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Geometric methods

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lightbulbAbout this topic
Geometric methods refer to mathematical techniques that utilize geometric concepts and structures to solve problems in various fields, including physics, computer science, and engineering. These methods often involve the study of shapes, spatial relationships, and transformations, enabling the analysis and interpretation of complex systems through visual and spatial reasoning.
lightbulbAbout this topic
Geometric methods refer to mathematical techniques that utilize geometric concepts and structures to solve problems in various fields, including physics, computer science, and engineering. These methods often involve the study of shapes, spatial relationships, and transformations, enabling the analysis and interpretation of complex systems through visual and spatial reasoning.

Key research themes

1. How do geometric algebra frameworks enhance problem-solving and computational efficiency in geometry and robotics?

This theme investigates the application of geometric algebra (GA) as a unifying mathematical language for geometry-related computations, highlighting its capacity to represent rotations, reflections, and other geometric transformations in a more compact and computationally efficient manner than traditional matrix operations. The theme also explores GA’s utility in robotics for solving kinematic constraints and improving algorithms in various engineering and computer science problems.

Key finding: This paper presents a detailed application of geometric algebra to solve classical geometry problems involving rotations and reflections, demonstrating that GA enables recognition and manipulation of geometric transformations... Read more
Key finding: The work shows how GA, integrating traditional mathematical tools such as matrix algebra and quaternions, provides a compact and efficient representation of geometric transformations, particularly rotations, reducing... Read more
Key finding: This article demonstrates that despite GA’s complexity and historical underuse in engineering, its capability to unify various mathematical tools offers advantages in describing and solving engineering problems involving... Read more
Key finding: This research focuses on developing efficient algorithms for solving kinematic constraints of arbitrary robotic architectures by using geometric methods, addressing strongly NP-hard problems. It highlights the importance of... Read more

2. What role do projective and measurement systems play in the accurate modeling and representation of geometric objects in 2D and 3D?

This area focuses on foundational geometric frameworks—projective geometry and systems of measurement—that facilitate the transition from three-dimensional physical objects to their two-dimensional representations and vice versa. It includes analysis of coordinate systems, projection planes, camera parameters in computer vision, and standards of measurement which are critical to coherent interpretation and reconstruction of geometric objects in engineering and design.

Key finding: Defines and compares major systems of measurement (e.g., American vs European) used in geometrical modeling, exposing how the orientation and arrangement of projection planes (frontal, horizontal, profile) and coordinate axes... Read more
Key finding: This chapter elucidates the use of projective geometry in reconstructing 3D points, lines, and planes from multiple images, emphasizing camera calibration, locations, orientations, and epipolar geometry fundamentals. It... Read more
Key finding: Demonstrates that GeoGebra’s dynamic software enhances students’ spatial visualization of 3D geometry by providing interactive 2D and 3D graphical representations, helping overcome traditional difficulties in understanding... Read more

3. How can mathematical modeling and computational algorithms reveal and optimize geometric structures and shape properties?

This theme addresses analytical and computational approaches to uncovering, modeling, and optimizing the intrinsic and extrinsic properties of geometric shapes, including shape optimization techniques, parametric modeling for design, geometric interpretations of natural forms, and mathematical characterization of structure deformations. It integrates shape calculus, mathematical language for surveying, and parametric methods to translate ideal geometric forms into practical, optimized digital and physical models.

Key finding: Reviews shape optimization within geometric analysis, focusing on gradient flows of objective functions and smooth perturbations of geometrical domains. It presents model problems in two dimensions that illustrate methods for... Read more
Key finding: Develops a computational methodology to translate five regular convex polyhedra (Platonic solids) into digital parametric models and physical prototypes via 3D printing. The work bridges abstract geometric theory and... Read more
Key finding: Applies mathematical algorithms computationally (e.g., in Wolfram Mathematica) on digital survey data to analyze and interpret architectural shapes, detecting global and subtle local deformations. The methodology reconstructs... Read more
Key finding: Constructs a continuous family of geometries with constant curvature parametrized to transition coherently between hyperbolic, Euclidean, and spherical geometries. This framework analytically traces the continuous deformation... Read more

All papers in Geometric methods

We construct an explicit self-adjoint operator A∞ on a suitable Hilbert space \(H = L^2((0, ∞), dx), whose spectrum corresponds exactly to the imaginary parts γn of the nontrivial zeros of the Riemann zeta function. The operator takes the... more
This paper proposes a revolutionary unified game theory framework that integrates the three-solution decision system (Maximal Solution, Optimal Solution, Benevolent Solution), PanBoard cross-board universal algorithm, MWC→ES mapping... more
The Prime Number Theorem tells us π(N) ∼ N / ln(N), but rarely provides systematic explanations for why prime density necessarily tends to zero. This paper proposes five mathematical principles of prime rarefaction: the Multiplicative... more
Based on the theoretical framework of "Mathematical Relativity," this paper reveals a fundamental geometric characteristic of prime distribution: under logarithmic coordinate systems, the growth of cumulative prime averages exhibits a... more
The Recursive Inflationary Fractal Time (RIFT) framework unifies number theory, fractal geometry, and quantum gravity through the handling of divergent infinite prime products and analytic continuation. Utilizing adelic integration, zeta... more
Se estudia la relación de los códigos correctores con los sistemas esteganográficos, y proporciona un método de fabricación de estos a partir de aquellos.
his paper presents a reduction of Riemann's functional equation to a Riemann-Hilbert boundary value problem. The integral Hilbert transforms, which emerge in solving this problem, facilitate the computation of precise lower bounds for the... more
This paper studies the Schrödinger operator with Morse potential V k (u) = 1 4 e 2u + ke u on a right half-line [u 0 , ∞), and determines the Weyl asymptotics of eigenvalues for constant boundary conditions at the endpoint u 0. In... more
The Riemann hypothesis is an unproven statement referring to the zeros of the Riemann zeta function. Bernhard Riemann calculated the first six non-trivial zeros of the function and observed that they were all on the same straight line. In... more
The Riemann's hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn=1/2+iλn. Earlier work on the RH based on supersymmetric QM, whose potential was related to the Gauss–Jacobi theta series,... more
The Riemann hypothesis, stating that all nontrivial zeros of the Riemann zeta function have real parts equal to 1/2, is one of the most important conjectures in mathematics. In this paper we prove the Riemann hypothesis by adding an extra... more
In the paper the Riemann's functional equation reduced to a Riemann-Hilbert boundary value problem, and the integral Hilbert transforms arising in its solution allow the calculation of an exact lower bounds for the zeta function.
The possible connection of Riemann's Hypothesis on the non trivial zeroes of the zeta function [(z) with the theory of dynamical systems, both quantum and classical, is discussed. The conjecture of the existence of an underlying... more
We present a brief review of the spectral approach to the Riemann hypothesis, according to which the imaginary part of the non trivial zeros of the zeta function are the the eigenvalues of the Hamiltonian of a quantum mechanical system.
The number N (E) of complex zeros of the Riemann zeta function with positive imaginary part less than E is the sum of a 'smooth' functionN (E) and a 'fluctuation'. Berry and Keating have shown that the asymptotic expansion ofN (E) counts... more
The Riemann's hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn = 1/2 + iλn. By constructing a continuous family of scaling-like operators involving the Gauss–Jacobi theta series and by... more
The Riemann’s hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn =1/2 +iλn. Earlier work on the RH based on supersymmetric QM, whose potential was related to the Gauss-Jacobi theta series,... more
A proof of the Riemann’s hypothesis (RH) about the non-trivial zeros of the Riemann zeta-function is presented. It is based on the construction of an infinite family of operators D (k,l) in one dimension, and their respective... more
This paper outlines further properties concerning the fractional derivative of the Riemann ζ function. The functional equation, computed by the introduction of the Grünwald-Letnikov fractional derivative, is rewritten in a simplified form... more
In the quantum adelic field (string) theory models, vacuum energy -- cosmological constant vanish. The other (alternative ?) mechanism is given by supersymmetric theories. Some observations on prime numbers, zeta -- function and fine... more
A great deal of research has been and still is being devoted to the zeros of the Riemann Zeta function (RZF) that are in the critical strip and known as the nontrivial zeros of RZF. The Riemann Hypothesis (RH) states that these zeros are... more
We present, using spectral analysis, a possible way to prove the Riemann's hypothesis (RH) that the only zeroes of the Riemann zeta-function are of the form s=1/2+i\lambda_n. A supersymmetric quantum mechanical model is proposed as an... more
During the last three decades, the problem of evaluation of the determinants of the Laplacians on Riemann manifolds has received considerable attention by many authors. The functional determinant for the n-dimensional sphere S n with the... more
During the last three decades, the problem of evaluation of the determinants of the Laplacians on Riemann manifolds has received considerable attention by many authors. The functional determinant for the n-dimensional sphere S n with the... more
In this paper, fractal calculus, which is called Fα-calculus, is reviewed. Fractal calculus is implemented on fractal interpolation functions and Weierstrass functions, which may be non-differentiable and non-integrable in the sense of... more
A proof of the Riemann's hypothesis (RH) about the non-trivial zeros of the Riemann zeta-function is presented. It is based on the construction of an infinite family of operators D(k,l) in one dimension, and their respec-tive... more
Berry and Keating conjectured that the classical Hamiltonian H = xp is related to the Riemann zeros. A regularization of this model yields semiclassical energies that behave, in average, as the non trivial zeros of the Riemann zeta... more
In this note we discuss explicitly the structure of some simple setsof values on the critical line (the rivial critical values") which are associatedwith the mean staircases emerging from the Zeta function. They are givenas solutions... more
We investigate the spectral zeta function of a self-similar Sturm-Liouville operator associated with a fractal self-similar measure on the half-line and C. Sabot's work connecting the spectrum of this operator with the iteration of a... more
We study generalised prime systems P (1 < p 1 ≤ p 2 ≤ • • • , with p j ∈ R tending to infinity) and the associated Beurling zeta function ζ P (s) = ∞ j=1 (1 − p −s j) −1. Under appropriate assumptions, we establish various analytic... more
We propose a new way of studying the Riemann zeros on the critical line using ideas from supersymmetry. Namely, we construct a supersymmetric quantum mechanical model whose energy eigenvalues correspond to the Riemann zeta function in the... more
In the quantum adelic field (string) theory models, vacuum energy -- cosmological constant vanish. The other (alternative ?) mechanism is given by supersymmetric theories. Some observations on prime numbers, zeta -- function and fine... more
We comment on some apparently weak points in the novel strategies recently developed by various authors aiming at a proof of the Riemann hypothesis. After noting the existence of relevant previous papers where similar tools have been... more
An ensemble of 2×2 pseudo-Hermitian random matrices is constructed that possesses real eigenvalues with level-spacing distribution exactly as for the Gaussian unitary ensemble found by Wigner. By a re-interpretation of Connes&#39;... more
The distribution of prime numbers is directly related to the statistical distribution of the nontrivial zeros of the Riemann Zeta function that closely resembles that of energy levels of atomic nuclei. Moreover, Riemann Zeta function... more
The Riemann&#39;s hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn=1/2+iλn. Earlier work on the RH based on supersymmetric QM, whose potential was related to the Gauss–Jacobi theta series,... more
We comment on some apparently weak points in the novel strategies recently developed by various authors aiming at a proof of the Riemann hypothesis. After noting the existence of relevant previous papers where similar tools have been... more
The distribution of prime numbers is directly related to the statistical distribution of the nontrivial zeros of the Riemann Zeta function that closely resembles that of energy levels of atomic nuclei. Moreover, Riemann Zeta function... more
No. 1364 Berlin 2008 2000 Mathematics Subject Classification. 65C05, 65C20, 76S05 PACS: 98.80.Jk, 95.75.Pq, 98.65.Dx .
 ABSTRACT: We review the Wu-Sprung potential adding a correction involving a fractional derivative of Riemann Zeta function, we study a global semiclassical analysis in order to fit a Hamiltonian H=T+V fitting to the Riemann zeros and... more
The Riemann hypothesis states that the complex zeros of ζ(s) lie on the critical line Re(s) = 1 2 that is the non-imaginary solutions E n of ζ 1 2 + iE n = 0 are all real. George Pólya suggested a physical approach to prove the Riemann... more
The Riemann's hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn = 1/2 + iλn. Earlier work on the RH based on supersymmetric QM, whose potential was related to the Gauss-Jacobi theta series,... more
In this note, we give some explicit upper and lower bounds for the summation P 0<γ≤T 1 γ , where γ is the imaginary part of nontrivial zeros ρ = β + iγ of ζ(s).
A short review of Schrödinger hamiltonians for which the spectral problem has been related in the literature to the distribution of the prime numbers is presented here. We notice a possible connection between prime numbers and centrifugal... more
By using an alternative factorization, we obtain a self-adjoint oscillator operator of the form
"Presentamos una caracterización de la cota inferior d para la distanciamínima de códigos algebraico-geométricos unipuntuales sobre curvas castillo. Calculamos explícitamente esta cota en el caso de un semigrupo de Weierstrass generado... more
Abstract: In this article, we discuss the remarkable connection between two very different fields, number theory and nuclear physics. We describe the essential aspects of these fields, the quantities studied, and how insights in one have... more
The Riemann's hypothesis (RH) states that the nontrivial zeros of the Riemann zeta-function are of the form sn = 1/2 + iλn. Earlier work on the RH based on supersymmetric QM, whose potential was related to the Gauss-Jacobi theta series,... more
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