On the semigroup of mappings on Fréchet Montel space
On the Semigroup of the Stokes Operator for Exterior Domains in Lq-Spaces.
On the semigroups of age-size dependent population dynamcis with spatial diffusion.
On the Sharpness of Non-Optimal Approximation for Semigroup Operators.
On the solutions of the inhomogeneous evolution equation in Banach spaces
Vengono dati nuovi teoremi di regolarità per le soluzioni dell'equazione nel caso in cui è il generatore infinitesimale di un semigruppo analitico in uno spazio di Banach e è una funzione continua.
On the Spectra of Certain Semi-Groups.
On the spectral bound of the generator of a -semigroup
We give several conditions implying that the spectral bound of the generator of a -semigroup is negative. Applications to stability theory are considered.
On the spectral properties of translation operators in one-dimensional tubes
We study the spectral properties of some group of unitary operators in the Hilbert space of square Lebesgue integrable holomorphic functions on a one-dimensional tube (see formula (1)). Applying the Genchev transform ([2], [5]) we prove that this group has continuous simple spectrum (Theorem 4) and that the projection-valued measure for this group has a very explicit form (Theorem 5).
On the spectrum of a one-parameter strongly continous representation.
On the spectrum of the analytic generator.
On the stability of differentiability of semigroups.
On the stability of nonlinear Feynman-Kac semigroups
On the stability of strongly continuous semigroups of positive operators on
On the Stepanov almost periodic solution of a second-order infinitesimal generator differential equation.
On the Stokes equation with Neumann boundary condition
In this paper, we study the nonstationary Stokes equation with Neumann boundary condition in a bounded or an exterior domain in ℝⁿ, which is the linearized model problem of the free boundary value problem. Mainly, we prove estimates for the semigroup of the Stokes operator. Comparing with the non-slip boundary condition case, we have the better decay estimate for the gradient of the semigroup in the exterior domain case because of the null force at the boundary.
On the structure of commuting isometries
On the structure of subordinate semigroups.
On the Surjective Dunford-Pettis Property.
On the surjective Dunford-Pettis property
On the Sz.-Nagy boundedness condition on abelian involution semigroups