nowadays family tkaful in islamic societies has been  studied as islamic financing tools and in detail as a legal institution based on the theory of common benefit – common loss and collective cooperation. likewise in some western countries, among the uk , family tkaful as risk financing tools has important role beside insurance in society risk  financing.  it's seems to be necessary, shia...

We give a categorical perspective on various product rules, including Brzozowski’s product rule ((st)a = sat + o(s)ta) and the familiar rule of calculus ((st)a = sat+ sta). It is already known that these product rules can be represented using distributive laws, e.g. via a suitable quotient of a GSOS law. In this paper, we cast these product rules into a general setting where we have two monads ...

the harmful effects of the long-term ocular exposure to cumulative levels of infrared radiation (ir) in glassblowing and foundries have been recognized since the late 19th century. these effects include cataracts, keratitis, and chronic dry eye problems. therefore, infrared radiation measurements are critical and need to be assessed regularly in the industries and workplaces where there are hig...

It is straightforward to show that all the non-trivial zeroes of the Riemann zeta-function ζ(s) are confined to the critical strip: 0 ≤ R(s) ≤ 1. It is another matter to seek out their precise location. Extending the work of Riemann, Gram introduced a procedure for detecting these zeroes: Gram’s Law. It is known that Gram’s Law fails infinitely often, and that a weaker formulation of Gram’s Law...