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The 2x2 space-filling curve is a type of generalized space-filling curve characterized by a basic unit is in a "U-shape" that traverses a 2x2 grid. In this work, we propose a universal framework for constructing general 2x2 curves where…

Computational Geometry · Computer Science 2025-02-24 Zuguang Gu

In this work, we propose a novel framework for defining the dual structure of a spinor. This construction relies on the basis elements of the Clifford algebra, leading to a covariant structure that embeds the dual. The formulation includes…

Mathematical Physics · Physics 2026-02-26 Rodolfo José Bueno Rogerio , Rogerio Teixeira Cavalcanti , Luca Fabbri

Isogenies occur throughout the theory of elliptic curves. Recently, the cryptographic protocols based on isogenies are considered as candidates of quantum-resistant cryptographic protocols. Given two elliptic curves $E_1, E_2$ defined over…

Number Theory · Mathematics 2020-01-03 Lixia Luo , Guanju Xiao , Yingpu Deng

The literature in persistent homology often refers to a "structure theorem for finitely generated graded modules over a graded principal ideal domain". We clarify the nature of this structure theorem in this context.

Commutative Algebra · Mathematics 2023-02-07 Clara Loeh

In this article, we first prove a general result in topology which states that every quasi-component of a quasi-spectral space is connected. \\ As an application, the structure of the connected components of every quasi-compact…

Commutative Algebra · Mathematics 2026-04-17 Abolfazl Tarizadeh

We present a new approach for matching regular surfaces in a Riemannian setting. We use a Sobolev type metric on deformation vector fields which form the tangent bundle to the space of surfaces. In this article we compare our approach with…

Differential Geometry · Mathematics 2014-09-22 Martin Bauer , Martins Bruveris

This work explores the interplay between quantum information theory, algebraic geometry, and number theory, with a particular focus on multiqubit systems, their entanglement structure, and their classification via geometric embeddings. The…

Quantum Physics · Physics 2025-02-04 Noémie C. Combe

Coinductive reasoning about infinitary structures such as streams is widely applicable. However, practical frameworks for developing coinductive proofs and finding reasoning principles that help structure such proofs remain a challenge,…

Programming Languages · Computer Science 2020-01-13 Yannick Zakowski , Paul He , Chung-Kil Hur , Steve Zdancewic

We define hypersymplectic structures on Lie algebroids recovering, as particular cases, all the classical results and examples of hypersymplectic structures on manifolds. We prove a 1-1 correspondence theorem between hypersymplectic…

Symplectic Geometry · Mathematics 2015-06-15 P. Antunes , J. M. Nunes da Costa

We introduce a new tool for the study of isogeny-based cryptography, namely pairings which are sesquilinear (conjugate linear) with respect to the $\mathcal{O}$-module structure of an elliptic curve with CM by an imaginary quadratic order…

Number Theory · Mathematics 2024-10-02 Joseph Macula , Katherine E. Stange

This is a survey of our research on geometric structures of projective embeddings and includes some topics of our talks in several symposia during 1990-99. We clarify our main problem, which is to construct a kind of geometric composition…

Algebraic Geometry · Mathematics 2007-05-23 Takeshi Usa

A theory of signatures for odd-dimensional links in rational homology spheres is studied via their generalized Seifert surfaces. The jump functions of signatures are shown invariant under appropriately generalized concordance and a special…

Geometric Topology · Mathematics 2007-05-23 Jae Choon Cha , Ki Hyoung Ko

Methods of constructing trigonometric fundamental splines with constant sign and sign-changing convergence factors are given. An example and graphics illustrating the concepts of convergence and interpolation grids are given. Some methods…

Numerical Analysis · Mathematics 2022-10-14 V. Denysiuk

In this paper, we discuss Semantic Construction Grammar (SCG), a system developed over the past several years to facilitate translation between natural language and logical representations. Crucially, SCG is designed to support a variety of…

Computation and Language · Computer Science 2021-12-13 Dave Schneider , Michael Witbrock

We study imbedded hypersurfaces in spacetime whose causal character is allowed to change from point to point. Inherited geometrical structures on these hypersurfaces are defined by two methods: first, the standard rigged connection induced…

General Relativity and Quantum Cosmology · Physics 2010-04-06 Marc Mars , Jose M. M. Senovilla

We present an algebraic framework for interacting extended quantum systems to study complex phenomena characterized by the coexistence and competition of different states of matter. We start by showing how to connect different…

Strongly Correlated Electrons · Physics 2015-06-24 C. D. Batista , G. Ortiz

The tree-level q-map assigns to a projective special real (PSR) manifold of dimension $n-1\geq 0$, a quaternionic K\"{a}hler (QK) manifold of dimension $4n+4$. It is known that the resulting QK manifold admits a $(3n+5)$-dimensional…

Differential Geometry · Mathematics 2022-06-07 Vicente Cortés , Iván Tulli

Quasiconformal maps in the complex plane are homeomorphisms that satisfy certain geometric distortion inequalities; infinitesimally, they map circles to ellipses with bounded eccentricity. The local distortion properties of these maps give…

Complex Variables · Mathematics 2024-09-12 Rosemarie Bongers

The supersymmetric Poisson Sigma model is studied as a possible worldsheet realization of generalized complex geometry. Generalized complex structures alone do not guarantee non-manifest N=(2,1) or N=(2,2) supersymmetry, but a certain…

High Energy Physics - Theory · Physics 2009-11-10 L. Bergamin

In this short survey, we describe our approach for constructing hierarchies of Poisson brackets for classical integrable systems using its' spectral curves.

Mathematical Physics · Physics 2018-05-24 K. L. Vaninsky