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By using a jump transformation associated to the Romik map, we define a new continued fraction algorithm called odd-odd continued fraction, whose principal convergents are rational numbers of odd denominators and odd numerators. Among…

Dynamical Systems · Mathematics 2024-03-20 Dong Han Kim , Seul Bee Lee , Lingmin Liao

We derive a rigorous, quantum mechanical map of fermionic creation and annihilation operators to continuous Cartesian variables that exactly reproduces the matrix structure of the many-fermion problem. We show how our scheme can be used to…

Chemical Physics · Physics 2018-03-20 Andrés Montoya-Castillo , Thomas E. Markland

The disadvantage of `traditional' multidimensional continued fraction algorithms is that it is not known whether they provide simultaneous rational approximations for generic vectors. Following ideas of Dani, Lagarias and Kleinbock-Margulis…

Mathematical Physics · Physics 2015-06-26 K Khanin , J Lopes-Dias , J Marklof

In this work we have presented a rather general and easy-to-apply method for discrete Hilbert space representation of quantum mechanical Green's operators. We have shown that if in some discrete Hilbert space basis representation the…

Quantum Physics · Physics 2016-09-08 Balázs Kónya

Multidimensional continued fractions (MCFs) were introduced by Jacobi and Perron in order to generalize the classical continued fractions. In this paper, we propose an introductive fundamental study about MCFs in the field of the $p$--adic…

Number Theory · Mathematics 2018-05-02 Nadir Murru , Lea Terracini

In a previous paper, we showed the existence of an uncountable set of points on the unit circle at which the Rogers-Ramanujan continued fraction does not converge to a finite value. In this present paper, we generalise this result to a…

Number Theory · Mathematics 2019-01-01 Douglas Bowman , James Mc Laughlin

We study a continued fraction due to Ramanujan, that he recorded as Entry 12 in Chapter 16 of his second notebook. It is presented in Part III of Berndt's volumes on Ramanujan's notebooks. We give two alternate approaches to proving…

Classical Analysis and ODEs · Mathematics 2019-08-12 Gaurav Bhatnagar , Mourad E. H. Ismail

We develop a theory of $p$-adic continued fractions for a quaternion algebra $B$ over $\mathbb Q$ ramified at a rational prime $p$. Many properties holding in the commutative case can be proven also in this setting. In particular, we focus…

Number Theory · Mathematics 2022-08-09 Laura Capuano , Marzio Mula , Lea Terracini

In this work we study qualitative properties of real analytic bounded maps. The main tool is approximation of real valued functions analytic in rectangular domains of the complex plane by continued g-fractions of Wall. As an application,…

Dynamical Systems · Mathematics 2018-08-21 Alexei Tsygvintsev

The problems of matrix spectral factorization and J-spectral factorization appear to be important for practical use in many MIMO control systems. We propose a numerical algorithm for J-spectral factorization which extends Janashia-Lagvilava…

Numerical Analysis · Mathematics 2021-03-19 Lasha Ephremidze , Ilya Spitkovsky

In this paper, we study the continued fraction y(s,r) which satisfies the equation y(s,r)y(s+2r,r)=(s+1)(s+2r-1) for r > 1/2. This continued fraction is a generalization of the Brouncker's continued fraction b(s). We extend the formulas for…

Number Theory · Mathematics 2013-01-17 O. Y. Kushel

The classical orthogonal polynomials are usually defined by the Rodrigues' formula. This paper refers to a fractional extension of the classical Hermite, Laguerre, Jacobi, Charlier, Meixner, Krawtchouk and Hahn polynomials. By means of the…

Classical Analysis and ODEs · Mathematics 2016-08-10 P. Njionou Sadjang , S. Mboutngam

In this paper we study in detail a family of continued fraction expansions of any number in the unit closed interval $[0,1]$ whose digits are differences of consecutive non-positive integer powers of an integer $m \geq 2$. For the…

Number Theory · Mathematics 2013-04-02 Dan Lascu

We exploit transformations relating generalized $q$-series, infinite products, sums over integer partitions, and continued fractions, to find partition-theoretic formulas to compute the values of constants such as $\pi$, and to connect sums…

Number Theory · Mathematics 2016-05-19 Robert Schneider

We explore a bijection between permutations and colored Motzkin paths that has been used in different forms by Foata and Zeilberger, Biane, and Corteel. By giving a visual representation of this bijection in terms of so-called cycle…

Combinatorics · Mathematics 2023-06-22 Sergi Elizalde

In this article we give an approach to define continuous functional calculus for bounded quaternionic normal operators defined on a right quaternionic Hilbert space.

Spectral Theory · Mathematics 2017-11-06 G. Ramesh , P. Santhosh Kumar

We consider expansions of vectors by a general class of multidimensional continued fraction algorithms. If the expansion is eventually periodic, then we describe the possible structure of a matrix corresponding to the repetend, and use it…

Number Theory · Mathematics 2024-05-21 Hanka Řada , Štěpán Starosta , Vítězslav Kala

S. Ramanujan introduced a technique in 1913 for providing analytic expressions for certain Mellin-type integrals which is now known as Ramanujan's Master Theorem. This technique was communicated through his "Quarterly Reports" and has a…

Number Theory · Mathematics 2024-04-10 Omprakash Atale , Mahendra Shirude

We generalize Watson's $ q $-analogue of Ramanujan's Entry 40 continued fraction by deriving solutions to a $ {}_{10} \phi_9 $ series contiguous relation and applying Pincherle's theorem. Watson's result is recovered as a special…

Classical Analysis and ODEs · Mathematics 2008-02-03 Dharma P. Gupta , David R. Masson

A generalization of the regular continued fractions was given by Burger et al. in 2008 [3]. In this paper we give metric properties of this expansion. For the transformation which generates this expansion, its invariant measure and…

Number Theory · Mathematics 2015-10-08 Dan Lascu