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๐Ÿ” yu chen ๐Ÿ“‚ Mathematics
Showing 8515 results for "yu chen" in Mathematics
Mathematics Preprint PDF DOI

Pancyclicity in Graph Families with the Ore-Type Condition

Luyi Li, Yubo Wang, Guiying Yan ยท 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 diโ€ฆ

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Holomorphic disks and tropical Lagrangians

Chris T. Woodward ยท 2026

We develop a calculus for counting pseudoholomorphic disks with boundary in tropical Lagrangians contained in almost toric manifolds, using our previous work with Venugopalan. The results are mostly iโ€ฆ

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When all parallel sets of a $ C^1 $-hypersurface are nowhere $ C^1 $-regular

Mario Santilli ยท 2026

We prove a necessary and sufficient condition for a $ C^1 $-hypersurface to have all parallel sets nowhere $ C^1 $-regular. As a corollary, we deduce that for a generic $ C^1 $-regular convex body allโ€ฆ

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

Jungkai Chen, Yongnam Lee, Phin-Sing Soo ยท 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 $\mโ€ฆ

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On a conjecture of distance spectral extremal problems

Hongzhang Chen, Jianxi Li, Yongtao Li ยท 2026

Brualdi and Hoffman proposed a well-known problem of determining the graph with maximum adjacency spectral radius among all graphs with given size $m$. Early work by Friedland and Stanley addressed soโ€ฆ

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Components of strata of k-differentials and their orbit closures

Paul Apisa, Juliet Aygun ยท 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, therโ€ฆ

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A note on four dimensional Shrinking Gradient Ricci Solitons with Constant Scalar Curvature

Chen Wang, Guoqiang Wu ยท 2026

Let $(M^4, g, f)$ be a four-dimensional complete noncompact gradient shrinking Ricci soliton with the equation $Ric+\nabla^2f= \frac{1}{2}g$. If its scalar curvature is $1$, Cheng-Zhou \cite{Cheng-Zhoโ€ฆ

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Positive mass theorem for initial data sets with arbitrary ends

Tin-Yau Tsang ยท 2026

We showed a positive energy theorem for asymptotically flat initial data sets with the concept of spectral PSC by He-Shi-Yu, Bi-Hao-He-Shi-Zhu and Brendle-Wang. Then, we proved a quantitative shieldinโ€ฆ

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Excess logarithmic residues for foliations by curves and applications

Alana Cavalcante, Mauricio Correa, Fernando Lourenco, Elaheh Shahsavaripour ยท 2026

We introduce excess logarithmic residues for one-dimensional holomorphic foliations tangent to a divisor. They arise from the comparison between the logarithmic normal sheaf and the ordinary normal shโ€ฆ

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On the meagerness of the set of irregular bundles on Hopf surfaces

Edoardo Ballico, Elizabeth Gasparim ยท 2026

Let $\mathcal M_{r,c}$ denote the moduli space of stable bundles with rank $r$ and second Chern class $c>0$ on a Hopf surface. We prove that the subset of $\mathcal M_{r,c}$ formed by irregular bundleโ€ฆ

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Total absolute curvature and rigidity of surfaces in Cartan-Hadamard manifolds

Mohammad Ghomi, Joseph Ansel Hoisington, Matteo Raffaelli, John Ioannis Stavroulakis ยท 2026

We show that closed surfaces with minimal total absolute curvature in Cartan-Hadamard 3-manifolds bound flat convex bodies. This generalizes Chern-Lashof's theorem for surfaces in Euclidean space and โ€ฆ

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

Alexander I. Suciu ยท 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 cenโ€ฆ

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$q$-Derivative Grammar

Guo-Niu Han, Kathy Q. Ji, Huan Xiong ยท 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 combinatoriaโ€ฆ

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A note on Rigidity of Shrinking Gradient Ricci Solitons with Constant Scalar Curvature

Chen Wang, Guoqiang Wu ยท 2026

Let $(M^n, g, f)$ be an $n$-dimensional complete noncompact gradient shrinking Ricci soliton with the equation $Ric+\nabla^2f= \frac{1}{2}g$. 1. If its scalar curvature is $\frac{k}{2}$, Ricci curvaโ€ฆ

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Contact flexibility and rigidity for toric Gorenstein prequantizations and Ehrhart theory of toric diagrams

Miguel Abreu, Leonardo Macarini, Antonio Rocha-Neves ยท 2026

Gorenstein toric contact manifolds are good toric contact manifolds with zero first Chern class that are completely determined by certain integral convex polytopes called toric diagrams. The Ehrhart pโ€ฆ

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When Does Dynamic Preconditioning Preserve the Polyak-Ruppert CLT? A Stabilization Threshold

Sunyoung An, Xiaoming Huo ยท 2026

Polyak-Ruppert averaging yields an asymptotically normal estimator with sandwich covariance $H^{-1}SH^{-1}$, the foundation of online inference. When the gradient step is preconditioned by a data-drivโ€ฆ

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A Frobenius Theorem on Fr\'echet Manifolds

Kaveh Eftekharinasab ยท 2026

We investigate the integrability of Fr\'{e}chet tangent distributions on Fr\'{e}chet manifolds. We introduce the local well-posedness Condition W for split tangent subbundles, which reduces the local โ€ฆ

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A link between error terms when counting smooth and rough numbers

Andreas Weingartner ยท 2026

We establish a relationship between error terms appearing in estimates for the counting functions of smooth and rough numbers. We then apply this link to obtain an explicit upper bound for the error tโ€ฆ

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Existence and uniqueness for singular stochastic differential equations with piecewise well-behaved coefficients

Sara Mazzonetto, Benoit Nieto ยท 2026

We study existence and uniqueness for one-dimensional generalized stochastic differential equations with singular coefficients, including distributional drift and degenerate, possibly discontinuous, dโ€ฆ

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Strong factorization theorem for smooth vectors of exponential solvable Lie group representations

Santiago Chaves, Andreas Debrouwere, Alberto Hernandez Alvarado, Jasson Vindas, Rafael Zamora ยท 2026

We establish new strong factorization properties for the smooth vectors of representations of exponential solvable Lie groups on Fr\'{e}chet spaces. In particular, our results improve upon the Dixmierโ€ฆ

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