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Mathematics, Volume 13, Issue 14

July-2 2025 - 107 articles

Cover Story: Here, we describe the use of confluent Darboux transformations for Schrödinger operators, and how they give rise to explicit Wronskian formulae for certain algebraic solutions of Painlevé equations. As a preliminary illustration, we briefly describe how the Yablonskii–Vorob’ev polynomials arise in this way, thus providing well-known expressions for the tau functions of the rational solutions of the Painlevé II equation. We then proceed to apply the method to obtain the main result, namely, a new Wronskian representation for the Ohyama polynomials, which correspond to the algebraic solutions of the Painlevé III equation of type D7View this paper
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Articles (107)

  • Feature Paper
  • Article
  • Open Access
1,417 Views
21 Pages

18 July 2025

This paper introduces a novel adversarial learning framework for reconstructing hidden layers in historical palimpsests. Recovering text hidden in historical palimpsests is complicated by various artifacts, such as ink diffusion, degradation of the w...

  • Article
  • Open Access
1 Citations
1,068 Views
23 Pages

Robust Small-Object Detection in Aerial Surveillance via Integrated Multi-Scale Probabilistic Framework

  • Youyou Li,
  • Yuxiang Fang,
  • Shixiong Zhou,
  • Yicheng Zhang and
  • Nuno Antunes Ribeiro

18 July 2025

Accurate and efficient object detection is essential for aerial airport surveillance, playing a critical role in aviation safety and the advancement of autonomous operations. Although recent deep learning approaches have achieved notable progress, si...

  • Article
  • Open Access
472 Views
15 Pages

18 July 2025

The digital economy presents multiple challenges to the promotion of green technologies, including behavioral uncertainty among firms, heterogeneous technological choices, and disparities in policy incentive strength. This study develops a tripartite...

  • Article
  • Open Access
578 Views
18 Pages

18 July 2025

In the present paper, we present certain geometric properties, such as starlikeness, convexity of order η(0≤η<1), and close-to-convexity, in an open unit disk of the normalized form of Ramanujan-type entire functions. As a consequence,...

  • Article
  • Open Access
2 Citations
1,415 Views
29 Pages

A Hybrid GAS-ATT-LSTM Architecture for Predicting Non-Stationary Financial Time Series

  • Kevin Astudillo,
  • Miguel Flores,
  • Mateo Soliz,
  • Guillermo Ferreira and
  • José Varela-Aldás

18 July 2025

This study proposes a hybrid approach to analyze and forecast non-stationary financial time series by combining statistical models with deep neural networks. A model is introduced that integrates three key components: the Generalized Autoregressive S...

  • Article
  • Open Access
707 Views
32 Pages

17 July 2025

Massive relief supplies inter-regional lateral transshipment (MRSIRLT) can significantly enhance the efficiency of disaster response, meet the needs of affected areas (AAs), and reduce deprivation costs. This paper develops an integrated allocation a...

  • Article
  • Open Access
1,036 Views
22 Pages

17 July 2025

This paper addresses a fundamental challenge in statistical radar detection systems: optimizing the trade-off between the probability of a false alarm (PFA) and the probability of a miss (PM). These two metrics are inversely related and critical for...

  • Article
  • Open Access
454 Views
12 Pages

17 July 2025

In this short note, we focus on complete translating solitons with a bounded Lfn-norm of the second fundamental form and obtain two results. First, based on a Sobolev-type inequality and a Simons-type inequality, we establish a rigidity theorem of co...

  • Article
  • Open Access
1,269 Views
40 Pages

17 July 2025

This paper presents a comparative analysis between classical maximum flow algorithms and modern deep Reinforcement Learning (RL) algorithms applied to traffic optimization in urban environments. Through SUMO simulations and statistical tests, algorit...

  • Feature Paper
  • Article
  • Open Access
1 Citations
426 Views
15 Pages

17 July 2025

Hilbert proved in 1888 that a positive semi-definite (PSD) homogeneous quartic polynomial of three variables always can be expressed as the sum of squares (SOS) of three quadratic polynomials, and a psd homogeneous quartic polynomial of four variable...

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Mathematics - ISSN 2227-7390