Results 61 to 70 of about 537 (169)
The modular automorphisms of quotient modular curves
Mathematika, Volume 72, Issue 1, January 2026.Abstract We obtain the modular automorphism group of any quotient modular curve of level N$N$, with 4,9∤N$4,9\nmid N$. In particular, we obtain some unexpected automorphisms of order 3 that appear for the quotient modular curves when the Atkin–Lehner involution w25$w_{25}$ belongs to the quotient modular group. We also prove that such automorphisms are
Francesc Bars, Tarun Dalal
wiley +1 more source
International Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.This work introduces a multiagent deep reinforcement learning (MADRL) framework for energy harvesting (EH) in unmanned aerial vehicle (UAV) networks aided by reconfigurable intelligent surfaces (RIS). The core goal is to maximize quantities of harvested energy subject to quality of service (QoS) constraints in dynamic wireless setups.
Syed Mohsin Bokhari +5 more
wiley +1 more source
Stabilizing massless fields with fluxes in Landau-Ginzburg models
Journal of High Energy PhysicsRecent work on flux compactifications suggests that the tadpole constraint generically allows only a limited number of complex structure moduli to become massive, i.e., be stabilized at quadratic order in the spacetime superpotential.
Katrin Becker +4 more
doaj +1 more source
On the emergence of the Quanta Prime sequence
Arab Journal of Basic and Applied SciencesThis paper presents the Quanta Prime Sequence (QPS) and its foundational theorem, showcasing a unique class of polynomials with substantial implications.
Moustafa Ibrahim
doaj +1 more source
Beyond Expansion IV: Traces of Thin Semigroups
Discrete Analysis, 2018 Beyond Expansion IV: Traces of Thin Semigroups, Discrete Analysis 2018:6, 27 pp. This is the fourth in a series of papers by Bourgain and Kontorovich that study the arithmetic properties of groups and semigroups of 2-by-2 integer matrices.
Jean Bourgain, Alex Kontorovich
doaj +1 more source
Deriving Binomial Convolution Formulas for Horadam Sequences via Context-Free Grammars
AxiomsThe Horadam sequence Hn(a,b;p,q) unifies a number of well-known sequences, such as Fibonacci and Lucas sequences. We use the context-free grammars as a new tool to study Horadam sequences.
Jun-Ying Liu +3 more
doaj +1 more source
JEŚMANOWICZ' CONJECTURE WITH FERMAT NUMBERS
Taiwanese Journal of Mathematics, 2014 Let $a,b,c$ be relatively prime positive integers such that $a^{2}+b^{2}=c^{2}.$ In 1956, Je\'{s}manowicz conjectured that for any positive integer $n$, the only solution of $(an)^{x}+(bn)^{y}=(cn)^{z}$ in positive integers is $(x,y,z)=(2,2,2)$. Let $k\geq 1$ be an integer and $F_k=2^{2^k}+1$ be $k$-th Fermat number.
Tang, Min, Weng, Jian-Xin
openaire +2 more sources
Producing focused extreme ultraviolet vortex with Fermat-spiral photon sieves
PhotoniXExtreme ultraviolet (EUV) light is difficult to focus due to strong absorption of most materials. Photon sieves (PS), rather than Fresnel zone plates (FZP), can focus EUV to smaller spot and suppress the higher orders of secondary maxima by several ...
Junyong Zhang +7 more
doaj +1 more source
Coverings of solenoids and automorphisms of semigroup C*-algebras
Учёные записки Казанского университета: Серия Физико-математические науки, 2018 The paper deals with finite-sheeted covering mappings onto the C*-adic solenoids and limit endomorphisms of semigroup C*-algebras. The aim of our exposition is two-fold: firstly, to present the results concerning the above-mentioned mappings and ...
R.N. Gumerov
doaj
Note on Fermat’s numbers [PDF]
Bulletin of the American Mathematical Society, 1909 Morehead, J. C., Western, A. E.
openaire +2 more sources