one of the greatest scholars related to islamic-arabic culture is ibn-tufail whose authority in the field of philosophy of science and medicine and intellectual activities is worthy of praise .however, none of his works remained except his odes in medicine and hayy-ibn-yaghzan dissertation. the latter is the most important of his works ,containing his deep philosophical thoughts and applying fa...

In this issue of Neuron, Tufail et al. present an underlying mechanism for microglia-mediated elimination of virally transduced cells in the central nervous system. These findings could contribute to the development of improved gene therapies for various neurological disorders by exploring why microglia destroy viable cells following viral infection.

Let IBn be the set of all irreducible matrices in Bn and let SIBn be the set of all symmetric matrices in IBn. Finding an upper bound for the set of indices of matrices in IBn and SIBn and determining gaps in the set of indices of matrices in IBn and SIBn has been studied by many researchers. In this paper, we establish a best upper bound for the set of weak exponents of indecomposability of ma...