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We study natural D-modules on the moduli stack of elliptic curves over a field of characteristic zero. We use this to produce an algebro-geometric version of the algebra of higher depth mock modular forms, studied from a Conformal Field…

Algebraic Geometry · Mathematics 2020-01-16 E. Bouaziz

We develop the basic properties of the higher commutator for congruence modular varieties.

Logic · Mathematics 2017-03-07 Andrew Moorhead

An algebraic classification is given for spaces of holomorphic vector-valued modular forms of arbitrary real weight and multiplier system, associated to irreducible, T-unitarizable representations of the full modular group, of dimension…

Number Theory · Mathematics 2012-01-27 Christopher Marks

We introduce a double framing construction for moduli spaces of quiver representations. It allows us to reduce certain sheaf cohomology computations involving the universal representation, to computations involving line bundles, making them…

Algebraic Geometry · Mathematics 2025-04-02 Pieter Belmans , Ana-Maria Brecan , Hans Franzen , Markus Reineke

Using a description of the cohomology of local systems on the moduli space of abelian surfaces with a full level two structure, together with a computation of Euler characteristics we find the isotypical decomposition, under the symmetric…

Number Theory · Mathematics 2025-03-05 Jonas Bergström , Fabien Cléry

We construct isomorphisms between spaces of vector-valued modular forms for the dual Weil representation and certain spaces of scalar-valued modular forms in the case that the underlying finite quadratic module $A$ has order $p$ or $2p$,…

Number Theory · Mathematics 2020-06-19 Markus Schwagenscheidt , Brandon Williams

We change the definition of the vertex representations. As a result the vertex representations has one parameter.

q-alg · Mathematics 2008-02-03 Yoshihisa Saito

For an isotropic subgroup $H$ of a discriminant form $D$ there exists a lift from modular forms for the Weil representation of the discriminant form $H^\bot/H$ to modular forms for the Weil representation of $D$. We determine a set of…

Number Theory · Mathematics 2024-07-02 Manuel K. -H. Müller

This paper describes the vector bundle on the elliptic modular curve that is associated to a vertex operator algebra $V$ (VOA) or more generally a quasi-vertex operator algebra (QVOA), with a view towards future applications aimed at…

Number Theory · Mathematics 2026-01-16 Daniel Barake , Owen Chuchman , Cameron Franc , Geoffrey Mason , Brett Nasserden

We study a family of Siegel modular forms that are constructed using Jacobi forms that arise in Umbral moonshine. All but one of them arise as the Weyl-Kac-Borcherds denominator formula of some Borcherds-Kac-Moody (BKM) Lie superalgebras.…

High Energy Physics - Theory · Physics 2021-11-24 Suresh Govindarajan , Mohammad Shabbir , Sankaran Viswanath

Geometric structures on $\mathbb N Q$-manifolds, i.e.~non-negatively graded manifolds with an homological vector field, encode non-graded geometric data on Lie algebroids and their higher analogues. A particularly relevant class of…

Differential Geometry · Mathematics 2016-06-24 Luca Vitagliano

In the spirit of the geometric approach to two-dimensional conformal field theory, we explicitly associate to every holomorphic vertex operator algebra a section of a power of Hodge line bundle on the moduli space of curves of arbitrary…

Quantum Algebra · Mathematics 2026-05-27 Sebastiano Carpi , Giulio Codogni

A higher dimensional analogue of the notion of vertex algebra is formulated in terms of formal variable language with Borcherds' notion of $G$-vertex algebra as a motivation. Some examples are given and certain analogous duality properties…

Quantum Algebra · Mathematics 2007-05-23 Haisheng Li

We study irreducible representations for the Lie algebra of vector fields on a 2-dimensional torus constructed using the generalized Verma modules. We show that for a certain choice of parameters these representations remain irreducible…

Representation Theory · Mathematics 2007-07-05 Yuly Billig , Alexander Molev , Ruibin Zhang

A higher level analog of Weyl modules over multi-variable currents is proposed. It is shown that the sum of their dual spaces form a commutative algebra. The structure of these modules and the geometry of the projective spectrum of this…

Quantum Algebra · Mathematics 2010-12-15 B. Feigin , A. N. Kirillov , S. Loktev

We discuss methods, based on the theory of vector-valued modular forms, to determine all modular differential equations satisfied by the conformal characters of RCFT; these modular equations are related to the null vector relations of the…

High Energy Physics - Theory · Physics 2014-11-20 Peter Bantay

We develop a theory of vector valued automorphic forms associated to the Weil representation $\omega_f$ and corresponding to vector valued modular forms transforming with the ``finite'' Weil representation $\rho_L$. For each prime $p$ we…

Number Theory · Mathematics 2024-11-06 Oliver Stein

We summarize interactions between vertex operator algebras and number theory through the lens of Zhu theory. The paper begins by recalling basic facts on vertex operator algebras (VOAs) and modular forms, and then explains Zhu's theorem on…

Quantum Algebra · Mathematics 2022-11-01 Cameron Franc , Geoffrey Mason

We describe a new link between the theory of topological modular forms and representations of vertex operator algebras obtained by certain lattices. The construction is motivated by the arithmetic Whitehead tower of the orthogonal groups.…

Algebraic Topology · Mathematics 2021-10-18 Nora Ganter , Gerd Laures

It is shown that certain transformations on quiver-dimension vector pairs induce isomorphisms on the corresponding moduli spaces of quiver representations and map a stable dimension vector to a stable dimension vector. This result combined…

Representation Theory · Mathematics 2023-12-27 M. Domokos