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math.AP2026
Spectral inequalities for weighted -Laplacians via Talenti symmetrization
Giulio Bartoli, Giorgio Saracco
We consider the weighted -Laplacian associated with a measure that is absolutely continuous with respect to the Lebesgue measure on an open connected subset $X\subset\mathbb…
eess.SP2026
SIM-Aided Near-Field Channel and Localization Estimation With Dimensionality Reduction: A Multiport Network Theory Approach
Andrea Abrardo, Bartoli Giulio
The deployment of Extremely Large-Scale Antenna Arrays for 6G enables radiative near-field sensing but poses significant challenges in terms of hardware complexity and interference…
eess.SP2026
From Multi-Port Models to Cascade Structures: Optimization of Active Unilateral Stacked Intelligent Metasurfaces
Andrea Abrardo, Giulio Bartoli, Marco Di Renzo +1
This paper develops a multi-port S-parameter framework for the analysis and optimization of stacked intelligent metasurfaces (SIMs) with unilateral active interconnections. By mode…