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This paper introduces an algebra structure on the part of the skein module of an arbitrary $3$-manifold $M$ spanned by links that represent $0$ in $H_1(M;\mathbb{Z}_2)$ when the value of the parameter used in the Kauffman bracket skein…

Geometric Topology · Mathematics 2023-09-19 Charles Frohman , Joanna Kania-Bartoszynska , Thang Le

In his study of amenable unitary representations, M. E. B. Bekka asked if there is an analogue for such representations of the remarkable fixed-point property for amenable groups. In this paper, we prove such a fixed-point theorem in the…

Operator Algebras · Mathematics 2007-05-23 Anthony T. Lau , Alan L. T. Paterson

We give a survey on the theory of representation-finite and certain minimal representation-infinite algebras.The main goals are the existence of multiplicative bases and of coverings with good properties. Both are attained via…

Representation Theory · Mathematics 2013-02-06 Klaus Bongartz

Let $K$ be a number field and let $G$ be a finitely generated subgroup of $K^\times$. For all but finitely many primes $\mathfrak p$ of $K$, the reduction $(G \bmod \mathfrak p)$ generates a well-defined subgroup of the multiplicative group…

Number Theory · Mathematics 2025-08-13 Pietro Sgobba

We prove several trace inequalities that extend the Golden-Thompson and the Araki-Lieb-Thirring inequality to arbitrarily many matrices. In particular, we strengthen Lieb's triple matrix inequality. As an example application of our four…

Mathematical Physics · Physics 2017-03-17 David Sutter , Mario Berta , Marco Tomamichel

We explain how a simple twisting of the notion of spectral triple allows to incorporate type III examples, such as those arising from the transverse geometry of codimension one foliations. Since the twisting of the commutators turns the…

Operator Algebras · Mathematics 2007-05-23 Alain Connes , Henri Moscovici

We prove Cuntz-Krieger and graded uniqueness theorems for Steinberg algebras. We also show that a Steinberg algebra is basically simple if and only if its associated groupoid is both effective and minimal. Finally we use results of…

Rings and Algebras · Mathematics 2014-03-20 Lisa Orloff Clark , Cain Edie-Michell

It was shown that quantum metric fluctuations smear out the singularities of Green's functions on the light cone [1], but it does not remove other ultraviolet divergences of quantum field theory. We have proved that the quantum field theory…

General Relativity and Quantum Cosmology · Physics 2011-06-02 S. Rouhani , M. V. Takook

We prove the Riemann Hypothesis via an analytically regulated surface integral over the critical strip of the Riemann zeta function. The key idea is that the convergence of this normalized integral is equivalent to the condition that all…

General Mathematics · Mathematics 2025-08-11 Dennis-Magnus Welz

The landmark quantum complexity result MIP$^*$=RE was used to prove the existence of a non Connes embeddable tracial von Neumann algebra. Recently, similar ideas were used to give a negative solution to the Aldous-Lyons conjecture: there is…

Operator Algebras · Mathematics 2026-04-07 Aareyan Manzoor

We present a short new proof of Cobham's theorem without using Kronecker's approximation theorem, making it suitable for generalization beyond automatic sequences.

Formal Languages and Automata Theory · Computer Science 2018-01-23 Thijmen J. P. Krebs

In a series of papers, we have shown that from the representatio theory of a compact groupoid one can reconstruct the groupoid using the procedure similar to the Tannaka-Krein duality for compact groups. In this part we study continuous…

Operator Algebras · Mathematics 2007-05-23 Massoud Amini

In this article, we define and study the affine and cyclotomic Yokonuma-Hecke algebras. These algebras generalise at the same time the Ariki-Koike and affine Hecke algebras and the Yokonuma-Hecke algebras. We study the representation theory…

Representation Theory · Mathematics 2019-06-18 Maria Chlouveraki , Loïc Poulain d'Andecy

The classical Kramer sampling theorem establishes general conditions that allow the reconstruction of functions by mean of orthogonal sampling formulae. One major task in sampling theory is to find concrete, non trivial realizations of this…

Spectral Theory · Mathematics 2009-11-13 Luis O. Silva , Julio H. Toloza

Let L_1 be the predual of a von Neumann algebra with a finite faithful normal trace. We show that a bounded sequence in L_1 converges to 0 in measure if and only if each of its subsequences admits another subsequence which converges to 0 in…

Functional Analysis · Mathematics 2007-05-23 Hermann Pfitzner

The first and last named authors have demonstrated the existence of knots for which every integral slope is non-characterizing. In this short note, we extend this result in two ways. There exists a knot that shares for every integer n the…

Geometric Topology · Mathematics 2025-12-16 Kenneth L. Baker , Marc Kegel , Kimihiko Motegi

The theory of direct integral decompositions of both bounded and unbounded operators is further developed; in particular, results about spectral projections, functional calculus and affiliation to von Neumann algebras are proved. For…

Operator Algebras · Mathematics 2015-09-14 Ken Dykema , Joseph Noles , Fedor Sukochev , Dmitriy Zanin

It is shown that the pairing of the K00 group of a C*-algebra with the densely defined traces of the algebra can be extended to a pairing with the densely defined weights. For traces the pairing can be extended to the K0 group without the…

Operator Algebras · Mathematics 2024-03-15 Klaus Thomsen

We prove the analog of Cram\'er's short intervals theorem for primes in arithmetic progressions and prime ideals, under the relevant Riemann Hypothesis. Both results are uniform in the data of the underlying structure. Our approach is based…

Number Theory · Mathematics 2017-02-15 L. Grenié , G. Molteni , A. Perelli

Let $G = Spec A$ be an affine $K$-group scheme and $\tilde{A} = \{w \in A*: dim_K A^* \cdot w \cdot A^* < \infty \}$. Let $< -,-> : A^* \times \tilde{A} \to K, (w,\tilde{w}) := tr(w \tilde{w})$, be the trace form. We prove that $G$ is…

Algebraic Geometry · Mathematics 2009-09-01 Amelia Álvarez , Carlos Sancho , Pedro Sancho
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