Zobrazeno 1 - 10
of 2 272
pro vyhledávání: '"Rinaldi F."'
We study the Birman-Schwinger operator for a self-adjoint realisation of the one-dimensional Hamiltonian with the Coulomb potential. We study both the case in which this Hamiltonian is defined on the whole real line and when it is only defined on the
Externí odkaz:
http://arxiv.org/abs/2405.08618
Optimizing a function without using derivatives is a challenging paradigm, that precludes from using classical algorithms from nonlinear optimization and may thus seem intractable other than by using heuristics. However, the field of derivative-free
Externí odkaz:
http://arxiv.org/abs/2403.05322
Autor:
De Soricellis, G., Rinaldi, F., Tengattini, S., Temporini, C., Negri, S., Capelli, D., Montanari, R., Cena, H., Salerno, S., Massolini, G., Guzzo, F., Calleri, E.
Publikováno v:
In Analytica Chimica Acta 22 June 2024 1309
Internet of Space Things (IoST) is a challenging paradigm, which is currently attracting great interest from the scientific and industrial communities. IoST is based on the integration of the space segment into the global Internet of Things (IoT) inf
Externí odkaz:
http://arxiv.org/abs/2109.14904
Autor:
Puthenparampil, M, Marin, A, Zanotelli, G, Mauceri, VA, De Napoli, F, Gaggiola, M, Miscioscia, A, Ponzano, M, Bovis, F, Perini, P, Rinaldi, F, Molon, B, Gallo, P
Publikováno v:
In Multiple Sclerosis and Related Disorders February 2024 82
In this paper, we consider the optimization problem of minimizing a continuously differentiable function subject to both convex constraints and sparsity constraints. By exploiting a mixed-integer reformulation from the literature, we define a necessa
Externí odkaz:
http://arxiv.org/abs/2104.13244
In this paper we provide a detailed description of the eigenvalue $ E_{D}(x_0)\leq 0$ (respectively $ E_{N}(x_0)\leq 0$) of the self-adjoint Hamiltonian operator representing the negative Laplacian on the positive half-line with a Dirichlet (resp. Ne
Externí odkaz:
http://arxiv.org/abs/2104.06745
Autor:
Kungurtsev, V., Rinaldi, F.
In this paper we consider stochastic weakly convex composite problems, however without the existence of a stochastic subgradient oracle. We present a derivative free algorithm that uses a two point approximation for computing a gradient estimate of t
Externí odkaz:
http://arxiv.org/abs/2002.08083
Publikováno v:
Math Phys Anal Geom 22, 4 (2019)
In this paper we adapt the mathematical machinery presented in \cite{P1} to get, by means of the Laplace-Beltrami operator, the discrete spectrum of the Hamiltonian of the Schr\"{o}dinger operator perturbed by an actractive 3D delta interaction in a
Externí odkaz:
http://arxiv.org/abs/2002.12110
Autor:
Nucera, B., Rinaldi, F., Dono, F., Lanzone, J., Evangelista, G., Consoli, S., Tappatà, M., Narducci, F., Troisi, S., Trinka, E., Brigo, F.
Publikováno v:
In Seizure: European Journal of Epilepsy July 2023 109:52-59