple small singularities in the higher dimension when the Picard group of the exceptional set is $\mathbb{Z}$ and the normal bundle of it has some good filtration. In…

Algebraic Geometry · Mathematics 2018-12-31 Rong Du , Xinyi Fang

We study the Kodaira dimension of almost complex manifolds admitting an $\mathrm{SU} (m)$-structure. We introduce the notion of almost complex structure of splitting type and of associated $\mathrm{SU} (m)$-structure. When the latter is…

Differential Geometry · Mathematics 2025-11-12 Lorenzo Sillari , Adriano Tomassini

In this paper, the analytical volume computations of the zonotopes generated by the matrix pair with $n$ different or repeated real eigenvalues are discussed firstly, and then by deconstructing the volume computing equations, 3 classes of…

Systems and Control · Electrical Eng. & Systems 2020-04-20 Mingwang Zhao

We prove that the CM line bundle is ample on the proper moduli space which parametrizes KSBA stable varieties.

Algebraic Geometry · Mathematics 2016-02-08 Zsolt Patakfalvi , Chenyang Xu

Let $S$ be a regular surface endowed with a very ample line bundle $\mathcal O_S(h_S)$. Taking inspiration from a very recent result by D. Faenzi on $K3$ surfaces, we prove that if $\mathcal O_S(h_S)$ satisfies a short list of technical…

Algebraic Geometry · Mathematics 2020-11-24 Gianfranco Casnati