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We investigate the relation between the structure of a Moufang loop and its inner mapping group. Moufang loops of odd order with commuting inner mappings have nilpotency class at most two. $6$-divisible Moufang loops with commuting inner…

Group Theory · Mathematics 2015-09-21 Gábor P. Nagy , Petr Vojtěchovský

Imposing an extensional uniformity condition on a non-uniform circuit complexity class C means simply intersecting C with a uniform class L. By contrast, the usual intensional uniformity conditions require that a resource-bounded machine be…

Logic in Computer Science · Computer Science 2008-12-18 Pierre McKenzie , Michael Thomas , Heribert Vollmer

Hidden symmetries are the backbone of Integrable two-dimensional theories. They provide classical solutions of higher dimensional models as well, they seem to survive partially quantisation and their discrete remnants in M-theory called…

High Energy Physics - Theory · Physics 2007-05-23 B. Julia

We present a different combinatorial interpretations of Lucas and Gibonacci numbers. Using these interpretations we prove several new identities, and simplify the proofs of several known identities. Some open problems are discussed towards…

Combinatorics · Mathematics 2020-08-12 Pankaj Jyoti Mahanta , Manjil P. Saikia

It is shown how integrability of the generalized Lie equations of a local analytic Moufang loop is related to the reductivity conditions and Sagle-Yamaguti identity.

Representation Theory · Mathematics 2008-02-28 Eugen Paal

Given a feature set for the shape of a closed loop, it is natural to ask which features in that set do not change when the starting point of the path is moved. For example, in two dimensions, the area enclosed by the path does not depend on…

Rings and Algebras · Mathematics 2024-12-30 Joscha Diehl , Rosa Preiß , Jeremy Reizenstein

An exact invariant operator of time-dependent coupled oscillators is derived using the Liouville-von Neumann equation. The unitary relation between this invariant and the invariant of two uncoupled simple harmonic oscillators is…

Quantum Physics · Physics 2022-10-17 Jeong Ryeol Choi

The theory of quasirandomness has greatly expanded from its inaugural graph theoretical setting to several different combinatorial objects such as hypergraphs, tournaments, permutations, etc. However, these quasirandomness variants have…

Combinatorics · Mathematics 2020-12-23 Leonardo N. Coregliano , Alexander A. Razborov

We associate to every quandle $X$ and an associative ring with unity $\mathbf{k}$, a nonassociative ring $\mathbf{k}[X]$ following [3]. The basic properties of such rings are investigated. In particular, under the assumption that the inner…

Rings and Algebras · Mathematics 2020-08-04 Mohamed Elhamdadi , Neranga Fernando , Boris Tsvelikhovskiy

A fundamental challenge in quantum many-body physics is to understand the universal properties of strongly correlated systems. In this work, we establish a universal and exact identity from the Dyson-Schwinger equations within the…

Strongly Correlated Electrons · Physics 2025-09-23 Hui Li

This paper identifies a new class of shape invariant models. These models are based on extensions of conventional quantum mechanics that satisfy a string-motivated minimal length uncertainty relation. An important feature of our…

Quantum Physics · Physics 2009-11-13 Donald Spector

We review the theory of weakly coupled oscillators for smooth systems. We then examine situations where application of the standard theory falls short and illustrate how it can be extended. Specific examples are given to non-smooth systems…

Adaptation and Self-Organizing Systems · Physics 2020-06-14 Bard Ermentrout , Youngmin Park , Dan Wilson

To describe two-place physical problems, many possible models named Alice-Bob (AB) systems are proposed. To find and to solve these systems, the Parity (P), time reversal (T), charge conjugation (C), shifted-parity ($P_s$, parity with a…

Exactly Solvable and Integrable Systems · Physics 2024-06-04 S. Y. Lou

The three-dimensional classical O($N$) model with a boundary has received renewed interest due to the discovery of the extraordinary-log boundary universality class for $2\leq N< N_c$. The critical value $N_c$ and the exponent of the…

High Energy Physics - Theory · Physics 2026-05-28 Runzhe Hu , Wenliang Li

Understanding invertibility in restricted mis\`ere play has been challenging; in particular, the possibility of non-conjugate inverses posed difficulties. Advances have been made in a few specific universes, but a general theorem was…

Combinatorics · Mathematics 2024-10-10 Alfie Davies , Vishal Yadav

We establish a weak-strong uniqueness result for the isentropic compressible Euler equations, that is: As long as a sufficiently regular solution exists, all energy-admissible weak solutions with the same initial data coincide with it. The…

Analysis of PDEs · Mathematics 2021-03-31 Shyam Sundar Ghoshal , Animesh Jana , Emil Wiedemann

The construction of a $covariant$ Loop Wave functional equation in a 4D spacetime is attained by introducing a generalized $eleven$ dimensional categorical {\bf C}-space comprised of $8\times 8$ antisymmetric matrices. The latter matrices…

High Energy Physics - Theory · Physics 2007-05-23 Carlos Castro

Code loops are Moufang loops constructed from doubly even binary codes. Then, given a code loop L, we ask which doubly even binary code V produces L. In this sense, V is called a representation of L. In this article we define and determine…

Representation Theory · Mathematics 2019-09-12 Rosemary Miguel Pires , Alexandre Grishkov , Marina Rasskazova

This is a survey on known results and open problems about closed aspherical manifolds, i.e., connected closed manifolds whose universal coverings are contractible. Many examples come from certain kinds of non-positive curvature conditions.…

Geometric Topology · Mathematics 2009-07-15 Wolfgang Lueck

Local unitary invariants allow one to test whether multipartite states are equivalent up to local basis changes. Equivalently, they specify the geometry of the "orbit space" obtained by factoring out local unitary action from the state…

Quantum Physics · Physics 2012-12-27 Graeme Mitchison