The linear response of an electron–ion plasma to an applied oscillating electric field is studied within the framework of Bloch’s classical hydrodynamic model. The ions are assumed to be fixed in space and distributed according to a known probability distribution. The linearized equations of...

We give a new proof of the well-known upper bound on the correlation function of a gas of non-overlapping dipoles of fixed length and discrete orientation working directly in the charge representation, instead of the more usual sine-Gordon representation.

Invariance principle states that a scaled simple random walk converges to the standard Brownian motion.

Recent attacks against critical infrastructures have shown that it is possible to take down an entire infrastructure by targeting only a few of its components. To prevent or minimize the effects of this kind of attacks, it is necessary to identify these critical components whose disruption,...

In this paper we describe a Sequential Importance Sampling (SIS) procedure for counting the number of vertex covers in general graphs. The performance of SIS depends heavily on how close the SIS proposal distribution is to a uniform one over a suitably restricted set. The proposed algorithm...

Introduction to QUBO -- Applications and Computational Advances for Solving the QUBO Model -- Complexity and Polynomially Solvable Special Cases of QUBO -- The Boolean Quadric Polytope -- Autarkies and Persistencies for QUBO -- Mathematical Programming Models and Exact Algorithms -- The Random...