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A review is given of the theoretical ideas concerning the mysterious pentaquark baryons proposed during the first year after its discovery. We focus on the difficulties involved with the constituent quark models and the discrepancy between…

High Energy Physics - Phenomenology · Physics 2009-11-10 Makoto Oka

We develop a systematic method for computing the angle combinations at all vertices in an edge-to-edge tiling of the sphere by pentagons with the same five angles. The method is a useful and necessary step in many tiling problems about…

Metric Geometry · Mathematics 2023-09-27 Hoi Ping Luk , Min Yan

In the paper based on the question of Zhang and L\"{u}[15], we present one theorem which will improve and extend the results of Banerjee-Majumder [2] and a recent result of Li-Huang [9].

Complex Variables · Mathematics 2022-09-15 Abhijit Banerjee , Bikash Chakraborty

Covering space theory is used to construct new examples of buildings.

Group Theory · Mathematics 2014-07-24 Michael W. Davis

Some idea, which leads to a non-trivial solution of the quantum four-simplex equation, is exposed in this paper. We call this idea "pentagonal algebra". Few examples of the realisation of this idea are given here, and thus few examples of…

Mathematical Physics · Physics 2024-07-29 Sergey Sergeev

We construct a new type of geometric knot theory, plumbers' knots, and solve the problems of distinguishing and enumerating such knots at a fixed level of complexity. (v2) Minor edits, added theorem 3.18. (v3) Substantial revisions,…

Algebraic Topology · Mathematics 2015-02-25 Chad Giusti

Given a planar pentagon, construct two new pentagons: the vertices of the first one are the intersection points of the diagonals of the original pentagon, and the vertices of the second one are the tangency points of the conic inscribed in…

Metric Geometry · Mathematics 2017-07-31 Serge Tabachnikov

After reviewing the basics, topics in this talk include an attempted survey of theoretical contributions to this workshop, some extra specific comments on quark models, and a summary.

High Energy Physics - Phenomenology · Physics 2017-08-23 Carl E. Carlson

In this paper, we show the new fixed point theorem in metric spaces. Furthermore, for this fixed point theorem, we apply to the Collatz conjecture.

General Mathematics · Mathematics 2025-03-10 Toshiharu Kawasaki

Steffen's polyhedron was believed to have the least number of vertices among polyhedra that can flex without self-intersections. Maksimov clarified that the pentagonal bipyramid with one face subdivided into three is the only polyhedron…

Metric Geometry · Mathematics 2024-10-18 Matteo Gallet , Georg Grasegger , Jan Legerský , Josef Schicho

We introduce and study properties of certain new harmonic function spaces on products of upper half-spaces.Norm estimates for the so-called expanded Bergman projections are obtained.Sharp theorems on multipliers acting on certain Sobolev…

Functional Analysis · Mathematics 2012-01-18 Milos Arsenovic , Romi F. Shamoyan

Recent results on searches for new phenomena on the Tevatron and HERA colliders are reviewed.

High Energy Physics - Experiment · Physics 2010-04-22 Elemer Nagy

We obtain a new differentiable sphere theorem for compact Lagrangian submanifolds in complex Euclidean space and complex projective space.

Differential Geometry · Mathematics 2011-09-08 Haizhong Li , Xianfeng Wang

We establish coupled fixed point theorems for contraction involving rational expressions in partially ordered metric spaces.

General Topology · Mathematics 2010-05-19 Bessem Samet , Habib Yazidi

We prove some extension theorems involving uniformly continuous maps of the universal Urysohn space. We also prove reconstruction theorems for certain groups of autohomeomorphisms of this space and of its open subsets.

Metric Geometry · Mathematics 2012-10-23 Wieslaw Kubiś , Matatyahu Rubin

We give a counterexample to a recently conjectured variant of the Penrose inequality.

Differential Geometry · Mathematics 2026-04-30 Sven Hirsch , Yipeng Wang

Concerning new physics beyond the Standard Model we explore the discovery and analysis potentials of polarized (hadronic) experiments and we compare with the unpolarized case. For discovery, beam polarization is helpful in the case of…

High Energy Physics - Phenomenology · Physics 2009-11-07 P. Taxil , J. -M. Virey

Current problems in particle physics are reviewed from the viewpoint of theories possessing extra spatial dimensions.

High Energy Physics - Phenomenology · Physics 2011-09-13 Ferruccio Feruglio

We introduce a new criterion which if satisfied implies the Riemann hypothesis.

General Mathematics · Mathematics 2011-07-27 Roupam Ghosh

The novel concept of quantum logical entropy is presented and analyzed. We prove several basic properties of this entropy with regard to density matrices. We hereby motivate a different approach for the assignment of quantum entropy to…

Quantum Physics · Physics 2017-11-27 Boaz Tamir , Eliahu Cohen