2 citations · 2 across the 2 of their papers we have counts for
3 papers
math.AP2020
No loss of derivatives for hyperbolic operators with Zygmund-continuous coefficients in time
Ferruccio Colombini, Daniele Del Santo, Francesco Fanelli
In this note we prove a well-posedness result, without loss of derivatives, for strictly hyperbolic wave operators having coefficients which are Zygmund-continuous in the time vari…
math.AP2019
A Discrete Algorithm for General Weakly Hyperbolic Systems
Ferruccio Colombini, Tatsuo Nishitani, Jeffrey Rauch
This paper studies the Cauchy problem for variable coefficient weakly hyperbolic first order systems of partial differential operators. The hyperbolicity assumption is that for eac…
math.AP2017★ 2 cited
Weyl formula for the negative dissipative eigenvalues of Maxwell's equations
Ferruccio Colombini, Vesselin Petkov
Let be the semigroup generated by Maxwell's equations in an exterior domain with dissipative boundary condition $E_{tan}- γ(…