A new theorem shows that a bootstrap algorithm can estimate the impulsivity or tail thickness of symmetric a-stable (SαS) signals. SαS bell curves include the Gaussian bell curve as a special but non-impulsive case. Signals grow more impulsive as the bell curve’s tail thickness increases or as the tail-thickness parameter α falls from 2 toward 0. The thin-tailed Gaussian bell curve has α = 2. T...

The notorious quantum measurement problem brings out the difficulty to reconcile two postulates: unitary evolution of closed systems and wave-function collapse after a measurement. This problematics is particularly highlighted in Wigner's friend thought experiment, where mismatch between leads conflicting descriptions for different observers. A recent no-go theorem has established that (quantum...

Bell's theorem shows that no local hidden-variable model can explain the measurement statistics of a quantum system shared between two parties, thus ruling out classical (local) understanding nature. In this paper we demonstrate by relaxing positivity restriction in probability distribution it is possible to derive quasiprobabilistic Bell inequalities whose sharp upper bound written terms negat...

In this paper dedicated to the memory of Walter Philipp, we formalize the rules of classical→ quantum correspondence and perform a rigorous mathematical analysis of the assumptions in Bell’s NO-GO arguments. I met Walter Philipp on many occasions — mostly during the Växjö conferences and during my visits to the University of Illinois in UrbanaChampaign — and I always enjoyed social and scientif...

Counterfactual definiteness is supposed to underlie the Bell theorem. An old controversy exists among those who reject theorem implications by rejecting counterfactual and claim that, since it a direct consequence of locality, cannot be independently rejected. We propose different approach for solving this contentious issue realizing that an unnecessary inconsistent assumption. not equivalent r...

Simulation and theoretical results show that memoryless threshold neurons benefit from small amounts of almost all types of additive noise and so produce the stochastic-resonance or SR effect. Input-output mutual information measures the performance of such threshold systems that use subthreshold signals. The SR result holds for all possible noise probability density functions with finite varia...

A comment on these notes 3 Capítulo 1. Introduction to Quantum nonlocality 5 1. Bell's result: Correlations in EPR 5 2. Tsirelson's theorem and Grothendieck's theorem 7 3. Banach space point of view 15 4. Computer science point of view: XOR games 21 Capítulo 2. Quantum nonlocality: The general case 23 5. Bell functionals and multiplayer games 23 6. Operator spaces 25 7. Description of two-playe...

Access control has been an important issue in military systems for many years and is becoming increasingly important in commercial systems. There are three important access control paradigms: the Bell-LaPadula model, the protection matrix model and the role-based access control model. Each of these models has its advantages and disadvantages. Partial orders play a significant part in the role-b...

Bell inequalities are intended to show that local realist theories cannot describe the world. A local realist theory is one where physical properties are defined prior to and independent of measurement, and no physical influence can propagate faster than the speed of light. Quantum-mechanical predictions for certain experiments violate the Bell inequality while a local realist theory cannot, an...