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Computer Science Preprint PDF DOI

Line Segment Clipping using Quadrilateral Concavity and Convexity

Bimal Kumar Ray · 2026

This paper proposes an algorithm for clipping line segment against an axis-aligned rectangular window. The conventional algorithms for line segment clipping treat the clipping boundary and/or the line…

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Mathematics Preprint PDF DOI

Pancyclicity in Graph Families with the Ore-Type Condition

Luyi Li, Yubo Wang, Guiying Yan · 2026

Let $ n \in \mathbb{N} $ with $ n \geq 3 $, and let $\mathcal{G} = \{G_i:i\in [n]\} $ be a family of $ n $-vertex graphs on a common vertex set $V$, where the graphs in the family do not need to be di…

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Engineering Preprint PDF DOI

Feedback Linearization of Hyperbolic PDEs with Volterra Nonlinearities

Miroslav Krstic · 2026

Alberto Isidori's framework of geometric nonlinear control, and particularly of feedback linearization, is the inspiration behind PDE backstepping: apply a transfromation of the state to cast the plan…

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Mathematics Preprint PDF DOI

Deformation of pairs of $\mathbb{P}^3$ and hypersurfaces

Jungkai Chen, Yongnam Lee, Phin-Sing Soo · 2026

Motivated by DeVleming's work on moduli of surfaces in $\mathbb{P}^3$ and Chen-Hu-Jiang's work on moduli of threefolds with volume $2$ and geometric genus $4$, we study the deformation of pairs of $\m…

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Mathematics Preprint PDF DOI

Components of strata of k-differentials and their orbit closures

Paul Apisa, Juliet Aygun · 2026

We obtain a complete classification of components of strata of holomorphic and meromorphic k-differentials. We show that, when genus is at least two and outside of explicit exceptions when k < 4, ther…

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Mathematics Preprint PDF DOI

On $S$-Noetherian Lattices

Sachin Sarode, Chetan Patil, Vinayak Joshi · 2026

In this paper, we define and study $S$-Noetherian lattices as a natural generalization of Noetherian rings. We prove that a ring $R$ is $S$-Noetherian if and only if its ideal lattice, $Id(R)$, is $S_…

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Mathematics Preprint PDF DOI

Some local and global properties of secant varieties of nonsingular projective curves

Lawrence Ein, Wenbo Niu, Jinhyung Park · 2026

The main goal of this paper is to study some local and global properties of secant varieties of algebraic curves. These results complement our previous work [8] by addressing issues given therein and …

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Physics Preprint PDF DOI

The mixed-dimensional quantum MacWilliams identity: bounds for codes and absolutely maximally entangled states in heterogeneous systems

David Gonzalez-Lociga, Simeon Ball · 2026

As emerging quantum architectures evolve into heterogeneous networks combining different physical substrates, such as qubits for logic and higher-dimensional qudits for robust communication, the tradi…

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Mathematics Preprint PDF DOI

Symmetric Limit Cycles in 3D Piecewise Linear Systems with Visible-visible Two-Fold Singularity

Samuel Carlos S. Ferreira, Bruno R. Freitas, Joao Carlos R. Medrado · 2026

We analyze a three-dimensional discontinuous piecewise linear system \(Z=(X,Y)\) whose switching manifold \(\Sigma\) contains visible-visible two-fold intersection lines. Assuming that the matrices \(…

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Physics Preprint PDF DOI

LAMOST J052016.79+345651.7: An EW-type Binary with Emission Line Spectra and Circumstellar Material

Yanhui Chen, Chaomi Duan, Yi Yu · 2026

LAMOST J052016.79+345651.7 was identified as an EW-type eclipsing binary by Chen et al. when studying the periodic variable stars based on the ZTF telescope. An orbital period of 0.3507818 days has be…

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Mathematics Preprint PDF DOI

Koszul modules, holonomy Lie algebras, and resonance of groups and CDGAs

Alexander I. Suciu · 2026

We develop a Koszul-theoretic framework for comparing classical Alexander-type invariants with infinitesimal invariants arising from finite-type commutative differential graded algebra models. The cen…

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Physics Preprint PDF DOI

AutoQResearch: LLM-Guided Closed-Loop Policy Search for Adaptive Variational Quantum Optimization

Monit Sharma, Hoong Chuin Lau · 2026

Configuring variational quantum algorithms for combinatorial optimization remains a difficult, expert-driven process requiring coordinated choices over solver family, ansatz, objective, and optimizer.…

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Mathematics Preprint PDF DOI

$q$-Derivative Grammar

Guo-Niu Han, Kathy Q. Ji, Huan Xiong · 2026

The concept of context-free grammar in Combinatorics was first introduced by Chen in 1993. In 1996, Dumont significantly extended the theory of context-free grammars to a variety of other combinatoria…

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Computer Science Preprint PDF DOI

Constructive Separations from Gate Elimination

Marco Carmosino, Ngu Dang, Tim Jackman · 2026

Gate elimination is the primary technique for proving explicit lower bounds against general Boolean circuits, including Li and Yang's state-of-the-art $3.1n - o(n)$ bound for affine dispersers (STOC 2…

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Mathematics Preprint PDF DOI

On optimization on ravine functions. Minkowski-Cohn moduli surface in Cohn parameterization

Nikolaj M. Glazunov · 2026

This paper presents a brief overview of ravine functions using the example of the Minkowski-Cohn moduli surface from the point of view of optimization on it. Elements of representation and solution of…

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Physics Preprint PDF DOI

Data-driven reconstruction of spatiotemporal phase dynamics for traveling and oscillating patterns via Bayesian inference

Takahiro Arai, Toshio Aoyagi, Yoji Kawamura · 2026

Building on the phase reduction theory formulated for reaction-diffusion systems with spatial translational symmetry, we develop a data-driven method that reconstructs the spatiotemporal phase dynamic…

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Computer Science Preprint PDF DOI

Characterizations of Admissible Objective Functions for Hierarchical Clustering

Ryuki Tsukuba, Kazutoshi Ando · 2026

Hierarchical clustering is a fundamental task in data analysis, yet for a long time it lacked a principled objective function. Dasgupta [STOC 2016] initiated a formal framework by introducing a discre…

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Mathematics Preprint PDF DOI

A Milestone in Formalization: The Sphere Packing Problem in Dimension 8

Sidharth Hariharan, Christopher Birkbeck, Seewoo Lee, Ho Kiu Gareth Ma, Bhavik Mehta, Auguste Poiroux, Maryna Viazovska · 2026

In 2016, Viazovska famously solved the sphere packing problem in dimension $8$, using modular forms to construct a 'magic' function satisfying optimality conditions determined by Cohn and Elkies in 20…

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Engineering Preprint PDF DOI

sumoITScontrol: Traffic Controller Collection for SUMO Traffic Simulations

Kevin Riehl, Anastasios Kouvelas, Michail A. Makridis · 2026

Reliable benchmarking is essential for progress in intelligent traffic control research. While microscopic traffic simulators such as SUMO enable detailed modelling of individual vehicle interactions,…

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Mathematics Preprint PDF DOI

Relations between higher level Hurwitz class numbers

Ngoc Trinh Le · 2026

We connect generalizations of the classical Hurwitz class numbers coming from two different frameworks: one introduced by Pei and Wang, arising from the generalized Cohen--Eisenstein series, and anoth…

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