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๐Ÿ” tim klinger ๐Ÿ“‚ Mathematics
Showing 24665 results for "tim klinger" in Mathematics
Mathematics Preprint PDF DOI

Stein's square function associated with the Bochner-Riesz means on M\'etivier groups and its applications

Joydwip Singh ยท 2026

In this paper, we study the $L^p$-boundedness of Stein's square function $\mathfrak{S}^{\alpha}(\mathcal{L})$ associated with the sub-Laplacian $\mathcal{L}$ on M\'etivier group $G$. A key aspect of oโ€ฆ

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Mathematics Preprint PDF DOI

Towards Bigness equivalence

F. Laytimi, D. S. Nagaraj ยท 2026

On the flag variety $ \mathcal{F}l_s(E)$ associated to a vector bundle $E,$ , a sequence $s$ and a partition $a,$ there is a line bundle $\it Q^a_s$ on $ \mathcal{F}l_s(E).$ The aim of this papeโ€ฆ

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Mathematics Preprint PDF DOI

A note on estimation of quarticity based on spot volatility

Yi Guo ยท 2026

In this paper, we aim at estimating the quarticity of continuous It\^{o} semimartingales. Instead of using some classical estimators, we introduce a more intuitive one and establish a central limit thโ€ฆ

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Mathematics Preprint PDF DOI

Exotic Surfaces in 4-manifolds and Surface Corks

Cindy Zhang ยท 2026

A fundamental result in 4-manifold topology asserts that every exotic smooth structure on a simply connected closed 4-manifold is determined by a cork -- a codimension-zero compact, contractible submaโ€ฆ

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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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Mathematics Preprint PDF DOI

Existence and Uniqueness of Normalized Multi-peak Solutions for Coupled Nonlinear Schr\"odinger Systems

Wenhao Hu, Benniao Li, Wei Long, Chunhua Wang ยท 2026

We consider the following two-component coupled nonlinear Schr\"odinger (CNLS) system: \[ \begin{cases} -\Delta u +(P(x) + \lambda ) u=\mu_1 u^3+\beta u v^2, & \text{in } \mathbb{R}^N,\\ -\Delta v +(Qโ€ฆ

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Mathematics Preprint PDF DOI

A class of Exel--Laca algebras reciprocal to Cuntz--Krieger algebras

Kengo Matsumoto, Taro Sogabe ยท 2026

The reciprocality means a duality in Kirchberg algebras between K-theory groups and strong extension groups. In the paper, we will find a certain class of unital simple Exel--Laca algebras for which tโ€ฆ

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Mathematics Preprint PDF DOI

Perfectoid splitting and global $+$-regularity for smooth hypersurfaces

Shou Yoshikawa ยท 2026

In this paper, we prove that smooth Calabi--Yau hypersurfaces of degree $d$ over complete unramified discrete valuation rings with residue characteristic $p$ are perfectoid split if $p$ is larger thanโ€ฆ

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Mathematics Preprint PDF DOI

Sharp One-Dimensional Sub-Gaussian Comparison in Convex Order

Yihan Zhang ยท 2026

We prove that any random variable $X$ whose moment generating function is point-wise upper bounded by that of $ G \sim \mathcal{N}(0,1) $ must be dominated by $ G/\mathbb{E}[|G|] $ in convex order, meโ€ฆ

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Mathematics Preprint PDF DOI

The Expiring Coupon Collector: Sliding-Window Surjection Flux and Rare-Entry Laws

Christopher D. Long ยท 2026

We study the coupon collector with deterministic expiration: one coupon is drawn at each time, and each coupon remains active for exactly $M$ draws. Completion occurs when all $n$ coupon types are simโ€ฆ

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Mathematics Preprint PDF DOI

A Schur-positivity classification for complete multipartite graphs

Ethan Shelburne, Stephanie van Willigenburg ยท 2026

A graph is Schur-positive if its chromatic symmetric function expands non-negatively in the Schur basis. We determine a full Schur-positivity classification for complete multipartite graphs by showingโ€ฆ

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Mathematics Preprint PDF DOI

A PDE approach to Benamou--Brenier formula for the Schr\"odinger problem

Mattia Garatti, Luca Nenna, Simona Rota Nodari, Luca Tamanini ยท 2026

We studied the Benamou--Brenier formulation of the Schr\"odinger problem, focusing on a gap between theoretical results and applications, that often involve measures with unbounded support. While the โ€ฆ

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Mathematics Preprint PDF DOI

Sharp Strichartz estimate for the 1D periodic Schr\"odinger equation

Puti Dai, Zihua Guo ยท 2026

We prove the following estimate \[ \|{e^{it\partial_x^2}f}\|_{L_{(t,x)\in \mathbb{T}^2}^6}\leq C (\log N)^{{1/6}} \|f\|_{L^2_x(\mathbb{T})}, \] assuming $\mbox{supp} (\hat f)\subset [-N,N]$ for $N>1$.โ€ฆ

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Dictionary learning for Kernel EDMD

Erik Lien Bolager, Boumediene Hamzi, Houman Owhadi, Ioannis G. Kevrekidis, Felix Dietrich ยท 2026

Studying nonlinear dynamical systems through their state space behavior can be challenging, and one possible alternative is to analyze them via their associated Koopman operator. This turns the nonlinโ€ฆ

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Higher order Schr\"odinger operators

Federica Gregorio, Chiara Spina, Cristian Tacelli ยท 2026

In this paper we consider higher order Schr\"odinger operators $$\mathcal L u=Lu+Vu,$$ where $L$ denotes a fourth order operator and $V\geq 0$ a suitable potential. We initiate our analysis by consideโ€ฆ

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Fluctuation from averaging limit under fractional Brownian motion

Xiaoyu Yang, Yong Xu ยท 2026

This work considers a type of slow-fast system, where the slow component is driven by fractional Brownian motion with H > 1/2 and the fast component is a Markovian stationary process. Our solution mapโ€ฆ

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A local-global correspondence for perfectoid purity

Ryo Ishizuka, Shou Yoshikawa ยท 2026

We introduce (lim-)perfectoid splitting, which is a global variant of (lim-)perfectoid purity. Our main result establishes a correspondence between the lim-perfectoid splitting of projective schemes aโ€ฆ

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A Combinatorial Optimisation Approach to Multi-factorial Gap-filling in Genome-scale Metabolic Models (GEMs)

Philip Kilby, Sevvandi Kandanaarachchi, Matthew J. Morgan, Amy M. Paten, Mariana Velasque, Andrew C. Warden, Juan P. Molina Ortiz ยท 2026

Genome-Scale Metabolic Models (GEMs) describe the interactions between genes, proteins, and the biochemical reactions that underpin an organism's metabolism aiming to computationally simulate functionโ€ฆ

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Linear continuous operators with bounded supports

Vesko Valov ยท 2026

For any Tychonoff space $X$ let $D(X)$ be either the set $C(X)$ of all continuous functions on $X$ or the set $C^*(X)$ of all bounded continuous functions on $X$. When $D(X)$ is endowed with the pointโ€ฆ

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On a Keller-Segel type equation to model Brain Microvascular Endothelial Cells growth's patterns

B Ambrosio, A Garroudji, S Fitzsimons, H Zaag, F.M. Elahi ยท 2026

This article presents a partial differential equation (PDE) of Keller-Segel (KS) type that reproduces patterns commonly observed during the growth of brain microvasculature. We provide mathematical inโ€ฆ

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