this research considers whenever husband's permission is necessary in islam jurisprudence. there are many traditionsabout this subject. these traditionsexpress that woman is obliged to get permission from her husband to do some religious act recommended such as fasting, pilgrimage,aitkafand other daily affairs such as leaving home, vow and so on.therefore,it is necessary to examine the imp...

Abstract Different notions of the consistency obligations collapse in standard deontic logic. In justification logics, which feature explicit reasons for obligations, situation is different. Their strength depends on a constant specification and available set operations combining different reasons. We present principles logic compare their logical strength. propose novel semantics logics with v...