Convergence Analysis of a Fully Discrete Observer For Data Assimilation of the Barotropic Euler Equations

This paper establishes the first time-uniform error estimate for a fully discrete Luenberger observer applied to the one-dimensional barotropic Euler equations using mixed finite elements and implicit Euler time integration, demonstrating convergence that depends on initial errors, discretization parameters, and measurement noise via a modified relative energy technique.

Aidan Chaumet, Jan GiesselmannThu, 12 Ma🔢 math

Practical Regularized Quasi-Newton Methods with Inexact Function Values

This paper proposes a noise-tolerant regularized quasi-Newton method with a relaxed Armijo-type line search that achieves a global convergence rate of O(1/ε2)\mathcal{O}(1/\varepsilon^2) for smooth nonconvex optimization under inexact function values, demonstrating superior robustness and competitive efficiency in experiments involving both artificial noise and low-precision arithmetic.

Hiroki Hamaguchi, Naoki Marumo, Akiko TakedaThu, 12 Ma🔢 math

Customized Interior-Point Methods Solver for Embedded Real-Time Convex Optimization

This paper presents a customized, dependency-free C-based second-order cone programming solver for embedded real-time guidance and control applications that utilizes a predictor-corrector primal-dual interior-point method with homogeneous embedding to efficiently handle quadratic objectives without sparsity loss, supported by an automated code generation tool that outperforms existing solvers on typical problem scales.

Jae-Il Jang, Chang-Hun LeeThu, 12 Ma⚡ eess

Score Matching Diffusion Based Feedback Control and Planning of Nonlinear Systems

This paper proposes a deterministic diffusion-based framework for controlling the probability density of nonlinear control-affine systems by leveraging a forward noise-excitation process and a reverse denoising feedback law to steer state distributions toward desired targets, with theoretical guarantees for drift-free and linear time-invariant dynamics.

Karthik Elamvazhuthi, Darshan Gadginmath, Fabio PasqualettiThu, 12 Ma⚡ eess

Equilibrium under Time-Inconsistency: A New Existence Theory by Vanishing Entropy Regularization

This paper establishes a new existence theory for equilibria in continuous-time time-inconsistent stochastic control problems by proving that solutions to entropy-regularized exploratory equilibrium HJB equations converge to a weak solution of the generalized equilibrium HJB equation as the regularization vanishes, thereby resolving the open problem of existence without requiring strong regularity assumptions.

Zhenhua Wang, Xiang Yu, Jingjie Zhang, Zhou ZhouThu, 12 Ma🔢 math