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๐Ÿ” ethan baker ๐Ÿ“‚ Mathematics
Showing 38435 results for "ethan baker" in Mathematics
Mathematics Preprint PDF DOI

Beyond first-order accuracy in continuous-forcing immersed boundary methods, and their well-conditioned projection-based solution

Diederik Beckers, H. Jane Bae, Andres Goza ยท 2026

We introduce a refined immersed boundary (IB) methodology that is better-than-first-order accurate in practice, while preserving key properties of "continuous-forcing" IB approaches that retain a singโ€ฆ

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Mathematics Preprint PDF DOI

A torsion-intersection proof of perfect-cuboid nonexistence on 1,072 explicit master-tuple fibers

Rene Peschmann ยท 2026

Building on the genus-3 reduction $C_A : w^2 = \lambda^8 + A \lambda^4 + 1$ established in our companion paper (arXiv:2604.09328), we give an unconditional proof of the perfect-cuboid conjecture ("Conโ€ฆ

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Mathematics Preprint PDF DOI

Noise-induced enhancement of regime lifetimes -- A data-driven approach using deterministic trajectories

Henry Schoeller, Robin Chemnitz, Peter Koltai, Maximilian Engel, Stephan Pfahl ยท 2026

We investigate the lifetime of dynamical regimes under the impact of noise motivated by low-dimensional models of the atmosphere. One may expect that the inclusion of noise tends to make the system leโ€ฆ

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Mathematics Preprint PDF DOI

Geometric densities and compression radii of knot types

Makoto Ozawa ยท 2026

We study scale-invariant geometric quantities associated with embedded closed curves in Euclidean three-space, with an emphasis on their behavior under optimization within a fixed knot type. Given a Eโ€ฆ

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Mathematics Preprint PDF DOI

A Ring structure on the Class of Combinatorial Games

Harry Altman, Paolo Lipparini ยท 2026

J. Conway defined useful operations on the Class of combinatorial games and also introduced a notion of equivalence between games. Conway showed that, under his equivalence, games form a Group. Howeveโ€ฆ

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Mathematics Preprint PDF DOI

Uncentred maximal operators with respect to half balls on Damek--Ricci spaces

Nikolaos Chalmoukis, Stefano Meda, Effie Papageorgiou, Federico Santagati ยท 2026

In this paper we study a variant of the uncentred Hardy--Littlewood maximal operator on Damek--Ricci spaces in which balls are replaced by suitable half balls. Perhaps surprisingly, such modified maxiโ€ฆ

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Mathematics Preprint PDF DOI

The existence criterion of holomorphic discs for higher $A_\infty$ operations via minimal discs

Qiang Tan, Zuyi Zhang ยท 2026

The main theorem of the paper provides an existence criterion of holomorphic discs for higher $A_\infty$ operations. The key step is to show that if a minimal disc in a K\"ahler manifold with boundaryโ€ฆ

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Mathematics Preprint PDF DOI

Extension of Excess Demand Ascending Auction to Multi-Demand Model by Discrete Convex Analysis Approach

Kazuo Murota, Akiyoshi Shioura ยท 2026

We consider the problem of finding the (unique) minimal Walrasian equilibrium price in multi-item, multi-unit auction models: there are multiple indivisible items for sale, with several units of each โ€ฆ

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Mathematics Preprint PDF DOI

Berge $k$-Factors of Regular Hypergraphs

Mikio Kano, Shun-ichi Maezawa, Akira Saito, Kiyoshi Yoshimoto ยท 2026

A Berge $k$-factor in a hypergraph is a generalization of a $k$-factor in a graph. In this paper, we study the problem of determining the values $k$ such that every $\lambda$-edge-connected $r$-regulaโ€ฆ

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Mathematics Preprint PDF DOI

Estimates of the modulus of continuity of the logarithmic double layer potential in the closure of domain

Sergiy Plaksa, Alexander Sarana ยท 2026

We obtain estimates of the modulus of continuity for the real part of the Cauchy-type integral in the closure of domain bounded by an Ahlfors-regular integration curve. These estimates are more exact โ€ฆ

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Mathematics Preprint PDF DOI

Sampler-Robust Optimization under Generative Models

Ziwei Zhang, Jonathan Yu-Meng Li ยท 2026

Modern stochastic optimization pipelines increasingly rely on learned generative models to represent uncertainty, while downstream decisions are evaluated almost entirely through Monte Carlo scenariosโ€ฆ

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Mathematics Preprint PDF DOI

A Regularized Hessian-Free Inexact Newton-Type Method with Global $\mathcal{O}(k^{-2})$ Convergence

Leandro Farias Maia, Antonio Victor B. Nascimento, Paulo Sergio M. Santos, Gilson N. Silva ยท 2026

We propose a regularized Hessian-free Newton-type method for minimizing smooth convex functions with Lipschitz continuous Hessians. The algorithm constructs an approximate Hessian by finite differenceโ€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

Statistical Inference for Homogenization Limits Driven by Wiener or Hermite Processes

Pablo Ramses Alonso-Martin ยท 2026

We study the effective estimation of the diffusivity and Hurst parameter for the homogenized limit of a class of slow/fast systems. Depending on the system parameters, this limit solves a stochastic dโ€ฆ

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Mathematics Preprint PDF DOI

Reliability-based Topology Optimization using Large Deviation Theory

Maryam Maghazeh, Ayyappan Unnikrishna Pillai, Mohammad Masiur Rahaman, Subhayan De ยท 2026

Reliability-based topology optimization (RBTO) requires repeated estimation of small failure probabilities and their gradients, making conventional nested Monte Carlo approaches computationally prohibโ€ฆ

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Mathematics Preprint PDF DOI

Hamilton decompositions of the directed 5-torus for odd modulus

SangHyun Park ยท 2026

We prove that the directed five-dimensional torus $D_5(m) = \operatorname{Cay}((\mathbb{Z}_m)^5, \{e_0, e_1, e_2, e_3, e_4\})$ has a Hamilton decomposition for every odd integer $m \geq 3$. This is thโ€ฆ

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Mathematics Preprint PDF DOI

Polynomial and spectra factorization of graphs obtained by iteration the operad of generalized graph composition

Jean Liendo ยท 2026

The generalized composition graph is used by Cardoso and some researchers for factorization of the adjacency spectrum and Laplacian of a simple graph. Because the generalized composition graph is an eโ€ฆ

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Mathematics Preprint PDF DOI

Robust Model-Based Iteration for Passive Gamma Emission Tomography

Tommi Heikkila, Sara Heikkinen, Riina Rimppi, Tapio Helin ยท 2026

Passive Gamma Emission Tomography (PGET) is an IAEA-approved technique for verifying spent nuclear fuel assemblies prior to geological disposal. Reconstructing the emission and attenuation maps from Pโ€ฆ

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Mathematics Preprint PDF DOI

Quasi graph-additive functions with a prescribed branch

Tibor Kiss ยท 2026

Here, we investigate the solutions to equation \[f(f(-x)+x)=f(-f(x))+f(x),\qquad x\in\mathbb{R}\] that are prescribed on the non-positive half-line. We will refer to this prescribed function as the geโ€ฆ

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Mathematics Preprint PDF DOI

Rational curves on cubic hypersurfaces in positive characteristic

Natsume Kitagawa ยท 2026

We study the moduli spaces of rational curves on cubic hypersurfaces in characteristic $\neq2,3$. As a result, we prove that for every integer $d\geq1$ the Kontsevich moduli space of stable maps on a โ€ฆ

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