output
20192026
most citedVibration modes of the Euler-Bernoulli beam equation with singularities

4 citations

researchers with a paper here
collaborating institutions

8 papers

gr-qc2026★ 1 cited

Series solutions to the TOV equations

Paulo Luz

We present general series solutions to the Tolman-Oppenheimer-Volkoff equations for compact stellar objects. We develop an algorithm to compute the coefficients of the power series…

gr-qc2026★ 1 cited

Generating anisotropic models for relativistic stellar objects

Paulo Luz, Sante Carloni

We introduce a new type of generating theorems in General Relativity for anisotropic, static, spherically symmetric solutions of the Einstein field equations. The results are used…

eess.SY2025

Hopfield Neural Networks for Online Constrained Parameter Estimation with Time-Varying Dynamics and Disturbances

Miguel Pedro Silva

This paper proposes two projector-based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time-varying data, additive disturbances, and sl…

math.FA2023★ 1 cited

On Wigdersons' approach to the uncertainty principle

Nuno Costa Dias, Franz Luef, João Nuno Prata

We revisit the uncertainty principle from the point of view suggested by A. Wigderson and Y. Wigderson. This approach is based on a primary uncertainty principle from which one can…

math.AP2023★ 4 cited

Vibration modes of the Euler-Bernoulli beam equation with singularities

Nuno Costa Dias, Cristina Jorge, João Nuno Prata

We consider the time dependent Euler--Bernoulli beam equation with discontinuous and singular coefficients. Using an extension of the Hörmander product of distributions with non-in…

math.FA2023★ 3 cited

An existence and uniqueness result about algebras of Schwartz distributions

Nuno Costa Dias, Cristina Jorge, Joao Nuno Prata

We prove that there exists essentially one {\it minimal} differential algebra of distributions $\A$, satisfying all the properties stated in the Schwartz impossibility result [L. S…