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We improve the best lower bounds on the chromatic number of Euclidean space in small dimensions. The new results depend on extensive computations in Sage.

Combinatorics · Mathematics 2014-09-05 Matthew Kahle , Birra Taha

This article introduces a new approach to discrete curvature based on the concept of effective resistances. We propose a curvature on the nodes and links of a graph and present the evidence for their interpretation as a curvature. Notably,…

Differential Geometry · Mathematics 2022-09-26 Karel Devriendt , Renaud Lambiotte

Let F be a finite field and G=GL(6,F). In this paper, we explicitly describe a certain twisted Jacquet module of an irreducible cuspidal representation of G.

Representation Theory · Mathematics 2022-06-07 Kumar Balasubramanian , Himanshi Khurana

We provide new forbidden criterion for realizability of smooth tropical plane curves. This in turn provides us a complete classification of smooth tropical plane curves up to genus six.

Combinatorics · Mathematics 2022-03-07 Ayush Kumar Tewari

We prove several structural properties of Steiner triple systems (STS) of order 3w+3 that include one or more transversal subdesigns TD(3,w). Using an exhaustive search, we find that there are 2004720 isomorphism classes of STS(21)…

Combinatorics · Mathematics 2020-06-23 Yue Guan , Minjia Shi , Denis S. Krotov

A Euclidean $t$-design, as introduced by Neumaier and Seidel (1988), is a finite set ${\cal X} \subset \mathbb{R}^n$ with a weight function $w: {\cal X} \rightarrow \mathbb{R}^+$ for which $$\sum_{r \in R} W_r \overline{f}_{S_{r}} =…

Combinatorics · Mathematics 2015-12-10 Béla Bajnok

We present an new system of ordinary differential equations with affine Weyl group symmetry of type E_6^{(1)}. This system is expressed as a Hamiltonian system of sixth order with a coupled Painleve VI Hamiltonian.

Mathematical Physics · Physics 2007-05-23 Kenta Fuji , Takao Suzuki

In this paper, we study spherical $T$-designs and their harmonic strength $\text{Hst}(X)$ on the unit circle $S^1$. For any finite set $T\subset\mathbb{N}$, we constructively demonstrate the existence of a finite design $X$ such that…

Combinatorics · Mathematics 2025-05-13 Ryutaro Misawa , Yusaku Nishimura

We show how recent exact results in supersymmetric theories can be extended to models which include {\it explicit} soft supersymmetry breaking terms. We thus derive new exact results for non-supersymmetric models.

High Energy Physics - Theory · Physics 2009-10-28 Nick Evans , Stephen D. H. Hsu , Myckola Schwetz

We classify the possible torsion structures of rational elliptic curves over sextic number fields.

Number Theory · Mathematics 2019-10-07 Tomislav Gužvić

We re-derive the R symmetries for the Z6-II orbifold with non-trivial Wilson lines and find expressions for the R charges which differ from those in the literature.

High Energy Physics - Theory · Physics 2015-06-16 Hans Peter Nilles , Saul Ramos-Sanchez , Michael Ratz , Patrick K. S. Vaudrevange

We give a new proof of the existence of designs, which is much shorter and gives better bounds.

Combinatorics · Mathematics 2024-11-28 Peter Keevash

A five dimensional $SU(6)$ grand gauge-Higgs unification compactified on $S^1/Z_2$ is discussed. We propose new sets of the $SU(6)$ representations where the quarks and leptons in one generation are embedded and there is no extra massless…

High Energy Physics - Phenomenology · Physics 2024-05-14 Nobuhito Maru , Ryujiro Nago

We obtain some new inequalities of Chebyshev Type.

Numerical Analysis · Mathematics 2016-10-03 Andriy L. Shidlich , Stanislav O. Chaichenko

We prove elegant trilinear formulas connecting products of volumes of Euclidean tetrahedra with vertices taken from a given set of 6 points. We propose a way for generalizing those formulas.

Metric Geometry · Mathematics 2007-05-23 E. V. Martyushev

We present alternative postulates for Euclidean geometry whose merit is that they lead to a new class of invariants and associated geometries for real finite-dimensional unital associative algebras.

Rings and Algebras · Mathematics 2025-09-11 Fred Greensite

The proof of Dey's new k-set bound is illustrated.

Computational Geometry · Computer Science 2007-05-23 Joseph O'Rourke

We extend our previous work by building a smooth complete manifold $(M^6,g,p)$ with $\mathrm{Ric}\geq 0$ and whose fundamental group $\pi_1(M^6)=\mathbb{Q}/\mathbb{Z}$ is infinitely generated. The example is built with a variety of…

Differential Geometry · Mathematics 2025-09-24 Elia Bruè , Aaron Naber , Daniele Semola

We study the examples mentioned in [2,Tables A & C] and establish the arithmeticity of four examples of symplectic hypergeometric groups of degree six. Following [2] we know that there are 458 inequivalent symplectic hypergeometric groups…

Group Theory · Mathematics 2022-03-11 Jitendra Bajpai

The quintuple product identity are deduced from a new semi-finite form, which are obtained from the very-well-poised $_6\phi_5$ series.

Combinatorics · Mathematics 2021-07-27 Jun-Ming Zhu