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Fingerprint Orientation Refinement through Iterative Smoothing
Pierluigi Maponi, Riccardo Piergallini, Filippo Santarelli
We propose a new gradient-based method for the extraction of the orientation field associated to a fingerprint, and a regularisation procedure to improve the orientation field comp…
On the blow-up of some complex solutions of the 3-d Navier-Stokes Equations: Theoretical Predictions and Computer simulations
Carlo Boldrighini, Sandro Frigio, Pierluigi Maponi
We consider some complex-valued solutions of the Navier-Stokes equations in for which Li and Sinai proved a finite time blow-up. We show that there are two types of solutio…
Computer simulations for the blow-up of complex solutions of the 3-d Navier-Stokes equations
Carlo Boldrighini, Sandro Frigio, Pierluigi Maponi
We present a study by computer simulations of a class of complex-valued solutions of the three-dimensional Navier-Stokes equations in the whole space, which, according to Li and Si…