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Let $\C$ be a finite projective EI category and $k$ be a field. The singularity category of the category algebra $k\C$ is a tensor triangulated category. We compute its spectrum in the sense of Balmer.

Representation Theory · Mathematics 2018-03-28 Ren Wang

The Hamiltonian of the $N$-particle Calogero model can be expressed in terms of generators of a Lie algebra for a definite class of representations. Maintaining this Lie algebra, its representations, and the flatness of the Riemannian…

High Energy Physics - Theory · Physics 2009-10-31 Oliver Haschke , Werner Ruehl

We present a class of smooth supersymmetric heterotic solutions with a non-compact Eguchi-Hanson space. The non-compact geometry is embedded as the base of a six-dimensional non-Kahler manifold with a non-trivial torus fiber. We solve the…

High Energy Physics - Theory · Physics 2009-12-31 Ji-Xiang Fu , Li-Sheng Tseng , Shing-Tung Yau

We consider a class of stable smoothable n-dimensional varieties, the analogs of stable curves. Assuming the minimal model program in dimension n+1, we prove that this class is bounded. From Kollar's method of constructing projective moduli…

Algebraic Geometry · Mathematics 2007-05-23 Kalle Karu

This paper introduces the concept of the dimension of a triangulated category with respect to a fixed full subcategory. For the bounded derived category of an abelian category, upper bounds of the dimension with respect to a contravariantly…

Representation Theory · Mathematics 2013-10-01 Takuma Aihara , Tokuji Araya , Osamu Iyama , Ryo Takahashi , Michio Yoshiwaki

We consider the parametric representation of the amplitudes of Abelian models in the so-called framework of rank $d$ Tensorial Group Field Theory. These models are called Abelian because their fields live on $U(1)^D$. We concentrate on the…

High Energy Physics - Theory · Physics 2016-02-18 Joseph Ben Geloun , Reiko Toriumi

We extend the results of Riemannian geometry over finite groups and provide a full classification of all linear connections for the minimal noncommutative differential calculus over a finite cyclic group. We solve the torsion-free and…

Mathematical Physics · Physics 2020-12-24 Arkadiusz Bochniak , Andrzej Sitarz , Paweł Zalecki

Given a nondegenerate ternary form $f=f(x_1,x_2,x_3)$ of degree 4 over an algebraically closed field of characteristic zero, we use the geometry of K3 surfaces to construct a certain positive-dimensional family of irreducible…

Algebraic Geometry · Mathematics 2011-03-08 Emre Coskun , Rajesh S. Kulkarni , Yusuf Mustopa

We classify tensors with maximal and next to maximal dimensional symmetry groups under a natural genericity assumption (1-genericity), in dimensions greater than 7. In other words, we classify minimal dimensional orbits in the space of…

Representation Theory · Mathematics 2021-10-11 Austin Conner , Fulvio Gesmundo , Joseph M. Landsberg , Emanuele Ventura

In this paper we generalize the results of [1,2] and derive the full 1/N expansion of colored tensor models in arbitrary dimensions. We detail the expansion for the independent identically distributed model and the topological Boulatov…

General Relativity and Quantum Cosmology · Physics 2015-05-27 Razvan Gurau

In an abelian category $\mathscr{A}$, we can generate torsion pairs from tilting objects of projective dimension $\leq 1$. However, when we look at tilting objects of projective dimension $2$, there is no longer a natural choice of an…

Representation Theory · Mathematics 2024-06-21 Anders S. Kortegaard

Torsion pairs in the category of finitely presented modules over a noetherian ring can be parametrised by the class of cosilting modules. In this paper, we characterise such modules in terms of their indecomposable summands, providing a new…

Representation Theory · Mathematics 2019-11-07 Karin Baur , Rosanna Laking

In this article we prove the existence of pl-flipping and divisorial contractions and pl flips in dimension $n$ for compact K\"ahler varieties, assuming results of the minimal model program in dimension $n-1$. We also give a self contained…

Algebraic Geometry · Mathematics 2024-06-27 Omprokash Das , Christopher Hacon

Two (strongly) zero-dimensional Lindel\"of topological groups whose product has positive covering dimension are constructed. An example of a Lindel\"of (strongly) zero-dimensional space whose free and free Abelian topological groups are not…

General Topology · Mathematics 2022-07-12 Ol'ga Sipacheva

We show that bounded type implies finite type for a constructible subcategory of the module category of a finitely generated algebra over a field, which is a variant of the first Brauer-Thrall conjecture. A full subcategory is constructible…

Representation Theory · Mathematics 2025-07-31 Kevin Schlegel , Andres Fernandez Herrero

We compare the homological support and tensor triangular support for `big' objects in a rigidly-compactly generated tensor triangulated category. We prove that the comparison map from the homological spectrum to the tensor triangular…

Algebraic Topology · Mathematics 2023-01-05 Tobias Barthel , Drew Heard , Beren Sanders

The classification of all fourth-order anisotropic tensor classes for classical linear elasticity is well known. In this article, we review the related problem of explicitly computing the dimension and the expressions of the elements…

Let $\otimes$ be the map which classifies the tensor product of two line bundles, an extension of this map to the space of all codimension 1 algebraic cycles is constructed. It is proved that this extension cannot exist in codimension…

Algebraic Topology · Mathematics 2008-11-27 Luis E. Lopez

In this paper, we investigate the Noether symmetries of a generalized scalar-tensor, Brans-Dicke type cosmological model, in which we consider explicit scalar field dependent couplings to the Ricci scalar, and to the scalar field kinetic…

General Relativity and Quantum Cosmology · Physics 2016-02-03 J. A. Belinchón , T. Harko , M. K. Mak

We introduce a novel class of low-dimensional topological tight-binding models that allow for bound states that are fractionally charged fermions and exhibit non-Abelian braiding statistics. The proposed model consists of a double (single)…

Mesoscale and Nanoscale Physics · Physics 2013-04-10 Jelena Klinovaja , Daniel Loss