We consider the task of weighted first-order model counting (WFOMC) used for probabilistic inference in area statistical relational learning. Given a formula φ, domain size n and pair weight functions, what is sum all models φ over n? It was shown that computing WFOMC any logical sentence with at most two variables can be done time polynomial n. However, it also #P1-complete once we add third v...

The aim of this paper is to investigate the Hyers-Ulam stability of the  linear differential equation$$y''(x)+alpha y'(x)+beta y(x)=f(x)$$in general case, where $yin C^2[a,b],$  $fin C[a,b]$ and $-infty

in this paper, we study rst order linear fuzzy dierential equations with fuzzy coecient and initial value. we use the generalized dierentiability concept and apply the exponent matrix to present the general form of their solutions. finally, one example is given to illustrate our results.