Corredores de comercio judíos en Zaragoza (1300-1425)

Universidad De Zaragoza

We study the phase diagram of the four dimensional O(4) model with first (β1) and second (β2) neighbor couplings, specially in the β2 < 0 region, where we find a line of transitions which is compatible with second order. We also compute the critical exponents on this line at the point β1 = 0 (F4 lattice) by Finite Size Scaling techniques up to a lattice size L = 24, being these exponents differ...

0 Universidad de Zaragoza “ garcia de galdeano ”

As a sequel of [4], this paper is devoted to the computation of the digital fundamental group πd 1(O/S;σ) defined by loops in the digital object O for which the digital object S acts as an “obstacle”. We prove that for arbitrary digital spaces the group πd 1(O/S;σ) maps onto the usual fundamental group of the difference of continuous analogues |AO∪S | − |AS |. Moreover, we show that this epimor...

Sur la frequence de leptospirose en Iran

Sur la fréquence de leptospirose en Iran

Existence de la brucellose en Iran. Isolement de Brucella abortus