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We study the action of the dihedral group on the (equivariant) cohomology of the toric manifolds associated with cycle graphs.

Algebraic Topology · Mathematics 2017-09-12 Seonjeong Park

Let E be an elliptic curve defined over Q. We study the relationship between the torsion subgroup E(Q)_tors and the torsion subgroup E(K)_tors, where K is a quadratic number field.

Number Theory · Mathematics 2014-11-14 Enrique Gonzalez-Jimenez , Jose M. Tornero

This article introduces a new method to construct volume-filling symplectic embeddings of 4-dimensional ellipsoids by employing polytope mutations in toric and almost-toric varieties. The construction uniformly recovers the full sequences…

Symplectic Geometry · Mathematics 2023-06-22 Roger Casals , Renato Vianna

We propose relativistic generalization of integrable systems describing $M$ interacting elliptic ${\rm gl}(N)$ tops of the Euler-Arnold type. The obtained models are elliptic integrable systems, which reproduce the spin elliptic ${\rm…

Mathematical Physics · Physics 2020-01-08 A. Zotov

We consider commutative C* -algebras of Toeplitz operators in the weighted Bergman space on the unit ball in $\mathbb{C}^{\mathbf{n}}$. For the algebras of elliptic type we find a new representation, namely as the algebra of operators which…

Functional Analysis · Mathematics 2022-11-22 Grigori Rozenblum , Nikolai Vasilevski

We produce a fully faithful functor from finite type nilpotent spaces to cosimplicial binomial rings, thus giving an algebraic model of integral homotopy types. As an application, we construct an integral version of the…

Algebraic Topology · Mathematics 2025-03-25 Geoffroy Horel

We study cobordisms of a class of topological operads called ``manifold operads''. These operads are generalizations of the Fulton-MacPherson operad: an operad built from configurations of points in Euclidean space. Cobordism of manifold…

Algebraic Topology · Mathematics 2026-05-14 Xujia Chen , Connor Malin , Paolo Salvatore

This paper demonstrates a topological meaning of quandle cocycle invariants of links with respect to finite connected quandles $X$, from a perspective of homotopy theory: Specifically, for any prime $\ell$ which does not divide the type of…

Geometric Topology · Mathematics 2015-05-13 Takefumi Nosaka

We consider isomonodromic deformations of connections with a simple pole on the torus, motivated by the elliptic version of the sixth Painlev\'e equation. We establish an extended symmetry, complementing known results. The Calogero-Moser…

Mathematical Physics · Physics 2024-11-22 Mohamad Alameddine

It is known that one can associate a Kontsevich-type formality morphism to every Drinfeld associator. We show that this morphism may be extended to a Kontsevich-Shoikhet formality morphism of cochains and chains, by describing the action of…

Quantum Algebra · Mathematics 2014-01-15 Thomas Willwacher

We give an algorithm for computing the Teichm\"uller polynomial for a certain class of fibered alternating links associated to trees. Furthermore, we exhibit a mutant pair of such links distinguished by the Teichm\"uller polynomial.

Geometric Topology · Mathematics 2020-03-27 Robert Billet , Livio Liechti

Given a homomorphism from a link group to a group, we introduce a $K_1$-class in another way, which is a generalization of the 1-variable Alexander polynomial. We compare the $K_1$-class with $K_1$-classes in \cite{Nos} and with…

Geometric Topology · Mathematics 2020-05-04 Takefumi Nosaka

Let $n \geq 1$ be an odd integer. We construct an anticyclotomic Euler system for certain cuspidal automorphic representations of unitary groups with signature $(1, 2n-1)$.

Number Theory · Mathematics 2023-12-05 Andrew Graham , Syed Waqar Ali Shah

We give an intrinsic definition of toric symplectic stacks, and show that they are classified by simple convex polytopes equipped with some additional combinatorial data. This generalizes Delzant's classification of toric symplectic…

Symplectic Geometry · Mathematics 2020-02-20 Benjamin Hoffman

We establish the stable homotopy classification of elliptic pseudodifferential operators on manifolds with corners and show that the set of elliptic operators modulo stable homotopy is isomorphic to the K-homology group of some stratified…

K-Theory and Homology · Mathematics 2007-05-23 V. E. Nazaikinskii , A. Yu. Savin , B. Yu. Sternin

We calculate the automorphism group of certain Enriques surfaces. The Enriques surfaces that we investigate include very general $n$-nodal Enriques surfaces and very general cuspidal Enriques surfaces. We also describe the action of the…

Algebraic Geometry · Mathematics 2021-06-16 Simon Brandhorst , Ichiro Shimada

We generalize a new class of cluster type mutations for which exchange transformations are given by reciprocal polynomials. In the case of second-order polynomials of the form $x+2\cos{\pi/n_o}+x^{-1}$ these transformations are related to…

Mathematical Physics · Physics 2014-08-22 Leonid Chekhov , Michael Shapiro

We consider a claim mentioned in \cite{Witten} pp 187 about the relation between a symplectic chain complex with $\omega-$compatible bases and Reidemeister Torsion of it. This is an explanation of it.

Geometric Topology · Mathematics 2007-05-23 Yasar Sozen

We introduce toric arrangements, essentially finite families of codimension 1 subtori of a torus or of their cosets, as a periodic generalization of hyperplane arrangements, compute cohomology of the complement of such an arrangement and…

Algebraic Geometry · Mathematics 2007-05-23 C. De Concini , C. Procesi

We give a presentation in terms of generators and relations of the cohomology in degree zero of the Campos-Willwacher graph complexes associated to compact orientable surfaces of genus $g$. The results carry a natural Lie algebra structure,…

Quantum Algebra · Mathematics 2021-05-06 Matteo Felder