Results 31 to 40 of about 554 (122)

Massive Spanning Forests on the Complete Graph: Exact Distribution and Local Limit

open access: yesRandom Structures &Algorithms, Volume 68, Issue 2, March 2026.
ABSTRACT We provide new exact formulas for the distribution of massive spanning forests on the complete graph, which give also a new outlook on the celebrated special case of the uniform spanning tree. As a corollary we identify their local limit. This generalizes a well‐known theorem of Grimmett on the local limit of uniform spanning trees on the ...
Matteo D'Achille   +2 more
wiley   +1 more source

As generalizações das formas matriciais e dos quatérnios da sequência de Mersenne

open access: yes, 2021
Neste trabalho serão investigadas as matrizes geradoras da sequência de Mersenne com índices correspondentes aos inteiros positivos, bem como a generalização de sua forma matricial de ordem 2 x 2 e será realizada a extensão para as matrizes com índices ...
Francisco Régis Vieira Alves   +3 more
core  

Sequência matricial (s1,s2,s3)-Tridovan: aspectos históricos e propriedades

open access: yesCQD Revista Eletrônica Paulista de Matemática, 2019
Neste trabalho é introduzida uma nova definição da sequência matricial (s1,s2,s3)-Tridovan. Ao longo do texto é desenvolvido um breve estudo sobre sequências lineares e recursivas, a fim de avançarmos nos estudos deste trabalho, bem como nos assegurarmos
Renata Passos Machado Vieira   +2 more
doaj  

On moments of the derivative of CUE characteristic polynomials and the Riemann zeta function

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We study the derivative of the characteristic polynomial of N×N$N \times N$ Haar‐distributed unitary matrices. We obtain new explicit formulae for complex‐valued moments when the spectral variable is inside the unit disc, in the limit N→∞$N \rightarrow \infty$.
Nicholas Simm, Fei Wei
wiley   +1 more source

The Romantic Discovery of Radiolaria in the Ocean

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 1, January/February 2026.
ABSTRACT Radiolaria are unicellular marine organisms (protists) that have been drifting in oceanic plankton for hundreds of millions of years. These mineral architects can build extraordinarily complex skeletons, which fascinated and puzzled naturalists observing water samples through rudimentary microscopes.
Johan Decelle
wiley   +1 more source

Dual Proximal Groups Concisely Representing Complex Hosoya Triangles

open access: yesAdvances in Mathematical Physics, Volume 2026, Issue 1, 2026.
This paper introduces dual proximal groups (DPGs) that provide concise representation of complex Hosoya triangles (CHTs). An application is given in terms of the DPG representation of collections of Hosoya‐Hilbert circular triangles on modulated motion waveforms in sequences of video frames. MSC2020 Classification: 11B39,54E05,57S25.
Kübra Gül   +3 more
wiley   +1 more source

A Generalization of Gaussian Balancing and Gaussian Balancing‐Lucas Numbers With Applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
In this paper, we study a generalization of Gaussian balancing and Gaussian Lucas‐balancing numbers, we find their generating functions, Binet formulas, related matrix representation, and many other properties. Also, we provide some applications in cryptography.
T. Al-Asoully   +2 more
wiley   +1 more source

Chaotic Archerfish Optimizer–Enhanced Double‐Attention Dense BiGRU for Video‐Based Facial Expression Recognition

open access: yesInternational Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.
Facial expression recognition (FER) is a growing and important area of pattern recognition research. In today’s application domains, such as the identification of human facial expression, deep learning techniques have gained popularity. The expressions on people’s faces reveal their motives and emotional actions.
R. Punithavathi   +4 more
wiley   +1 more source

Kproblema

open access: yes, 2021
El Paskín Matemático es una producción del Programa de Matemáticas de la Fundación Universitaria Konrad Lorenz, abierto a todas las personas, que tiene el propósito de acercar al conocimiento matemático de manera amena y rigurosa.Este artículo explora la
Arredondo García, John Alexander
core  

Model Reduction for Nonlinear Dynamical Systems With Parametrized Boundary and Initial Conditions Using Support Vector Machine on a Manifold

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
This work introduces a model reduction approach for parametrized boundary and initial conditions using supervised learning techniques. The Grassmann distance is employed to measure differences between parameter values based on the angles of solution subspaces.
Norapon Sukuntee   +2 more
wiley   +1 more source

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