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In this paper, we define an ordering relation for a set of complex numbers, and research the properties and theorems of the ordering, solve some simple complex inequalities with the ordering.

General Mathematics · Mathematics 2010-03-26 Sun Daochun , Gu Zhendong , Liu Weiqun , Yue Chao

In this paper we prove some new series for $1/\pi$ as well as related congruences. We also raise several new kinds of series for $1/\pi$ and present some related conjectural congruences involving representations of primes by binary…

Number Theory · Mathematics 2017-12-27 Zhi-Wei Sun

The aim of this expository article is twofold. The first is to introduce several polynomials of one variable as well as two variables defined on the positive integers with values as congruent numbers. The second is to present connections…

History and Overview · Mathematics 2011-01-04 Farzali Izadi

We have computed a table of the triangle sides of all congruent numbers less than 10,000, which improves and extends the existing public table. We give some background on properties of the triangle sides, and explain how we computed our…

Number Theory · Mathematics 2021-06-15 David Goldberg

Taking a new approach towards analyzing the Collatz Problem, or, 3x+1 conjecture. Introducing some new functions, the Collatz-2 and Collatz-3 sequences, as well as deducing results related to Collatz-2 and Collatz-3 sequences.

General Mathematics · Mathematics 2008-04-24 Roupam Ghosh

A positive integer that is the area of some rational right triangle is called a congruent number. In an algebraic point of view, being a congruent number means satisfying a system of equations. As early as the 1800s, it is understood that…

Number Theory · Mathematics 2020-06-16 Raiza Corpuz

We prove a Lucas-type congruence for q-Delannoy numbers.

Combinatorics · Mathematics 2015-08-11 Hao Pan

This update to my article on Congruent numbers, elliptic curves, and the passage from the local to the global, which appeared in Resonance, December 2009, pp. 1183--1205 (https://www.ias.ac.in/describe/article/reso/014/12/1183-1205) and was…

Number Theory · Mathematics 2022-02-09 Chandan Singh Dalawat

We announce numerous new results in the theory of orthogonal polynomials on the unit circle.

Spectral Theory · Mathematics 2007-05-23 Barry Simon

In this paper, we introduce a new type of coupled fixed point theorem in partially ordered complete metric space. We give an example to support of our result.

General Topology · Mathematics 2017-03-31 Isa Yildirim

In this paper, $p$ and $q$ are two different odd primes. First, We construct the congruent elliptic curves corresponding to $p$, $2p$, $pq$, and $2pq,$ then, in the cases of congruent numbers, we determine the rank of the corresponding…

Number Theory · Mathematics 2017-01-11 Farzali Izadi , Hamid Reza Abdolmaleki

We study the Frobenius problem for certain k-tuplets, which include prime k-tuplets, in particular prime triplets and prime quadruplets. Moreover, we analyze some properties of the numerical semigroups associated with these tuplets.

Number Theory · Mathematics 2023-05-29 Aureliano M. Robles-Pérez , José Carlos Rosales

We compute the Frobenius number for sequences of triangular and tetrahedral numbers. In addition, we study some properties of the numerical semigroups associated to those sequences.

Number Theory · Mathematics 2018-03-06 Aureliano M. Robles-Pérez , José Carlos Rosales

We obtain new recurrence relations, an explicit formula, and convolution identities for higher order geometric polynomials. These relations generalize known results for geometric polynomials, and lead to congruences for higher order…

Number Theory · Mathematics 2021-06-08 Levent Kargın , Mehmet Cenkci

We discuss an unusual phenomenon in (integral) positive ternary quadratic forms. We also describe an interesting pairing of genera of ternary forms.

Number Theory · Mathematics 2012-05-11 William C. Jagy

We present a new and useful congruence identity satisfied by m-permutable varieties.

General Mathematics · Mathematics 2007-05-23 Paolo Lipparini

A novel type of approximants is introduced, being based on the ideas of self-similar approximation theory. The method is illustrated by the examples possessing the structure typical of many problems in applied mathematics. Good numerical…

Mathematical Physics · Physics 2017-02-03 S. Gluzman , V. I. Yukalov

In the present paper we obtain several new results related to the problem of upper bound estimates for the number of solutions of the congruence $$ x^{x}\equiv \lambda\pmod p;\quad x\in \mathbb{N},\quad x\le p-1, $$ where $p$ is a large…

Number Theory · Mathematics 2015-03-11 Javier Cilleruelo , Moubariz Z. Garaev

In this paper, new upper and lower bounds for the Trapezoid inequality of absolutely continuous functions are obtained. Applications to some special means are provided as well.

Classical Analysis and ODEs · Mathematics 2014-11-06 Mohammad W. Alomari

We give a new recurrent inequality on a class of vertex Folkman numbers.

Combinatorics · Mathematics 2007-05-23 Nikolay Rangelov Kolev , Nedyalko Dimov Nenov