We consider proof systems with sequents of the form U for proving validity of a propositional modal calculus formula over a set U of states in a given model Such proof systems usually handle xed point formulae through unfolding thus allowing such formulae to reappear in a proof Tagging is a technique originated by Winskel for annotating xed point formulae with information about the proof states...

We consider a system of one-dimensional non-interacting fermions in external harmonic confinement. Using an efficient Green’s function method we evaluate the exact profiles and the pair correlation function, showing a direct signature of the Fermi statistics and of the single quantum-level occupancy. We also study the dynamical properties of the gas, obtaining the spectrum both in the collision...

A nonlinear generalization of the S-transform known in Gaussian analysis is introduced. It is deened as a nonlinear operator on topolog-ical spaces of entire functions of innnitely many variables with growth of at most second order and nite type restricted to a certain value. This nonlinear S-transform (NLST) has xed points a certain family of which is found and analyzed. In particular, their s...

Most of the existing Digital Signal Processors (DSPs) are optimized for a fast and e cient computation of the Fast Fourier Transform (FFT). However, there are only two oating-point DSPs available, which perform the butter y operation of a FFT in 4 processor cycles, but no xed-point DSP is designed that way. The new 24 bit xed-point DSP DAISY, which is able to execute the butter y in 4 cycles ev...

We describe an encoding of major parts of domain theory and xed-point theory in the Pvs extension of the simply-typed-calculus; these formaliza-tions comprise the encoding of mathematical structures like complete partial orders (domains), domain constructions, the Knaster-Tarski xed-point theorem for mono-tonic functions, and variations of xed-point induction. Altogether, these encodings form a...

Background: Although peripheral nerves show capacity for regeneration after injury to a certain extent, the extent of regeneration is not remarkable. Previous studies have suggested that through the production of growth factors or extracellular matrix components, mesenchymal stem cells may enhance nerve regeneration.Objectives: In the present study, the therapeutic potenc...

1389-1286/$ see front matter 2011 Elsevier B.V doi:10.1016/j.comnet.2011.06.012 ⇑ Corresponding author. E-mail addresses: [email protected] [email protected] (X. Pérez-Costa), seba (S. Sallent-Ribes). 1 In this paper we refer indistinctly to the set of from the work of the IEEE 802.11 group as Wi-Fi or Wi-Fi Direct is a new technology defined by the Wi-Fi Alliance in order to enable efficie...

Fixed point calculus is about the solution of recursive equations de ̨ned by a monotonic endofunction on a partially ordered set. This tutorial presents the basic theory of ̨xed point calculus together with a number of applications of direct relevance to the construction of computer programs. The tutorial also presents the theory and application of Galois connections between partially ordered se...

Three results'are presented: (1) The semi-leptonic branching ratio of the A, has been measured at SPEAR to be B(A+ -+ efx) = (4.5? 1.7)%. of T-pair production have been measuredCat PEP at fi = 29 GeV: (2) Properties orr/,QED = 0.972 0.05 + 0.06; the forward-backward asymmetry is A,, = (-3.5 t 5.0)%; inclusive branching ratios are B(T -+ 1 Prong) = (86 +4)%, B(T + 3 Prongs) = (14 ?4)%, B(-c + 5 ...

205 National Tax Journal Vol. LX, No. 2 June 2007 Abstract With many countries considering the adoption of a system of earned income tax credits, it is useful to analyze how different types of credits affect labor supply and earnings. This paper focuses on a 1999 reform to the UK tax credit system, which increased the value of the credit and reduced the phaseout rate. Using panel data, with ind...