Research Article
Rank Lifting From Rank-Zero Elliptic Curves Via Quadratic Twists
Kouakou Kouassi Vincent*,
Soro Kolo Fousséni
Issue:
Volume 15, Issue 1, February 2026
Pages:
1-5
Received:
30 November 2025
Accepted:
7 January 2026
Published:
16 January 2026
Abstract: We prove that rank-zero elliptic curves over generate positive-rank elliptic curves through the unit circle, via quadratic twisted models . This construction demonstrates rank evolution from zero to infinite rational points, complementing high-rank families. All rank-zero status and positive-rank emergence rigorously verified computationally. SMC(2020): 11G05, 14H52, 11Y50.
Abstract: We prove that rank-zero elliptic curves over generate positive-rank elliptic curves through the unit circle, via quadratic twisted models . This construction demonstrates rank evolution from zero to infinite rational points, complementing high-rank families. All rank-zero status and positive-rank emergence rigorously verified computationally. SMC(2...
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Research Article
Norm of General Derivation on Tensor Product of
C*-Algebras
Issue:
Volume 15, Issue 1, February 2026
Pages:
6-10
Received:
22 January 2026
Accepted:
4 February 2026
Published:
26 February 2026
DOI:
10.11648/j.pamj.20261501.12
Downloads:
Views:
Abstract: The study of operator theory, specifically the determination of the norm of general derivations in C* algebras, has attracted significant attention in recent years. This problem has been approached through various methods across different spaces, yielding several results. The norm of a general derivation is crucial for understanding the structure and behavior of derivations in the context of C* algebras, with implications for functional analysis and operator theory. Despite previous efforts, a complete understanding remains elusive. The purpose of this paper is to investigate this problem using the finite rank operator in the tensor product of C*-algebras. By leveraging the tensor product structure, we explore how finite rank operators can provide insights into the norm of general derivations. The research utilizes a mathematical framework that examines the behavior of bounded linear operators within the tensor product of Hilbert spaces and C*-algebras. Through this approach, we aim to advance existing knowledge and offer new results that could potentially contribute to the field. The final conclusion of the study confirms that the use of finite rank operators in the tensor product of C*-algebras offers a valuable method for approximating and understanding the norm of general derivations, providing a more refined approach than previous techniques.
Abstract: The study of operator theory, specifically the determination of the norm of general derivations in C* algebras, has attracted significant attention in recent years. This problem has been approached through various methods across different spaces, yielding several results. The norm of a general derivation is crucial for understanding the structure a...
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,
Kinyanjui Jeremiah Ndungu
