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In this paper we prove that there does not exist a subgroup $H$ of a finite group $G$ such that the number of isomorphism classes of normalized right transversals of $H$ in $G$ is four.

Group Theory · Mathematics 2012-03-29 Vipul Kakkar , R. P. Shukla

Let $f$ be a map with bounded set of singular values for which periodic dynamic rays exist and land. We prove that each non-repelling cycle is associated to a singular orbit which cannot accumulate on any other non-repelling cycle. When $f$…

Dynamical Systems · Mathematics 2017-12-04 Anna Miriam Benini , Núria Fagella

We prove that there does not exist a nontrivial quantization of the Poisson algebra of the symplectic manifold S^2 which is irreducible on the subalgebra generated by the components {S_1,S_2,S_3} of the spin vector. We also show that there…

dg-ga · Mathematics 2016-08-31 Mark J. Gotay , Hendrik Grundling , C. A. Hurst

Recently Yu. Bilu, P. Habegger and L. K\"uhne proved that no singular modulus can be a unit in the ring of algebraic integers. In this paper we study for which sets S of prime numbers there is no singular modulus that is an S-units. Here we…

Number Theory · Mathematics 2020-08-26 Francesco Campagna

For spherically symmetric repulsive Hamiltonians we prove Rellich's theorem, or identify the largest weighted space of Agmon-H\"ormander type where the generalized eigenfunctions are absent. The proof is intensively dependent on commutator…

Functional Analysis · Mathematics 2017-04-10 Kyohei Itakura

We prove that any Galois extension of commutative rings with normal basis and abelian Galois group of odd order has a self dual normal basis. Also we show that if S/R is an unramified extension of number rings with Galois group of odd order…

Number Theory · Mathematics 2007-05-23 Marcin Mazur

This paper proves the non-existence of common K\"ahler submanifolds of the complex Euclidean space and the symmetrized polydisc endowed with their canonical metrics.

Complex Variables · Mathematics 2018-03-20 Guicong Su , Yanyan Tang , Zhenhan Tu

Nous montrons la densite des cycles repulsifs dans l'ensemble de Julia des fonctions meromorphes transcendentes a une variable complexe, sans utiliser le theoreme des cinq iles d'Ahlfors ni la theorie de Nevanlinna. ----- We prove that…

Complex Variables · Mathematics 2008-06-24 Claudio Meneghini

We prove that there are only finitely many conjugacy classes of arithmetic maximal hyperbolic reflection groups.

Geometric Topology · Mathematics 2007-05-23 Ian Agol , Mikhail Belolipetsky , Peter Storm , Kevin Whyte

We show that there are no arithmetic fake compact hermitian symmetric spaces of type other than An for n>4.

Algebraic Geometry · Mathematics 2012-04-27 Gopal Prasad , Sai-Kee Yeung

We prove that on $\mathbb{R}^n$, there is no $N$-supercyclic operator with $1\leq N< \lfloor \frac{n+1}{2}\rfloor$ i.e. if $\mathbb{R}^n$ has an $N$ dimensional subspace whose orbit under $T$ is dense in $\mathbb{R}^n$, then $N$ is greater…

Functional Analysis · Mathematics 2014-01-07 Romuald Ernst

Let $S(0,1)$ be the $*$-algebra of all classes of Lebesgue measurable functions on the unit interval $(0,1)$ and let $(\mathcal{A},\left\|\cdot \right\|_\mathcal{A})$ be a complete symmetric $\Delta$-normed $*$-subalgebra of $S(0,1)$, in…

Functional Analysis · Mathematics 2020-02-04 Aleksey Ber , Jinghao Huang , Karimbergen Kudaybergenov , Fedor Sukochev

We show that the iterative logarithm of each non-linear entire function is differentially transcendental over the ring of entire functions, and we give a sufficient criterion for such an iterative logarithm to be differentially…

Complex Variables · Mathematics 2016-05-26 Matthias Aschenbrenner , Walter Bergweiler

In this paper we prove a topological nonrealizability theorem: certain classes of graded $BP_*$-modules are shown to never occur as the $BP$-homology of a spectrum. Many of these $BP_*$-modules admit the structure of $BP_*BP$-comodules,…

Algebraic Topology · Mathematics 2016-07-06 A. Salch

We show that certain sums of products of Hermite-Biehler entire functions have only real zeros, extending results of Cardon. As applications of this theorem we construct sums of exponential functions having only real zeros, we construct…

Complex Variables · Mathematics 2007-08-06 Steven R. Adams , David A. Cardon

Our main result provides a closed expression for the completely bounded Fourier multiplier norm of the spherical functions on the generalized Lorentz groups. As a corollary, we find that there is no uniform bound on the completely bounded…

Representation Theory · Mathematics 2009-11-30 Troels Steenstrup

We show that families of translation operators, where the translates grow exponentially fast, do not admit common hypercyclic functions. The result is close to be optimal.

Functional Analysis · Mathematics 2014-12-04 George Costakis , Nikos Tsirivas , Vagia Vlachou

This paper is devoted to the study of non-existence of certain type of convex functions on a Riemannian manifold with a pole. To this end, we have developed the notion of odd and even function on a Riemannian manifold with a pole and proved…

Differential Geometry · Mathematics 2019-07-08 Absos Ali Shaikh , Chandan Kumar Mondal , Izhar Ahmad

Let R be a commutative ring with identity and S be a multiplicatively closed subset of R. The aim of this paper is to introduce the notion of fully S-idempotent modules as a generalization of fully idempotent modules and investigate some…

Commutative Algebra · Mathematics 2020-07-07 Faranak Farshadifar

Let $S=\{x^2+c_1, x^2+c_2,\dots, x^2+c_s\}$ be a set of quadratic polynomials with rational coefficients, and let $P$ be a rational basepoint. We classify the pairs $(S,P)$ for which $P$ has finite orbit for $S$, assuming that the maximum…

Number Theory · Mathematics 2018-10-12 Wade Hindes