V. Druskin

collaborators

2 papers

math.NA2026

Adapting the Lanczos algorithm to matrices with almost continuous spectra

Jörn Zimmerling, Vladimir Druskin

We consider approximating $B^{T} (A + s I)^{- 1} B$ , where $A \in R^{n \times n}$ is large, symmetric positive definite, and $B \in R^{n \times p}$ with $p ≪ n$ . We focus on t…

physics.geo-ph2025

A Targeted Quadrature Framework for Simulating Large-Scale 3D Anisotropic Electromagnetic Measurements

Jörn Zimmerling, Vladimir Druskin, Sofia Davydycheva +5

We develop a new, efficient, and accurate method to simulate frequency-domain borehole electromagnetic (EM) measurements acquired in the presence of three-dimensional (3D) variatio…