Customary marriage (nikāḥ ‘urfī)—non-official married life of a couple—is a new phenomenon increasingly spreading throughout the Arab world. Legal and social consequences of customary marriage have led many socio-jurisprudential scholars to forbid all its varieties. The strategy has, nevertheless, failed to restrain the spread of this type of marriage. In this paper, I argue that one f...

a total of 8641 married couples were investigated from 28 iranian populations for consanguineous marriages and coefficient of inbreeding. the results showed considerable differences in the rate and kind of consanguineous matings among the various urban, rural, tribal, and religious populations studied. the observed frequencies of the consanguineous matings in the populations of iran are higher ...

We use the anti-equivalence between Cohen-Macaulay complexes and coherent sheaves on formal schemes to shed light on some older results and prove new results. We bring out the relations between a coherent sheaf M satisfying an S2 condition and the lowest cohomology N of its “dual” complex. We show that if a scheme has a Gorenstein complex satisfying certain coherence conditions, then in a finit...