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Related papers: Lidskii-type formulae for Dixmier traces

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In a previous paper we established Cwikel-type estimates on noncommutative tori and used them to get analogues in this setting of the Cwikel-Lieb-Rozenblum (CLR) and Lieb-Thirring inequalities for negative eigenvalues of fractional…

Operator Algebras · Mathematics 2022-08-04 Edward McDonald , Raphael Ponge

We develop some applications of certain algebraic and combinatorial conditions on the elements of Coxeter groups, such as elementary proofs of the positivity of certain structure constants for the associated Kazhdan--Lusztig basis. We also…

Quantum Algebra · Mathematics 2007-05-23 R. M. Green

We show on the example of the discrete heat equation that for any given discrete derivative we can construct a nontrivial Leibniz rule suitable to find the symmetries of discrete equations. In this way we obtain a symmetry Lie algebra,…

Exactly Solvable and Integrable Systems · Physics 2009-10-31 D. Levi , J. Negro , M. A. del Olmo

We adapt methods coming from additive combinatorics in groups to the study of linear span in associative unital algebras. In particular, we establish for these algebras analogues of Diderrich-Kneser's and Hamidoune's theorems on sumsets and…

Combinatorics · Mathematics 2015-06-24 Vincent Beck , Cédric Lecouvey

Classical H.Minkowski theorems on existence and uniqueness of convex polyhedra with prescribed directions and areas of faces as well as the well-known generalization of H.Minkowski uniqueness theorem due to A.D.Alexandrov are extended to a…

Metric Geometry · Mathematics 2007-05-23 Victor Alexandrov

The goal of this paper is to present results which are consistent with conjectures about the Leibniz (co)homology for discrete groups stated by J. L. Loday. We show that rack cohomology has properties very close to the properties expected…

K-Theory and Homology · Mathematics 2012-06-04 Simon Covez

We define the rigid homology. The trace morphism in rigid cohomology define by duality the cycle class in rigid homology. We verify the compatibility of this classes with rationnal equivalence and intersection theory. We deduce some formal…

Algebraic Geometry · Mathematics 2007-05-23 Petrequin Denis

We overview some of the foundations of the so-called henselian rigid geometry, and show that henselian rigid geometry has many aspects, useful in applications, that one cannot expect in the usual rigid geometry. This is done by announcing a…

Algebraic Geometry · Mathematics 2017-02-03 Fumiharu Kato

We define two types of pseudo-differential perturbations of the Dirac operator within the framework of the noncommutative geometry. And we obtain the noncommutative residue of the inverse square of these perturbations on 4-dimensional…

Differential Geometry · Mathematics 2024-09-26 Tong Wu , Yong Wang

We study the relation between algebraic structures and Graph Theory. We have defined five different weighted digraphs associated to a finite dimensional algebra over a field in order to tackle important properties of the associated…

Combinatorics · Mathematics 2017-06-05 R. M. Aquino , L. M. Camacho , E. M. Cañete , C. Cavalgante , A. Márquez

In 20th century mathematics, the field of topology, which concerns the properties of geometric objects under continuous transformation, has proved surprisingly useful in application to the study of discrete mathematics, such as…

History and Overview · Mathematics 2024-05-10 Jingsi Hou , Guangyan Huang , Sammy Suliman , Haoran Yan

This paper is based on talks delivered in summer 2008 at the Conference on Motives, QFT and Pseudodifferential Operators in Boston, and at the Trimester programme Geometry and Physics, Hausdorff Institute for Mathematics in Bonn The paper…

Operator Algebras · Mathematics 2012-03-12 Matthias Lesch

Standard combinatorial construction, due to Kontsevich, associates to any $\ai$-algebra with an invariant inner product, an inhomogeneous class in the cohomology of the moduli spaces of Riemann surfaces with marked points. We propose an…

Algebraic Topology · Mathematics 2008-01-08 Alastair Hamilton , Andrey Lazarev

We prove that a normalised linear functional on certain semifinite symmetric spaces respects tail majorisation if and only if it is a Dixmier-type trace.

Functional Analysis · Mathematics 2024-01-11 Galina Levitina , Alexandr Usachev

Some families of graphs, such as the n-cubes and Sierpinski gaskets, are self-similar. In this paper we show how such recursive structure can be used systematically to prove isoperimetric theorems.

Combinatorics · Mathematics 2016-10-10 L. H. Harper

Of four types of Kaplansky algebras, type-2 and type-4 algebras have previously unobserved $\mathbb{Z}/2$-gradings: nonlinear in roots. A method assigning a simple Lie superalgebra to every $\mathbb{Z}/2$-graded simple Lie algebra in…

Representation Theory · Mathematics 2024-09-17 Sofiane Bouarroudj , Alexei Lebedev , Dimitry Leites , Irina Shchepochkina

We study the space of non-degenerate traces on quantized Kleinian singularities of type A by studying their complement, the degenerate traces. In particular, we find the dimension of the space of twisted traces as a function of the…

Rings and Algebras · Mathematics 2026-02-26 Zev Friedman , Ben Webster

We show that in any symmetric monoidal category, if a weight for colimits is absolute, then the resulting colimit of any diagram of dualizable objects is again dualizable. Moreover, in this case, if an endomorphism of the colimit is induced…

Category Theory · Mathematics 2014-07-01 Kate Ponto , Michael Shulman

In the article we give some estimations of the {\L}ojasiewicz exponent of nondegenerate surface singularities in terms of their Newton diagrams. We also give an exact formula for the {\L}ojasiewicz exponent of such singularities in some…

Complex Variables · Mathematics 2011-10-20 Grzegorz Oleksik

We study some general properties of tracial C*-algebras. In the first part, we consider Dixmier type approximation theorem and characterize symmetric amenability for C*-algebras. In the second part, we consider continuous bundles of tracial…

Operator Algebras · Mathematics 2015-01-27 Narutaka Ozawa
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