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Supersymmetry in the gauge sector could be realized as N=1 or N=2 Supersymmetry, but the current LHC searches assume an N=1 realization. In this paper we show that squarks could be as light as few hundreds of GeV for N=2. We also describe…

High Energy Physics - Phenomenology · Physics 2015-06-03 Matti Heikinheimo , Moshe Kellerstein , Veronica Sanz

In this paper, we prove that for any $1/2<t<1$, there exists a positive integer $N_{0}$ depending on $t$ such that for any $n_{0}\geq N_{0}$, squares of sidelength $f(n)^{-t}$ for $n\geq n_{0}$ can be packed with disjoint interiors into a…

Metric Geometry · Mathematics 2022-10-20 Keiju Sono

A square is a factor $S = (S_1; S_2)$ where $S_1$ and $S_2$ have the same pattern, and a permutation is said to be square-free if it contains no non-trivial squares. The permutation is further said to be bicrucial if every extension to the…

Combinatorics · Mathematics 2022-01-31 Carla Groenland , Tom Johnston

In this paper we consider the problem of finding pairs of triangles whose sides are perfect squares of integers, and which have a common perimeter and common area. We find two such pairs of triangles, and prove that there exist infinitely…

Number Theory · Mathematics 2021-04-14 Ajai Choudhry , Arman Shamsi Zargar

We prove that every concatenation of $10$ or more binary squares contains an overlap. The bound $10$ is best possible. In contrast, over a ternary alphabet, there are infinitely long overlap-free words that consist of a concatenation of…

Combinatorics · Mathematics 2026-05-28 Jeffrey Shallit

In this paper we continue our study, begun in part I, of the exceptional set of integers, not restricted by elementary congruence conditions, which cannot be represented as sums of three or four squares of primes. We correct a serious…

Number Theory · Mathematics 2010-08-23 Glyn Harman , Angel Kumchev

A matching $M$ in a graph $G$ is uniquely restricted if no other matching in $G$ covers the same set of vertices. We prove that any connected subcubic graph with $n$ vertices and girth at least $5$ contains a uniquely restricted matching of…

Combinatorics · Mathematics 2018-10-11 Maximilian Fürst , Dieter Rautenbach

We prove that one can cover the $1 \times b$ rectangle by equal squares on both sides in one layer iff $b = p \pm \sqrt{p^2 - r^2} $, where $p \ge r \ge 0$ and $p,q \in \mathbb{Q}$.

Combinatorics · Mathematics 2020-09-17 Fedor Ozhegov

A square is a word of the form $xx$ for a non-empty word $x$. Brlek and Li [Comb. Theory, 2025] proved that the number of distinct squares in a word $w$ of length $n$ is at most $n - \sigma$, where $\sigma$ is the number of letters used in…

Discrete Mathematics · Computer Science 2026-03-03 Eitatsu Tomita , Tomohiro I

This paper is concerned with the problem of finding $n$ distinct squares such that, on excluding any one of them, the sum of the remaining $n-1$ squares is a square. While parametric solutions are known when $n=3$ and $n=4$, when $n > 4$,…

Number Theory · Mathematics 2025-05-06 Ajai Choudhry

In this paper, we study how small a box contains at least two points from a modular cubic polynomial $y \equiv a x^3 + b x^2 + c x + d \pmod p$ with $(a, p) = 1$. We prove that some square of side length $p^{1/6 + \epsilon}$ contains two…

Number Theory · Mathematics 2015-10-07 Tsz Ho Chan

We consider words $w$ over the alphabet $\Sigma=\{0,1,2\}$. It is shown that there are irreducibly square-free words of all lengths $n$ except 4,5,7 and 12. Such a word is square-free (i.e., it has no repetitions $uu$ as factors), but by…

Combinatorics · Mathematics 2020-07-06 Tero Harju

In this paper, it is proved that every sufficiently large even integer can be represented as the sum of two squares of primes, two cubes of primes, two biquadrates of primes and 16 powers of 2. Furthermore, there are at least 5.313% odd…

Number Theory · Mathematics 2024-01-04 Yuhui Liu

We explore variants of the following open question: Split $[0,1]^2$ into $N^2$ squares with side length $1/N$. Is there a way to select $N$ such squares such that each line intersects only $O(1)$ of them?

Combinatorics · Mathematics 2024-06-25 Ciprian Demeter , Ruixiang Zhang

The present paper aims to solve some problems proposed by Lassak about the reduced spherical polygons. The main result is to show that the regular spherical n-gon has the minimal perimeter among all reduced spherical polygons of fixed…

Metric Geometry · Mathematics 2022-04-14 Cen Liu , Yanxun Chang

Given a matrix $M = (a_{i,j})$ a square is a $2 \times 2$ submatrix with entries $a_{i,j}$, $a_{i, j+s}$, $a_{i+s, j}$, $a_{i+s, j +s}$ for some $s \geq 1$, and a zero-sum square is a square where the entries sum to $0$. Recently,…

Combinatorics · Mathematics 2023-05-18 Tom Johnston

A partial cube is a graph having an isometric embedding in a hypercube. Partial cubes are characterized by a natural equivalence relation on the edges, whose classes are called zones. The number of zones determines the minimal dimension of…

Discrete Mathematics · Computer Science 2013-12-11 Jean Cardinal , Stefan Felsner

In the present popular science paper we determine when a square can be dissected into rectangles similar to a given rectangle. The approach to the question is based on a physical interpretation using electrical networks. Only secondary…

History and Overview · Mathematics 2018-08-14 Sergey Dorichenko , Mikhail Skopenkov

Magic squares are well-known arrangements of integers with common row, column, and diagonal sums. Various other magic shapes have been proposed, but triangles have been somewhat overlooked. We introduce certain triangular arrangements of…

General Mathematics · Mathematics 2022-08-29 Gabriel Hale , Bjorn Vogen , Matthew Wright

A string $s$ is called a parameterized square when $s = xy$ for strings $x$, $y$ and $x$ and $y$ are parameterized equivalent. Kociumaka et al. showed the number of parameterized squares, which are non-equivalent in parameterized…

Data Structures and Algorithms · Computer Science 2024-08-12 Rikuya Hamai , Kazushi Taketsugu , Yuto Nakashima , Shunsuke Inenaga , Hideo Bannai