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We give a simple algorithm for the construction of the tight span of a finite subset of the Manhattan plane.

Metric Geometry · Mathematics 2016-03-07 Mehmet Kılıç , Şahin Koçak , Yunus Özdemir

The pure $O$-sequences of the form $(1,a,a,\ldots)$ are classified.

Combinatorics · Mathematics 2025-04-01 Tài Huy Hà , Takayuki Hibi , Fabrizio Zanello

An astonishingly simple analytical frequency approximation formula for a class of strongly nonlinear oscillators is derived and applied to various example systems yielding useful quick estimates.

Other Condensed Matter · Physics 2016-04-15 Kevin Rapedius

We provide new families of minimal codes in any characteristic. Also, an inductive construction of minimal codes is presented.

Information Theory · Computer Science 2019-12-13 Daniele Bartoli , Matteo Bonini , Burçin Güneş

Double Fibonacci sequences are introduced and they are related to operations with Fibonacci modules. Generalizations and examples are also discussed.

Commutative Algebra · Mathematics 2008-10-23 Abdul Rauf Nizami

The purpose of this short note, is to rewrite Morozov's formula for correlation functions over the unitary group, in a much simpler form, involving the computation of a single determinant.

Mathematical Physics · Physics 2007-05-23 Bertrand Eynard

In this note, we describe a method to construct the Picard-Vessiot ring of a given linear differential equation.

Algebraic Geometry · Mathematics 2019-10-09 Ruyong Feng

We provide direct elementary proofs of several explicit expressions for Bernoulli numbers and Bernoulli polynomials. As a byproduct of our method of proof, we provide natural definitions for generalized Bernoulli numbers and polynomials of…

Number Theory · Mathematics 2012-05-04 Lazhar Fekih-Ahmed

We provide a short proof of the 1-dimensional flat chain conjecture.

Metric Geometry · Mathematics 2026-04-01 Philippe Bouafia , Thierry De Pauw

This paper describes a class of sequences that are in many ways similar to Fibonacci sequences: given n, sum the previous two terms and divide them by the largest possible power of n. The behavior of such sequences depends on n. We analyze…

Number Theory · Mathematics 2014-03-20 Brandon Avila , Tanya Khovanova

We will give a simple proof of the ambiguous class number formula.

Number Theory · Mathematics 2013-09-05 Franz Lemmermeyer

Linear recurrence equations with constant coefficients define the power series coefficients of rational functions. However, one usually prefers to have an explicit formula for the sequence of coefficients, provided that such a formula is…

Symbolic Computation · Computer Science 2022-07-05 Bertrand Teguia Tabuguia , Wolfram Koepf

This paper gives new explicit formulas for sums of powers of integers and their reciprocals.

Combinatorics · Mathematics 2020-06-03 Levent Kargın , Ayhan Dil , Mümün Can

New formulas for the construction of Pythagorean triples and generalizations to equations of higher powers. Application of formulas to some problems, in particular Fermat's equation with n=4.

History and Overview · Mathematics 2023-10-25 Pavlo Deriy

The present note sketches a theory of constructs.

Combinatorics · Mathematics 2019-07-30 Edinah K. Gnang , Jeanine S. Gnang

The Fibonacci sequence is obtained as weighted sum along the rows in the Pascal triangle by choosing a periodic up-and-down pattern of weights from the set $\{-1,-\frac{1}{2},0, \frac{1}{2}, 1\}$. A graphical illustration of this identity…

History and Overview · Mathematics 2018-11-07 Bernhard Moser

Given a set of integers with no three in arithmetic progression, we construct a Stanley sequence by adding integers greedily so that no arithmetic progression is formed. This paper offers two main contributions to the theory of Stanley…

Combinatorics · Mathematics 2017-07-11 Richard A. Moy , David Rolnick

In this note we classify sequences according to whether they are morphic, pure morphic, uniform morphic, pure uniform morphic, primitive morphic, or pure primitive morphic, and for each possibility we either give an example or prove that no…

Formal Languages and Automata Theory · Computer Science 2017-11-30 Jean-Paul Allouche , Julien Cassaigne , Jeffrey Shallit , Luca Q. Zamboni

In this note, we prove a quantization formula for singular reductions. The main result is obtained as a simple application of an extended quantization formula proved in [TZ2].

dg-ga · Mathematics 2008-02-03 Youliang Tian , Weiping Zhang

In this paper we study how to accelerate the convergence of the ratios (x_n) of generalized Fibonacci sequences. In particular, we provide recurrent formulas in order to generate subsequences (x_{g_n}) for every linear recurrent sequence…

Number Theory · Mathematics 2013-01-16 Marco Abrate , Stefano Barbero , Umberto Cerruti , Nadir Murru