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In this paper, we construct a class of non-weight modules over the affine-Virasoro algebra of type $A_1$ by taking tensor products of irreducibles defined in [Q. Chen, J. Han, Non-weight modules over the affine-Virasoro algebra of type…

Representation Theory · Mathematics 2021-02-02 Qiu-Fan Chen , Yu-Feng Yao

Let $X$ be a rationally connected three-dimensional algebraic variety and let $\tau$ be an element of order two in the group of its birational selfmaps. Suppose that there exists a non-uniruled divisorial component of the $\tau$-fixed point…

Algebraic Geometry · Mathematics 2016-01-29 Yuri Prokhorov

We study local, global and local-to-global properties of threefolds with certain singularities. We prove criteria for these threefolds to be rational homology manifolds and conditions for threefolds to satisfy rational Poincar\'e duality.…

Algebraic Geometry · Mathematics 2018-04-10 Antonella Grassi , Timo Weigand , with an Appendix by V. Srinivas

We study a new type of higher categorical structure, called weakly globular n-fold category, previously introduced by the author. We show that this structure is a model of weak n-categories by proving that it is suitably equivalent to the…

Category Theory · Mathematics 2016-09-15 Simona Paoli

In this article we develop a new way of systematically constructing infinitely many families of smooth subvarieties $X$ of any given dimension $m$, $m \geq 3$, and any given codimension in $\mathbb P^N$, embedded by complete subcanonical…

Algebraic Geometry · Mathematics 2022-12-20 Purnaprajna Bangere , Francisco Javier Gallego , Jayan Mukherjee , Debaditya Raychaudhury

We constrain the spectrum of $\mathcal{N}=(1, 1)$ and $\mathcal{N}=(2, 2)$ superconformal field theories in two-dimensions by requiring the NS-NS sector partition function to be invariant under the $\Gamma_\theta$ congruence subgroup of the…

High Energy Physics - Theory · Physics 2019-02-20 Jin-Beom Bae , Sungjay Lee , Jaewon Song

We prove new modularity lifting theorems for p-adic Galois representations in situations where the methods of Wiles and Taylor--Wiles do not apply. Previous generalizations of these methods have been restricted to situations where the…

Number Theory · Mathematics 2017-07-18 Frank Calegari , David Geraghty

We find all possible isomorphisms and 3-birational maps (i.e., birational maps which induce an isomorphism between open subsets whose respective complements have codimension at least 3) between moduli spaces of parabolic vector bundles with…

Algebraic Geometry · Mathematics 2022-06-03 David Alfaya

This is the second part of the paper (the first part is published in Jour. of AMS, vol.9, 1135--1170, q-alg/9508017). In the first part, we defined for every modular tensor category (MTC) inner products on the spaces of morphisms and proved…

q-alg · Mathematics 2008-11-26 Alexander Kirillov

This article develops a practical technique for studying representations of $\Bbbk$-linear categories arising in the categorification of quantum groups. We work in terms of locally unital algebras which are $\mathbb{Z}$-graded with graded…

Representation Theory · Mathematics 2025-08-05 Jonathan Brundan

We classify the propositional modal validities arising from the category of sets under its natural classes of morphisms. The resulting validities depend on the morphism class, the size of the world, and the permitted substitution instances.…

Logic · Mathematics 2026-04-29 Wojciech Aleksander Wołoszyn

We introduce notions of stationarily ordered types and theories; the latter generalizes weak o-minimality and the first is a relaxed version of weak o-minimality localized at the locus of a single type. We show that forking, as a binary…

Logic · Mathematics 2019-12-19 Slavko Moconja , Predrag Tanović

We consider genus 1 enumerative invariants arising from the Smyth-Viscardi moduli space of stable maps from curves with nodes and cusps. We prove that these invariants are equal to the Vakil-Zinger reduced invariants for the quintic…

Algebraic Geometry · Mathematics 2018-01-25 Luca Battistella , Francesca Carocci , Cristina Manolache

Walker-Wang models are fixed-point models of topological order in $3+1$ dimensions constructed from a braided fusion category. For a modular input category $\mathcal M$, the model itself is invertible and is believed to be in a trivial…

Strongly Correlated Electrons · Physics 2023-03-14 Andreas Bauer

We complement the recent theory of general singular integrals $T$ invariant under the Zygmund dilations $(x_1, x_2, x_3) \mapsto (s x_1, tx_2, st x_3)$ by proving necessary and sufficient conditions for the boundedness and compactness of…

Classical Analysis and ODEs · Mathematics 2024-12-04 Kangwei Li , Henri Martikainen

We consider two dimensional $\mathcal{N}=(4,4)$ superconformal field theories in the moduli space of symmetric orbifolds of K3. We complete a classification of the discrete groups of symmetries of these models, conditional to a series of…

High Energy Physics - Theory · Physics 2020-01-08 Roberto Volpato

The quantum modular invariant of a real number is defined as a discontinuous, PGL(2,Z)-invariant multi-valued map using the distance-to-the-nearest-integer function. On the rationals, the quantum modular invariant is shown to be infinity…

Number Theory · Mathematics 2013-09-04 C. Castaño Bernard , T. M. Gendron

Lie conformal algebras $\mathcal{W}(a,b)$ are the semi-direct sums of Virasoro Lie conformal algebra and its nontrivial conformal modules of rank one. In this paper, we give a complete classification of extensions of finite irreducible…

Representation Theory · Mathematics 2019-07-05 Lipeng Luo , Yanyong Hong , Zhixiang Wu

We study the problem of realising modular invariants by braided subfactors and the related problem of classifying nimreps. We develop the fusion rule structure of these modular invariants. This structure is useful tool in the analysis of…

Operator Algebras · Mathematics 2009-11-10 David E Evans , Paulo R Pinto

In this article, we review some aspects of logarithmic conformal field theories which can be inferred from the characters of irreducible submodules of indecomposable modules. We will mainly consider the W(2,2p-1,2p-1,2p-1) series of triplet…

High Energy Physics - Theory · Physics 2014-01-07 Michael Flohr , Michael Koehn
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