Julio H. Toloza

The class of n-entire operators

We introduce a classification of simple, regular, closed symmetric operators with deficiency indices (1,1) according to a geometric criterion that extends the classical notions of entire operators and entire operators in the generalized sense due to M. G. Krein. We show that these classes of operators have several distinctive properties, some of them related to the spectra of their canonical selfadjoint extensions. In particular, we provide necessary and sufficient conditions on the spectra of two canonical selfadjoint extensions of an operator for it to belong to one of our classes. Our discussion is based on some recent results in the theory of de Branges spaces.

AGING IN A TWO-DIMENSIONAL ISING MODEL WITH DIPOLAR INTERACTIONS

Aging in a two-dimensional Ising spin model with both ferromagnetic exchange and antiferromagnetic dipolar interactions is established and investigated via Monte Carlo simulations. The behaviour of the autocorrelation function

Entropy, fidelity, and double orthogonality for resonance states in two-electron quantum dots

C(t,t_w)

Dispersion Estimates for Spherical Schrödinger Equations

is analyzed for different values of the temperature, the waiting time

Exponentially accurate error estimates of quasiclassical eigenvalues. II. Several dimensions

t_w

Exponentially Accurate Error Estimates of Quasiclassical Eigenvalues

and the quotient

The Spectra of Selfadjoint Extensions of Entire Operators with Deficiency Indices (1,1)

\delta=J_0/J_d

Bounded rank-one perturbations in sampling theory

,

On dB spaces with nondensely defined multiplication operator and the existence of zero-free functions

J_0

A Parallel Multilevel Data Decomposition Algorithm for Orientation Estimation of Unmanned Aerial Vehicles

and