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The clustering of integers with equal total stopping times has long been observed in the 3x + 1 Problem, and a number of elementary results about it have been used repeatedly in the literature. In this paper we introduce a simple…

Number Theory · Mathematics 2017-11-17 Mark D. LaDue

Let $N_a$ be the number of solutions to the equation $x^{2^k+1}+x+a=0$ in $\GF {n}$ where $\gcd(k,n)=1$. In 2004, by Bluher \cite{BLUHER2004} it was known that possible values of $N_a$ are only 0, 1 and 3. In 2008, Helleseth and Kholosha…

Information Theory · Computer Science 2019-03-19 Kwang Ho Kim , Sihem Mesnager

In this article we present set of infinite natural numbers which satisfies the conjecture $3n+1$.

General Mathematics · Mathematics 2016-08-05 G. H. S. Costa , A. C. Souza Filho

In this paper, we provide an easy proof of the Four-colour Theorem in a special case indeed.

General Mathematics · Mathematics 2018-07-09 Bin Shen

In a previous article, we reduced the unsolved problem of the convergence of Collatz sequences, to convergence of Collatz sequences of odd numbers, that are divisible by 3. In this article, we further reduce this set to odd numbers that are…

Combinatorics · Mathematics 2020-01-07 Maya Mohsin Ahmed

This article is an overview of the vanishing cycles method in number theory over function fields. We first explain how this works in detail in a toy example, and then give three examples which are relevant to current research. The focus…

Number Theory · Mathematics 2020-06-01 Will Sawin

We give three new proofs of the triangle inequality in Euclidean Geometry. There seems to be only one known proof at the moment. It is due to properties of triangles, but our proofs are due to circles or ellipses. We aim to prove the…

General Mathematics · Mathematics 2020-01-30 Norihiro Someyama , Mark Lyndon Adamas Borongan

We introduce and study a new kind of congruent number problem on the right trapezoid.

Number Theory · Mathematics 2016-05-24 Tianxin Cai , Yong Zhang

We study triples {a,b,c} of distinct nonzero rational numbers such that a+1,b+1,c+1,ab+1,ac+1,bc+1 and abc+1 are all perfect squares. We prove that there exist infinitely many such triples. In contrast, we show that no triple of positive…

Number Theory · Mathematics 2026-04-13 Andrej Dujella , Matija Kazalicki , Vinko Petričević

It is well known that the Collatz Conjecture can be reinterpreted as the Collatz Graph with root vertex 1, asking whether all positive integers are within the tree generated. It is further known that any cycle in the Collatz Graph can be…

General Mathematics · Mathematics 2023-09-01 Q Le , Edward Smith

We consider a variant of the ABC Conjecture, attempting to count the number of solutions to $A+B+C=0$, in relatively prime integers $A,B,C$ each of absolute value less than $N$ with $r(A)<|A|^a, r(B)<|B|^b, r(C)<|C|^c.$ The ABC Conjecture…

Number Theory · Mathematics 2014-09-17 Daniel M. Kane

We expand the theory of log canonical $3$-fold complements. We prove that if $X\rightarrow T$ is a $3$-dimensional contraction of log Calabi-Yau type, then we can find $B\geq 0$ on $X$ for which $(X,B)$ is log canonical and $n(K_X+B)\sim_T…

Algebraic Geometry · Mathematics 2022-01-06 Stefano Filipazzi , Joaquín Moraga , Yanning Xu

We show that there are arbitrarily large sets $S$ of $s$ primes for which the number of solutions to $a+1=c$ where all prime factors of $ac$ lie in $S$ has $\gg \exp( s^{1/4}/\log s)$ solutions.

Number Theory · Mathematics 2019-02-21 Junsoo Ha , Kannan Soundararajan

The Cyclic Coloring Conjecture asserts that the vertices of every plane graph with maximum face size D can be colored using at most 3D/2 colors in such a way that no face is incident with two vertices of the same color. The Cyclic Coloring…

Combinatorics · Mathematics 2016-02-08 Michael Hebdige , Daniel Kral

We prove that there are infinitely many integers $n$ such that $n$ and $n+1$ have the same number of distinct prime divisors.

Number Theory · Mathematics 2011-05-10 Jan-Christoph Schlage-Puchta

It is known that there are infinitely-many prime numbers which take the form of a polynomial of degree one with integer coefficients, this is Dirichlet's theorem. We use an elementary sieving argument together with bounds on the prime…

Number Theory · Mathematics 2017-07-24 Acquaah Peter

By means of $q$-series, we prove that any natural number is a sum of an even square and two triangular numbers, and that each positive integer is a sum of a triangular number plus $x^2+y^2$ for some integers $x$ and $y$ with $x\not\equiv y…

Number Theory · Mathematics 2007-05-23 Zhi-Wei Sun

The notion of (3+1)-avoidance has shown up in many places in enumerative combinatorics. The natural goal of enumeration of all (3+1)-avoiding posets remains open. In this paper, we enumerate graded (3+1)-avoiding posets for both reasonable…

Combinatorics · Mathematics 2015-10-15 Joel Brewster Lewis , Yan X Zhang

It is conjectured that for any fixed relatively prime positive integers $a,b$ and $c$ all greater than 1 there is at most one solution to the equation $a^x+b^y=c^z$ in positive integers $x,y$ and $z$, except for specific cases. We develop…

Number Theory · Mathematics 2025-04-15 Takafumi Miyazaki , István Pink

In this paper we have investigated some old issues concerning four color map problem. We have given a general method for constructing counter-examples to Kempe's proof of the four color theorem and then show that all counterexamples can be…

Combinatorics · Mathematics 2015-05-13 I. Cahit
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